http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/json/ToJsonUDF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/json/ToJsonUDF.java 
b/core/src/main/java/hivemall/tools/json/ToJsonUDF.java
index 416d0c9..70c62b9 100644
--- a/core/src/main/java/hivemall/tools/json/ToJsonUDF.java
+++ b/core/src/main/java/hivemall/tools/json/ToJsonUDF.java
@@ -37,8 +37,7 @@ import 
org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
 import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
 import org.apache.hadoop.io.Text;
 
-@Description(
-        name = "to_json",
+@Description(name = "to_json",
         value = "_FUNC_(ANY object [, const array<string>|const string 
columnNames]) - Returns Json string")
 @UDFType(deterministic = true, stateful = false)
 public final class ToJsonUDF extends GenericUDF {
@@ -51,7 +50,8 @@ public final class ToJsonUDF extends GenericUDF {
     @Override
     public ObjectInspector initialize(ObjectInspector[] argOIs) throws 
UDFArgumentException {
         if (argOIs.length != 1 && argOIs.length != 2) {
-            throw new UDFArgumentException("from_json takes one or two 
arguments: " + argOIs.length);
+            throw new UDFArgumentException(
+                "from_json takes one or two arguments: " + argOIs.length);
         }
 
         this.objOI = argOIs[0];
@@ -81,8 +81,8 @@ public final class ToJsonUDF extends GenericUDF {
         try {
             return JsonSerdeUtils.serialize(obj, objOI, columnNames);
         } catch (Throwable e) {
-            throw new HiveException("Failed to serialize: " + obj + '\n'
-                    + ExceptionUtils.prettyPrintStackTrace(e), e);
+            throw new HiveException(
+                "Failed to serialize: " + obj + '\n' + 
ExceptionUtils.prettyPrintStackTrace(e), e);
         }
     }
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/list/UDAFToOrderedList.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/list/UDAFToOrderedList.java 
b/core/src/main/java/hivemall/tools/list/UDAFToOrderedList.java
index 37b33c4..5ef6ddb 100644
--- a/core/src/main/java/hivemall/tools/list/UDAFToOrderedList.java
+++ b/core/src/main/java/hivemall/tools/list/UDAFToOrderedList.java
@@ -66,21 +66,14 @@ import org.apache.hadoop.io.IntWritable;
 /**
  * Return list of values sorted by value itself or specific key.
  */
-@Description(
-        name = "to_ordered_list",
+@Description(name = "to_ordered_list",
         value = "_FUNC_(PRIMITIVE value [, PRIMITIVE key, const string 
options])"
                 + " - Return list of values sorted by value itself or specific 
key",
-        extended = "with t as (\n"
-                + "    select 5 as key, 'apple' as value\n"
-                + "    union all\n"
-                + "    select 3 as key, 'banana' as value\n"
-                + "    union all\n"
-                + "    select 4 as key, 'candy' as value\n"
-                + "    union all\n"
-                + "    select 2 as key, 'donut' as value\n"
-                + "    union all\n"
-                + "    select 3 as key, 'egg' as value\n"
-                + ")\n"
+        extended = "with t as (\n" + "    select 5 as key, 'apple' as value\n" 
+ "    union all\n"
+                + "    select 3 as key, 'banana' as value\n" + "    union 
all\n"
+                + "    select 4 as key, 'candy' as value\n" + "    union all\n"
+                + "    select 2 as key, 'donut' as value\n" + "    union all\n"
+                + "    select 3 as key, 'egg' as value\n" + ")\n"
                 + "select                                             -- 
expected output\n"
                 + "    to_ordered_list(value, key, '-reverse'),       -- 
[apple, candy, (banana, egg | egg, banana), donut] (reverse order)\n"
                 + "    to_ordered_list(value, key, '-k 2'),           -- 
[apple, candy] (top-k)\n"
@@ -102,7 +95,8 @@ public final class UDAFToOrderedList extends 
AbstractGenericUDAFResolver {
         @SuppressWarnings("deprecation")
         TypeInfo[] typeInfo = info.getParameters();
         ObjectInspector[] argOIs = info.getParameterObjectInspectors();
-        if ((typeInfo.length == 1) || (typeInfo.length == 2 && 
HiveUtils.isConstString(argOIs[1]))) {
+        if ((typeInfo.length == 1)
+                || (typeInfo.length == 2 && 
HiveUtils.isConstString(argOIs[1]))) {
             // sort values by value itself w/o key
             if (typeInfo[0].getCategory() != 
ObjectInspector.Category.PRIMITIVE) {
                 throw new UDFArgumentTypeException(0,
@@ -247,14 +241,17 @@ public final class UDAFToOrderedList extends 
AbstractGenericUDAFResolver {
 
                 // re-extract input value OI
                 this.valueListField = soi.getStructFieldRef("valueList");
-                StandardListObjectInspector valueListOI = 
(StandardListObjectInspector) valueListField.getFieldObjectInspector();
+                StandardListObjectInspector valueListOI =
+                        (StandardListObjectInspector) 
valueListField.getFieldObjectInspector();
                 this.valueOI = valueListOI.getListElementObjectInspector();
                 this.valueListOI = 
ObjectInspectorFactory.getStandardListObjectInspector(valueOI);
 
                 // re-extract input key OI
                 this.keyListField = soi.getStructFieldRef("keyList");
-                StandardListObjectInspector keyListOI = 
(StandardListObjectInspector) keyListField.getFieldObjectInspector();
-                this.keyOI = 
HiveUtils.asPrimitiveObjectInspector(keyListOI.getListElementObjectInspector());
+                StandardListObjectInspector keyListOI =
+                        (StandardListObjectInspector) 
keyListField.getFieldObjectInspector();
+                this.keyOI = HiveUtils.asPrimitiveObjectInspector(
+                    keyListOI.getListElementObjectInspector());
                 this.keyListOI = 
ObjectInspectorFactory.getStandardListObjectInspector(keyOI);
 
                 this.sizeField = soi.getStructFieldRef("size");
@@ -266,7 +263,8 @@ public final class UDAFToOrderedList extends 
AbstractGenericUDAFResolver {
             if (mode == Mode.PARTIAL1 || mode == Mode.PARTIAL2) {// 
terminatePartial
                 outputOI = internalMergeOI(valueOI, keyOI);
             } else {// terminate
-                outputOI = 
ObjectInspectorFactory.getStandardListObjectInspector(ObjectInspectorUtils.getStandardObjectInspector(valueOI));
+                outputOI = 
ObjectInspectorFactory.getStandardListObjectInspector(
+                    ObjectInspectorUtils.getStandardObjectInspector(valueOI));
             }
 
             return outputOI;
@@ -279,9 +277,11 @@ public final class UDAFToOrderedList extends 
AbstractGenericUDAFResolver {
             List<ObjectInspector> fieldOIs = new ArrayList<ObjectInspector>();
 
             fieldNames.add("valueList");
-            
fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(ObjectInspectorUtils.getStandardObjectInspector(valueOI)));
+            fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(
+                ObjectInspectorUtils.getStandardObjectInspector(valueOI)));
             fieldNames.add("keyList");
-            
fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(ObjectInspectorUtils.getStandardObjectInspector(keyOI)));
+            fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(
+                ObjectInspectorUtils.getStandardObjectInspector(keyOI)));
             fieldNames.add("size");
             
fieldOIs.add(PrimitiveObjectInspectorFactory.writableIntObjectInspector);
             fieldNames.add("reverseOrder");
@@ -358,15 +358,17 @@ public final class UDAFToOrderedList extends 
AbstractGenericUDAFResolver {
             }
 
             Object valueListObj = internalMergeOI.getStructFieldData(partial, 
valueListField);
-            final List<?> valueListRaw = 
valueListOI.getList(HiveUtils.castLazyBinaryObject(valueListObj));
+            final List<?> valueListRaw =
+                    
valueListOI.getList(HiveUtils.castLazyBinaryObject(valueListObj));
             final List<Object> valueList = new ArrayList<Object>();
             for (int i = 0, n = valueListRaw.size(); i < n; i++) {
-                
valueList.add(ObjectInspectorUtils.copyToStandardObject(valueListRaw.get(i),
-                    valueOI));
+                valueList.add(
+                    
ObjectInspectorUtils.copyToStandardObject(valueListRaw.get(i), valueOI));
             }
 
             Object keyListObj = internalMergeOI.getStructFieldData(partial, 
keyListField);
-            final List<?> keyListRaw = 
keyListOI.getList(HiveUtils.castLazyBinaryObject(keyListObj));
+            final List<?> keyListRaw =
+                    
keyListOI.getList(HiveUtils.castLazyBinaryObject(keyListObj));
             final List<Object> keyList = new ArrayList<Object>();
             for (int i = 0, n = keyListRaw.size(); i < n; i++) {
                 
keyList.add(ObjectInspectorUtils.copyToStandardObject(keyListRaw.get(i), 
keyOI));
@@ -376,7 +378,9 @@ public final class UDAFToOrderedList extends 
AbstractGenericUDAFResolver {
             int size = 
PrimitiveObjectInspectorFactory.writableIntObjectInspector.get(sizeObj);
 
             Object reverseOrderObj = 
internalMergeOI.getStructFieldData(partial, reverseOrderField);
-            boolean reverseOrder = 
PrimitiveObjectInspectorFactory.writableBooleanObjectInspector.get(reverseOrderObj);
+            boolean reverseOrder =
+                    
PrimitiveObjectInspectorFactory.writableBooleanObjectInspector.get(
+                        reverseOrderObj);
 
             QueueAggregationBuffer myagg = (QueueAggregationBuffer) agg;
             myagg.setOptions(size, reverseOrder);

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/map/MapTailNUDF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/map/MapTailNUDF.java 
b/core/src/main/java/hivemall/tools/map/MapTailNUDF.java
index f2da8b8..d8163f6 100644
--- a/core/src/main/java/hivemall/tools/map/MapTailNUDF.java
+++ b/core/src/main/java/hivemall/tools/map/MapTailNUDF.java
@@ -57,7 +57,8 @@ public class MapTailNUDF extends GenericUDF {
         }
         this.intObjectInspector = (IntObjectInspector) arguments[1];
 
-        ObjectInspector keyOI = 
ObjectInspectorUtils.getStandardObjectInspector(mapObjectInspector.getMapKeyObjectInspector());
+        ObjectInspector keyOI = 
ObjectInspectorUtils.getStandardObjectInspector(
+            mapObjectInspector.getMapKeyObjectInspector());
         ObjectInspector valueOI = 
mapObjectInspector.getMapValueObjectInspector();
 
         return ObjectInspectorFactory.getStandardMapObjectInspector(keyOI, 
valueOI);

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/map/UDAFToMap.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/map/UDAFToMap.java 
b/core/src/main/java/hivemall/tools/map/UDAFToMap.java
index e4d42d9..b203909 100644
--- a/core/src/main/java/hivemall/tools/map/UDAFToMap.java
+++ b/core/src/main/java/hivemall/tools/map/UDAFToMap.java
@@ -79,7 +79,8 @@ public class UDAFToMap extends AbstractGenericUDAFResolver {
                 inputValueOI = argOIs[1];
             } else {// from partial aggregation
                 internalMergeOI = (StandardMapObjectInspector) argOIs[0];
-                inputKeyOI = 
HiveUtils.asPrimitiveObjectInspector(internalMergeOI.getMapKeyObjectInspector());
+                inputKeyOI = HiveUtils.asPrimitiveObjectInspector(
+                    internalMergeOI.getMapKeyObjectInspector());
                 inputValueOI = internalMergeOI.getMapValueObjectInspector();
             }
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/map/UDAFToOrderedMap.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/map/UDAFToOrderedMap.java 
b/core/src/main/java/hivemall/tools/map/UDAFToOrderedMap.java
index ba8ef82..e58ff67 100644
--- a/core/src/main/java/hivemall/tools/map/UDAFToOrderedMap.java
+++ b/core/src/main/java/hivemall/tools/map/UDAFToOrderedMap.java
@@ -53,18 +53,12 @@ import org.apache.hadoop.io.IntWritable;
 /**
  * Convert two aggregated columns into a sorted key-value map.
  */
-@Description(
-        name = "to_ordered_map",
+@Description(name = "to_ordered_map",
         value = "_FUNC_(key, value [, const int k|const boolean 
reverseOrder=false]) "
                 + "- Convert two aggregated columns into an ordered key-value 
map",
-        extended = "with t as (\n"
-                + "    select 10 as key, 'apple' as value\n"
-                + "    union all\n"
-                + "    select 3 as key, 'banana' as value\n"
-                + "    union all\n"
-                + "    select 4 as key, 'candy' as value\n"
-                + ")\n"
-                + "select\n"
+        extended = "with t as (\n" + "    select 10 as key, 'apple' as 
value\n" + "    union all\n"
+                + "    select 3 as key, 'banana' as value\n" + "    union 
all\n"
+                + "    select 4 as key, 'candy' as value\n" + ")\n" + 
"select\n"
                 + "    to_ordered_map(key, value, true),   -- 
{10:\"apple\",4:\"candy\",3:\"banana\"} (reverse)\n"
                 + "    to_ordered_map(key, value, 1),      -- {10:\"apple\"} 
(top-1)\n"
                 + "    to_ordered_map(key, value, 2),      -- 
{10:\"apple\",4:\"candy\"} (top-2)\n"
@@ -142,8 +136,8 @@ public final class UDAFToOrderedMap extends UDAFToMap {
         @Override
         public void reset(@SuppressWarnings("deprecation") AggregationBuffer 
agg)
                 throws HiveException {
-            ((MapAggregationBuffer) agg).container = new TreeMap<Object, 
Object>(
-                Collections.reverseOrder());
+            ((MapAggregationBuffer) agg).container =
+                    new TreeMap<Object, Object>(Collections.reverseOrder());
         }
 
     }
@@ -175,8 +169,10 @@ public final class UDAFToOrderedMap extends UDAFToMap {
 
                 this.partialMapField = soi.getStructFieldRef("partialMap");
                 // re-extract input key/value OIs
-                MapObjectInspector partialMapOI = (MapObjectInspector) 
partialMapField.getFieldObjectInspector();
-                this.inputKeyOI = 
HiveUtils.asPrimitiveObjectInspector(partialMapOI.getMapKeyObjectInspector());
+                MapObjectInspector partialMapOI =
+                        (MapObjectInspector) 
partialMapField.getFieldObjectInspector();
+                this.inputKeyOI = HiveUtils.asPrimitiveObjectInspector(
+                    partialMapOI.getMapKeyObjectInspector());
                 this.inputValueOI = partialMapOI.getMapValueObjectInspector();
 
                 this.partialMapOI = 
ObjectInspectorFactory.getStandardMapObjectInspector(
@@ -289,7 +285,8 @@ public final class UDAFToOrderedMap extends UDAFToMap {
             MapAggregationBuffer myagg = (MapAggregationBuffer) agg;
 
             Object partialMapObj = internalMergeOI.getStructFieldData(partial, 
partialMapField);
-            Map<?, ?> partialMap = 
partialMapOI.getMap(HiveUtils.castLazyBinaryObject(partialMapObj));
+            Map<?, ?> partialMap =
+                    
partialMapOI.getMap(HiveUtils.castLazyBinaryObject(partialMapObj));
             if (partialMap == null) {
                 return;
             }
@@ -301,7 +298,8 @@ public final class UDAFToOrderedMap extends UDAFToMap {
             }
             for (Map.Entry<?, ?> e : partialMap.entrySet()) {
                 Object key = 
ObjectInspectorUtils.copyToStandardObject(e.getKey(), inputKeyOI);
-                Object value = 
ObjectInspectorUtils.copyToStandardObject(e.getValue(), inputValueOI);
+                Object value =
+                        
ObjectInspectorUtils.copyToStandardObject(e.getValue(), inputValueOI);
                 myagg.container.put(key, value);
             }
         }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/mapred/DistributedCacheLookupUDF.java
----------------------------------------------------------------------
diff --git 
a/core/src/main/java/hivemall/tools/mapred/DistributedCacheLookupUDF.java 
b/core/src/main/java/hivemall/tools/mapred/DistributedCacheLookupUDF.java
index 2794476..62d0549 100644
--- a/core/src/main/java/hivemall/tools/mapred/DistributedCacheLookupUDF.java
+++ b/core/src/main/java/hivemall/tools/mapred/DistributedCacheLookupUDF.java
@@ -51,8 +51,7 @@ import 
org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector;
 import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoUtils;
 import org.apache.hadoop.io.Text;
 
-@Description(
-        name = "distcache_gets",
+@Description(name = "distcache_gets",
         value = "_FUNC_(filepath, key, default_value [, parseKey]) - Returns 
map<key_type, value_type>|value_type")
 @UDFType(deterministic = false, stateful = false)
 public final class DistributedCacheLookupUDF extends GenericUDF {
@@ -77,9 +76,8 @@ public final class DistributedCacheLookupUDF extends 
GenericUDF {
                         + argOIs.length + getUsage());
         }
         if (!ObjectInspectorUtils.isConstantObjectInspector(argOIs[2])) {
-            throw new UDFArgumentException(
-                "Third argument DEFAULT_VALUE must be a constant value: "
-                        + 
TypeInfoUtils.getTypeInfoFromObjectInspector(argOIs[2]));
+            throw new UDFArgumentException("Third argument DEFAULT_VALUE must 
be a constant value: "
+                    + TypeInfoUtils.getTypeInfoFromObjectInspector(argOIs[2]));
         }
         if (argOIs.length == 4) {
             this.parseKey = HiveUtils.getConstBoolean(argOIs[3]);
@@ -126,8 +124,8 @@ public final class DistributedCacheLookupUDF extends 
GenericUDF {
                 "parseKey=true is only available for string typed key(s)");
         }
 
-        final Object2ObjectMap<Object, Object> map = new 
Object2ObjectOpenHashMap<Object, Object>(
-            8192);
+        final Object2ObjectMap<Object, Object> map =
+                new Object2ObjectOpenHashMap<Object, Object>(8192);
         try {
             loadValues(map, new File(filepath), keyInputOI, valueInputOI);
             this.cache = map;
@@ -141,8 +139,8 @@ public final class DistributedCacheLookupUDF extends 
GenericUDF {
     }
 
     private static void loadValues(Object2ObjectMap<Object, Object> map, File 
file,
-            PrimitiveObjectInspector keyOI, PrimitiveObjectInspector valueOI) 
throws IOException,
-            SerDeException {
+            PrimitiveObjectInspector keyOI, PrimitiveObjectInspector valueOI)
+            throws IOException, SerDeException {
         if (!file.exists()) {
             return;
         }
@@ -156,8 +154,10 @@ public final class DistributedCacheLookupUDF extends 
GenericUDF {
                 StructObjectInspector lineOI = (StructObjectInspector) 
serde.getObjectInspector();
                 StructField keyRef = lineOI.getStructFieldRef("key");
                 StructField valueRef = lineOI.getStructFieldRef("value");
-                PrimitiveObjectInspector keyRefOI = (PrimitiveObjectInspector) 
keyRef.getFieldObjectInspector();
-                PrimitiveObjectInspector valueRefOI = 
(PrimitiveObjectInspector) valueRef.getFieldObjectInspector();
+                PrimitiveObjectInspector keyRefOI =
+                        (PrimitiveObjectInspector) 
keyRef.getFieldObjectInspector();
+                PrimitiveObjectInspector valueRefOI =
+                        (PrimitiveObjectInspector) 
valueRef.getFieldObjectInspector();
 
                 BufferedReader reader = null;
                 try {

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/mapred/RowNumberUDF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/mapred/RowNumberUDF.java 
b/core/src/main/java/hivemall/tools/mapred/RowNumberUDF.java
index 59f64ba..3c92e30 100644
--- a/core/src/main/java/hivemall/tools/mapred/RowNumberUDF.java
+++ b/core/src/main/java/hivemall/tools/mapred/RowNumberUDF.java
@@ -49,8 +49,8 @@ public final class RowNumberUDF extends UDF {
         if (taskId == -1) {
             this.taskId = HadoopUtils.getTaskId() + 1;
             if (taskId > 9999) {
-                throw new HiveException("TaskId out of range `" + taskId
-                        + "`. rownum() supports 9999 tasks at max");
+                throw new HiveException(
+                    "TaskId out of range `" + taskId + "`. rownum() supports 
9999 tasks at max");
             }
         }
         sequence++;

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/math/L2NormUDAF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/math/L2NormUDAF.java 
b/core/src/main/java/hivemall/tools/math/L2NormUDAF.java
index dda47fa..921272a 100644
--- a/core/src/main/java/hivemall/tools/math/L2NormUDAF.java
+++ b/core/src/main/java/hivemall/tools/math/L2NormUDAF.java
@@ -25,8 +25,7 @@ import org.apache.hadoop.hive.ql.metadata.HiveException;
 import org.apache.hadoop.hive.serde2.io.DoubleWritable;
 
 @SuppressWarnings("deprecation")
-@Description(
-        name = "l2_norm",
+@Description(name = "l2_norm",
         value = "_FUNC_(double xi) - Return L2 norm of a vector which has the 
given values in each dimension")
 public final class L2NormUDAF extends UDAF {
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/matrix/TransposeAndDotUDAF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/matrix/TransposeAndDotUDAF.java 
b/core/src/main/java/hivemall/tools/matrix/TransposeAndDotUDAF.java
index 440bbe6..d04ddc1 100644
--- a/core/src/main/java/hivemall/tools/matrix/TransposeAndDotUDAF.java
+++ b/core/src/main/java/hivemall/tools/matrix/TransposeAndDotUDAF.java
@@ -44,8 +44,7 @@ import 
org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector;
 import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.DoubleObjectInspector;
 import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
 
-@Description(
-        name = "transpose_and_dot",
+@Description(name = "transpose_and_dot",
         value = "_FUNC_(array<number> matrix0_row, array<number> matrix1_row)"
                 + " - Returns dot(matrix0.T, matrix1) as array<array<double>>, 
shape = (matrix0.#cols, matrix1.#cols)")
 public final class TransposeAndDotUDAF extends AbstractGenericUDAFResolver {
@@ -118,16 +117,22 @@ public final class TransposeAndDotUDAF extends 
AbstractGenericUDAFResolver {
 
             if (mode == Mode.PARTIAL1 || mode == Mode.COMPLETE) {
                 this.matrix0RowOI = HiveUtils.asListOI(OIs[0]);
-                this.matrix0ElOI = 
HiveUtils.asDoubleCompatibleOI(matrix0RowOI.getListElementObjectInspector());
+                this.matrix0ElOI = HiveUtils.asDoubleCompatibleOI(
+                    matrix0RowOI.getListElementObjectInspector());
                 this.matrix1RowOI = HiveUtils.asListOI(OIs[1]);
-                this.matrix1ElOI = 
HiveUtils.asDoubleCompatibleOI(matrix1RowOI.getListElementObjectInspector());
+                this.matrix1ElOI = HiveUtils.asDoubleCompatibleOI(
+                    matrix1RowOI.getListElementObjectInspector());
             } else {
                 this.aggMatrixOI = HiveUtils.asListOI(OIs[0]);
-                this.aggMatrixRowOI = 
HiveUtils.asListOI(aggMatrixOI.getListElementObjectInspector());
-                this.aggMatrixElOI = 
HiveUtils.asDoubleOI(aggMatrixRowOI.getListElementObjectInspector());
+                this.aggMatrixRowOI =
+                        
HiveUtils.asListOI(aggMatrixOI.getListElementObjectInspector());
+                this.aggMatrixElOI =
+                        
HiveUtils.asDoubleOI(aggMatrixRowOI.getListElementObjectInspector());
             }
 
-            return 
ObjectInspectorFactory.getStandardListObjectInspector(ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector));
+            return ObjectInspectorFactory.getStandardListObjectInspector(
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector));
         }
 
         @Override

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/text/NormalizeUnicodeUDF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/text/NormalizeUnicodeUDF.java 
b/core/src/main/java/hivemall/tools/text/NormalizeUnicodeUDF.java
index 0908e44..aefb4e2 100644
--- a/core/src/main/java/hivemall/tools/text/NormalizeUnicodeUDF.java
+++ b/core/src/main/java/hivemall/tools/text/NormalizeUnicodeUDF.java
@@ -26,8 +26,7 @@ import org.apache.hadoop.hive.ql.exec.Description;
 import org.apache.hadoop.hive.ql.exec.UDF;
 import org.apache.hadoop.hive.ql.udf.UDFType;
 
-@Description(
-        name = "normalize_unicode",
+@Description(name = "normalize_unicode",
         value = "_FUNC_(string str [, string form]) - Transforms `str` with 
the specified normalization form. "
                 + "The `form` takes one of NFC (default), NFD, NFKC, or NFKD",
         extended = "select normalize_unicode('ハンカクカナ','NFKC');\n" 
+ "> ハンカクカナ\n" + "\n"

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/text/SingularizeUDF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/text/SingularizeUDF.java 
b/core/src/main/java/hivemall/tools/text/SingularizeUDF.java
index 3d217e0..73d2d63 100644
--- a/core/src/main/java/hivemall/tools/text/SingularizeUDF.java
+++ b/core/src/main/java/hivemall/tools/text/SingularizeUDF.java
@@ -49,8 +49,8 @@ public final class SingularizeUDF extends UDF {
     private static final String[] prepositions = new String[] {"about", 
"above", "across", "after",
             "among", "around", "at", "athwart", "before", "behind", "below", 
"beneath", "beside",
             "besides", "between", "betwixt", "beyond", "but", "by", "during", 
"except", "for",
-            "from", "in", "into", "near", "of", "off", "on", "onto", "out", 
"over", "since",
-            "till", "to", "under", "until", "unto", "upon", "with"};
+            "from", "in", "into", "near", "of", "off", "on", "onto", "out", 
"over", "since", "till",
+            "to", "under", "until", "unto", "upon", "with"};
     // uninfected or uncountable words
     private static final String[] unchanged = new String[] {"advice", "bison", 
"bread", "bream",
             "breeches", "britches", "butter", "carp", "chassis", "cheese", 
"christmas", "clippers",

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/text/SplitWordsUDF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/text/SplitWordsUDF.java 
b/core/src/main/java/hivemall/tools/text/SplitWordsUDF.java
index e015021..0b10c2f 100644
--- a/core/src/main/java/hivemall/tools/text/SplitWordsUDF.java
+++ b/core/src/main/java/hivemall/tools/text/SplitWordsUDF.java
@@ -27,8 +27,7 @@ import org.apache.hadoop.hive.ql.exec.UDF;
 import org.apache.hadoop.hive.ql.udf.UDFType;
 import org.apache.hadoop.io.Text;
 
-@Description(
-        name = "split_words",
+@Description(name = "split_words",
         value = "_FUNC_(string query [, string regex]) - Returns an 
array<text> containing split strings")
 @UDFType(deterministic = true, stateful = false)
 public final class SplitWordsUDF extends UDF {

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/text/StopwordUDF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/text/StopwordUDF.java 
b/core/src/main/java/hivemall/tools/text/StopwordUDF.java
index 9d68de1..63babe2 100644
--- a/core/src/main/java/hivemall/tools/text/StopwordUDF.java
+++ b/core/src/main/java/hivemall/tools/text/StopwordUDF.java
@@ -39,14 +39,14 @@ public final class StopwordUDF extends UDF {
                 "she", "her", "hers", "herself", "it", "its", "itself", 
"they", "them", "their",
                 "theirs", "themselves", "what", "which", "who", "whom", 
"this", "that", "these",
                 "those", "am", "is", "are", "was", "were", "be", "been", 
"being", "have", "has",
-                "had", "having", "do", "does", "did", "doing", "a", "an", 
"the", "and", "but",
-                "if", "or", "because", "as", "until", "while", "of", "at", 
"by", "for", "with",
-                "about", "against", "between", "into", "through", "during", 
"before", "after",
-                "above", "below", "to", "from", "up", "down", "in", "out", 
"on", "off", "over",
-                "under", "again", "further", "then", "once", "here", "there", 
"when", "where",
-                "why", "how", "all", "any", "both", "each", "few", "more", 
"most", "other", "some",
-                "such", "no", "nor", "not", "only", "own", "same", "so", 
"than", "too", "very",
-                "s", "t", "can", "will", "just", "don", "should", "now"};
+                "had", "having", "do", "does", "did", "doing", "a", "an", 
"the", "and", "but", "if",
+                "or", "because", "as", "until", "while", "of", "at", "by", 
"for", "with", "about",
+                "against", "between", "into", "through", "during", "before", 
"after", "above",
+                "below", "to", "from", "up", "down", "in", "out", "on", "off", 
"over", "under",
+                "again", "further", "then", "once", "here", "there", "when", 
"where", "why", "how",
+                "all", "any", "both", "each", "few", "more", "most", "other", 
"some", "such", "no",
+                "nor", "not", "only", "own", "same", "so", "than", "too", 
"very", "s", "t", "can",
+                "will", "just", "don", "should", "now"};
         Arrays.sort(stopwords);
     }
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/text/WordNgramsUDF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/text/WordNgramsUDF.java 
b/core/src/main/java/hivemall/tools/text/WordNgramsUDF.java
index db3435a..fa8308b 100644
--- a/core/src/main/java/hivemall/tools/text/WordNgramsUDF.java
+++ b/core/src/main/java/hivemall/tools/text/WordNgramsUDF.java
@@ -34,12 +34,10 @@ import javax.annotation.Nullable;
 import java.util.ArrayList;
 import java.util.List;
 
-@Description(
-        name = "word_ngrams",
+@Description(name = "word_ngrams",
         value = "_FUNC_(array<string> words, int minSize, int maxSize])"
                 + " - Returns list of n-grams for given words, where `minSize 
<= n <= maxSize`",
-        extended = "select word_ngrams(tokenize('Machine learning is fun!', 
true), 1, 2);\n"
-                + "\n"
+        extended = "select word_ngrams(tokenize('Machine learning is fun!', 
true), 1, 2);\n" + "\n"
                 + "> [\"machine\",\"machine learning\",\"learning\",\"learning 
is\",\"is\",\"is fun\",\"fun\"]")
 @UDFType(deterministic = true, stateful = false)
 public final class WordNgramsUDF extends UDF {
@@ -54,8 +52,8 @@ public final class WordNgramsUDF extends UDF {
             throw new UDFArgumentException("`minSize` must be greater than 
zero: " + minSize);
         }
         if (minSize > maxSize) {
-            throw new UDFArgumentException("`maxSize` must be greater than or 
equal to `minSize`: "
-                    + maxSize);
+            throw new UDFArgumentException(
+                "`maxSize` must be greater than or equal to `minSize`: " + 
maxSize);
         }
         return getNgrams(words, minSize, maxSize);
     }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/vector/VectorAddUDF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/vector/VectorAddUDF.java 
b/core/src/main/java/hivemall/tools/vector/VectorAddUDF.java
index ecff2f4..8442ae3 100644
--- a/core/src/main/java/hivemall/tools/vector/VectorAddUDF.java
+++ b/core/src/main/java/hivemall/tools/vector/VectorAddUDF.java
@@ -63,10 +63,12 @@ public final class VectorAddUDF extends GenericUDF {
 
         if (HiveUtils.isIntegerOI(xElemOI) && HiveUtils.isIntegerOI(yElemOI)) {
             this.floatingPoints = false;
-            return 
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaLongObjectInspector);
+            return ObjectInspectorFactory.getStandardListObjectInspector(
+                PrimitiveObjectInspectorFactory.javaLongObjectInspector);
         } else {
             this.floatingPoints = true;
-            return 
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaDoubleObjectInspector);
+            return ObjectInspectorFactory.getStandardListObjectInspector(
+                PrimitiveObjectInspectorFactory.javaDoubleObjectInspector);
         }
     }
 
@@ -82,8 +84,8 @@ public final class VectorAddUDF extends GenericUDF {
         final int xLen = xOI.getListLength(arg0);
         final int yLen = yOI.getListLength(arg1);
         if (xLen != yLen) {
-            throw new HiveException("vector lengths do not match. x=" + 
xOI.getList(arg0) + ", y="
-                    + yOI.getList(arg1));
+            throw new HiveException(
+                "vector lengths do not match. x=" + xOI.getList(arg0) + ", y=" 
+ yOI.getList(arg1));
         }
 
         if (floatingPoints) {

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/tools/vector/VectorDotUDF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/vector/VectorDotUDF.java 
b/core/src/main/java/hivemall/tools/vector/VectorDotUDF.java
index 15568f5..2aa3c03 100644
--- a/core/src/main/java/hivemall/tools/vector/VectorDotUDF.java
+++ b/core/src/main/java/hivemall/tools/vector/VectorDotUDF.java
@@ -57,8 +57,8 @@ public final class VectorDotUDF extends GenericUDF {
 
         ObjectInspector argOI0 = argOIs[0];
         if (!HiveUtils.isNumberListOI(argOI0)) {
-            throw new UDFArgumentException("Expected array<number> for the 
first argument: "
-                    + argOI0.getTypeName());
+            throw new UDFArgumentException(
+                "Expected array<number> for the first argument: " + 
argOI0.getTypeName());
         }
         ListObjectInspector xListOI = HiveUtils.asListOI(argOI0);
 
@@ -72,7 +72,8 @@ public final class VectorDotUDF extends GenericUDF {
                 "Expected array<number> or number for the send argument: " + 
argOI1.getTypeName());
         }
 
-        return 
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaDoubleObjectInspector);
+        return ObjectInspectorFactory.getStandardListObjectInspector(
+            PrimitiveObjectInspectorFactory.javaDoubleObjectInspector);
     }
 
     @Override

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/topicmodel/IncrementalPLSAModel.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/topicmodel/IncrementalPLSAModel.java 
b/core/src/main/java/hivemall/topicmodel/IncrementalPLSAModel.java
index 6419664..7a95539 100644
--- a/core/src/main/java/hivemall/topicmodel/IncrementalPLSAModel.java
+++ b/core/src/main/java/hivemall/topicmodel/IncrementalPLSAModel.java
@@ -228,9 +228,8 @@ public final class IncrementalPLSAModel extends 
AbstractProbabilisticTopicModel
                 }
 
                 if (p_dw == 0.d) {
-                    throw new IllegalStateException(
-                        "Perplexity would be Infinity. "
-                                + "Try different mini-batch size `-s`, larger 
`-delta` and/or larger `-alpha`.");
+                    throw new IllegalStateException("Perplexity would be 
Infinity. "
+                            + "Try different mini-batch size `-s`, larger 
`-delta` and/or larger `-alpha`.");
                 }
                 numer += w_value * Math.log(p_dw);
                 denom += w_value;
@@ -242,8 +241,8 @@ public final class IncrementalPLSAModel extends 
AbstractProbabilisticTopicModel
 
     @Nonnull
     protected SortedMap<Float, List<String>> getTopicWords(@Nonnegative final 
int z) {
-        final SortedMap<Float, List<String>> res = new TreeMap<Float, 
List<String>>(
-            Collections.reverseOrder());
+        final SortedMap<Float, List<String>> res =
+                new TreeMap<Float, List<String>>(Collections.reverseOrder());
 
         for (Map.Entry<String, float[]> e : _p_zw.entrySet()) {
             final String w = e.getKey();
@@ -271,7 +270,8 @@ public final class IncrementalPLSAModel extends 
AbstractProbabilisticTopicModel
         return _p_zw.get(w)[z];
     }
 
-    protected void setWordScore(@Nonnull final String w, @Nonnegative final 
int z, final float prob) {
+    protected void setWordScore(@Nonnull final String w, @Nonnegative final 
int z,
+            final float prob) {
         float[] prob_label = _p_zw.get(w);
         if (prob_label == null) {
             prob_label = newRandomFloatArray(_K, _rnd);

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/topicmodel/LDAPredictUDAF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/topicmodel/LDAPredictUDAF.java 
b/core/src/main/java/hivemall/topicmodel/LDAPredictUDAF.java
index 68c802f..2befec1 100644
--- a/core/src/main/java/hivemall/topicmodel/LDAPredictUDAF.java
+++ b/core/src/main/java/hivemall/topicmodel/LDAPredictUDAF.java
@@ -74,7 +74,8 @@ public final class LDAPredictUDAF extends 
AbstractGenericUDAFResolver {
 
         if (!HiveUtils.isStringTypeInfo(typeInfo[0])) {
             throw new UDFArgumentTypeException(0,
-                "String type is expected for the first argument word: " + 
typeInfo[0].getTypeName());
+                "String type is expected for the first argument word: "
+                        + typeInfo[0].getTypeName());
         }
         if (!HiveUtils.isNumberTypeInfo(typeInfo[1])) {
             throw new UDFArgumentTypeException(1,
@@ -179,16 +180,16 @@ public final class LDAPredictUDAF extends 
AbstractGenericUDAFResolver {
                 String rawArgs = HiveUtils.getConstString(argOIs[4]);
                 cl = parseOptions(rawArgs);
 
-                this.topics = Primitives.parseInt(cl.getOptionValue("topics"),
-                    LDAUDTF.DEFAULT_TOPICS);
+                this.topics =
+                        Primitives.parseInt(cl.getOptionValue("topics"), 
LDAUDTF.DEFAULT_TOPICS);
                 if (topics < 1) {
                     throw new UDFArgumentException(
                         "A positive integer MUST be set to an option 
`-topics`: " + topics);
                 }
 
                 this.alpha = Primitives.parseFloat(cl.getOptionValue("alpha"), 
1.f / topics);
-                this.delta = Primitives.parseDouble(cl.getOptionValue("delta"),
-                    LDAUDTF.DEFAULT_DELTA);
+                this.delta =
+                        Primitives.parseDouble(cl.getOptionValue("delta"), 
LDAUDTF.DEFAULT_DELTA);
             } else {
                 this.topics = LDAUDTF.DEFAULT_TOPICS;
                 this.alpha = 1.f / topics;
@@ -221,8 +222,10 @@ public final class LDAPredictUDAF extends 
AbstractGenericUDAFResolver {
                 this.wcListElemOI = 
PrimitiveObjectInspectorFactory.javaStringObjectInspector;
                 this.wcListOI = 
ObjectInspectorFactory.getStandardListObjectInspector(wcListElemOI);
                 this.lambdaMapKeyOI = 
PrimitiveObjectInspectorFactory.javaStringObjectInspector;
-                this.lambdaMapValueElemOI = 
PrimitiveObjectInspectorFactory.javaStringObjectInspector;
-                this.lambdaMapValueOI = 
ObjectInspectorFactory.getStandardListObjectInspector(lambdaMapValueElemOI);
+                this.lambdaMapValueElemOI =
+                        
PrimitiveObjectInspectorFactory.javaStringObjectInspector;
+                this.lambdaMapValueOI =
+                        
ObjectInspectorFactory.getStandardListObjectInspector(lambdaMapValueElemOI);
                 this.lambdaMapOI = 
ObjectInspectorFactory.getStandardMapObjectInspector(
                     lambdaMapKeyOI, lambdaMapValueOI);
             }
@@ -239,8 +242,8 @@ public final class LDAPredictUDAF extends 
AbstractGenericUDAFResolver {
                 fieldNames.add("probability");
                 
fieldOIs.add(PrimitiveObjectInspectorFactory.writableFloatObjectInspector);
 
-                outputOI = 
ObjectInspectorFactory.getStandardListObjectInspector(ObjectInspectorFactory.getStandardStructObjectInspector(
-                    fieldNames, fieldOIs));
+                outputOI = 
ObjectInspectorFactory.getStandardListObjectInspector(
+                    
ObjectInspectorFactory.getStandardStructObjectInspector(fieldNames, fieldOIs));
             }
             return outputOI;
         }
@@ -250,12 +253,14 @@ public final class LDAPredictUDAF extends 
AbstractGenericUDAFResolver {
             ArrayList<ObjectInspector> fieldOIs = new 
ArrayList<ObjectInspector>();
 
             fieldNames.add("wcList");
-            
fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector));
+            fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(
+                PrimitiveObjectInspectorFactory.javaStringObjectInspector));
 
             fieldNames.add("lambdaMap");
             fieldOIs.add(ObjectInspectorFactory.getStandardMapObjectInspector(
                 PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaFloatObjectInspector)));
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.javaFloatObjectInspector)));
 
             fieldNames.add("topics");
             
fieldOIs.add(PrimitiveObjectInspectorFactory.writableIntObjectInspector);
@@ -340,7 +345,8 @@ public final class LDAPredictUDAF extends 
AbstractGenericUDAFResolver {
             }
 
             Object lambdaMapObj = internalMergeOI.getStructFieldData(partial, 
lambdaMapField);
-            Map<?, ?> lambdaMapRaw = 
lambdaMapOI.getMap(HiveUtils.castLazyBinaryObject(lambdaMapObj));
+            Map<?, ?> lambdaMapRaw =
+                    
lambdaMapOI.getMap(HiveUtils.castLazyBinaryObject(lambdaMapObj));
 
             Map<String, List<Float>> lambdaMap = new HashMap<String, 
List<Float>>();
             for (Map.Entry<?, ?> e : lambdaMapRaw.entrySet()) {
@@ -348,14 +354,15 @@ public final class LDAPredictUDAF extends 
AbstractGenericUDAFResolver {
                 String word = 
PrimitiveObjectInspectorUtils.getString(e.getKey(), lambdaMapKeyOI);
 
                 Object lambdaMapValueObj = e.getValue();
-                List<?> lambdaMapValueRaw = 
lambdaMapValueOI.getList(HiveUtils.castLazyBinaryObject(lambdaMapValueObj));
+                List<?> lambdaMapValueRaw =
+                        
lambdaMapValueOI.getList(HiveUtils.castLazyBinaryObject(lambdaMapValueObj));
 
                 // fix map values to lists of Java Float objects
                 int lambdaMapValueSize = lambdaMapValueRaw.size();
                 List<Float> lambda_word = new ArrayList<Float>();
                 for (int i = 0; i < lambdaMapValueSize; i++) {
-                    
lambda_word.add(HiveUtils.getFloat(lambdaMapValueRaw.get(i),
-                        lambdaMapValueElemOI));
+                    lambda_word.add(
+                        HiveUtils.getFloat(lambdaMapValueRaw.get(i), 
lambdaMapValueElemOI));
                 }
 
                 lambdaMap.put(word, lambda_word);
@@ -369,7 +376,8 @@ public final class LDAPredictUDAF extends 
AbstractGenericUDAFResolver {
             this.alpha = 
PrimitiveObjectInspectorFactory.writableFloatObjectInspector.get(alphaObj);
 
             Object deltaObj = internalMergeOI.getStructFieldData(partial, 
deltaOptionField);
-            this.delta = 
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector.get(deltaObj);
+            this.delta =
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector.get(deltaObj);
 
             OnlineLDAPredictAggregationBuffer myAggr = 
(OnlineLDAPredictAggregationBuffer) agg;
             myAggr.setOptions(topics, alpha, delta);
@@ -382,8 +390,8 @@ public final class LDAPredictUDAF extends 
AbstractGenericUDAFResolver {
             OnlineLDAPredictAggregationBuffer myAggr = 
(OnlineLDAPredictAggregationBuffer) agg;
             float[] topicDistr = myAggr.get();
 
-            SortedMap<Float, Integer> sortedDistr = new TreeMap<Float, 
Integer>(
-                Collections.reverseOrder());
+            SortedMap<Float, Integer> sortedDistr =
+                    new TreeMap<Float, Integer>(Collections.reverseOrder());
             for (int i = 0; i < topicDistr.length; i++) {
                 sortedDistr.put(topicDistr[i], i);
             }
@@ -400,8 +408,8 @@ public final class LDAPredictUDAF extends 
AbstractGenericUDAFResolver {
 
     }
 
-    public static class OnlineLDAPredictAggregationBuffer extends
-            GenericUDAFEvaluator.AbstractAggregationBuffer {
+    public static class OnlineLDAPredictAggregationBuffer
+            extends GenericUDAFEvaluator.AbstractAggregationBuffer {
 
         private List<String> wcList;
         private Map<String, List<Float>> lambdaMap;

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/topicmodel/LDAUDTF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/topicmodel/LDAUDTF.java 
b/core/src/main/java/hivemall/topicmodel/LDAUDTF.java
index 9bac908..4cbd964 100644
--- a/core/src/main/java/hivemall/topicmodel/LDAUDTF.java
+++ b/core/src/main/java/hivemall/topicmodel/LDAUDTF.java
@@ -59,7 +59,8 @@ public final class LDAUDTF extends 
ProbabilisticTopicModelBaseUDTF {
         opts.addOption("d", "num_docs", true, "The total number of documents 
[default: auto]");
         opts.addOption("tau", "tau0", true,
             "The parameter which downweights early iterations [default: 
64.0]");
-        opts.addOption("kappa", true, "Exponential decay rate (i.e., learning 
rate) [default: 0.7]");
+        opts.addOption("kappa", true,
+            "Exponential decay rate (i.e., learning rate) [default: 0.7]");
         opts.addOption("delta", true, "Check convergence in the expectation 
step [default: 1E-3]");
         return opts;
     }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/topicmodel/OnlineLDAModel.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/topicmodel/OnlineLDAModel.java 
b/core/src/main/java/hivemall/topicmodel/OnlineLDAModel.java
index 14b6ef4..aed17ba 100644
--- a/core/src/main/java/hivemall/topicmodel/OnlineLDAModel.java
+++ b/core/src/main/java/hivemall/topicmodel/OnlineLDAModel.java
@@ -332,8 +332,8 @@ public final class OnlineLDAModel extends 
AbstractProbabilisticTopicModel {
             }
 
             for (int k = 0; k < _K; k++) {
-                lambda_label[k] = (float) ((1.d - _rhot) * lambda_label[k] + 
_rhot
-                        * lambdaTilde_label[k]);
+                lambda_label[k] =
+                        (float) ((1.d - _rhot) * lambda_label[k] + _rhot * 
lambdaTilde_label[k]);
             }
         }
     }
@@ -444,8 +444,8 @@ public final class OnlineLDAModel extends 
AbstractProbabilisticTopicModel {
             throw new IllegalArgumentException("Word `" + label + "` is not in 
the corpus.");
         }
         if (k >= lambda_label.length) {
-            throw new IllegalArgumentException("Topic index must be in [0, "
-                    + _lambda.get(label).length + "]");
+            throw new IllegalArgumentException(
+                "Topic index must be in [0, " + _lambda.get(label).length + 
"]");
         }
         return lambda_label[k];
     }
@@ -469,8 +469,8 @@ public final class OnlineLDAModel extends 
AbstractProbabilisticTopicModel {
     public SortedMap<Float, List<String>> getTopicWords(@Nonnegative final int 
k,
             @Nonnegative int topN) {
         double lambdaSum = 0.d;
-        final SortedMap<Float, List<String>> sortedLambda = new TreeMap<Float, 
List<String>>(
-            Collections.reverseOrder());
+        final SortedMap<Float, List<String>> sortedLambda =
+                new TreeMap<Float, List<String>>(Collections.reverseOrder());
 
         for (Map.Entry<String, float[]> e : _lambda.entrySet()) {
             final float lambda_k = e.getValue()[k];
@@ -484,8 +484,8 @@ public final class OnlineLDAModel extends 
AbstractProbabilisticTopicModel {
             labels.add(e.getKey());
         }
 
-        final SortedMap<Float, List<String>> ret = new TreeMap<Float, 
List<String>>(
-            Collections.reverseOrder());
+        final SortedMap<Float, List<String>> ret =
+                new TreeMap<Float, List<String>>(Collections.reverseOrder());
 
         topN = Math.min(topN, _lambda.keySet().size());
         int tt = 0;

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/topicmodel/PLSAPredictUDAF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/topicmodel/PLSAPredictUDAF.java 
b/core/src/main/java/hivemall/topicmodel/PLSAPredictUDAF.java
index 6210359..d9df347 100644
--- a/core/src/main/java/hivemall/topicmodel/PLSAPredictUDAF.java
+++ b/core/src/main/java/hivemall/topicmodel/PLSAPredictUDAF.java
@@ -75,7 +75,8 @@ public final class PLSAPredictUDAF extends 
AbstractGenericUDAFResolver {
 
         if (!HiveUtils.isStringTypeInfo(typeInfo[0])) {
             throw new UDFArgumentTypeException(0,
-                "String type is expected for the first argument word: " + 
typeInfo[0].getTypeName());
+                "String type is expected for the first argument word: "
+                        + typeInfo[0].getTypeName());
         }
         if (!HiveUtils.isNumberTypeInfo(typeInfo[1])) {
             throw new UDFArgumentTypeException(1,
@@ -89,7 +90,8 @@ public final class PLSAPredictUDAF extends 
AbstractGenericUDAFResolver {
         }
         if (!HiveUtils.isNumberTypeInfo(typeInfo[3])) {
             throw new UDFArgumentTypeException(3,
-                "Number type is expected for the forth argument prob: " + 
typeInfo[3].getTypeName());
+                "Number type is expected for the forth argument prob: "
+                        + typeInfo[3].getTypeName());
         }
 
         if (typeInfo.length == 5) {
@@ -180,17 +182,17 @@ public final class PLSAPredictUDAF extends 
AbstractGenericUDAFResolver {
                 String rawArgs = HiveUtils.getConstString(argOIs[4]);
                 cl = parseOptions(rawArgs);
 
-                this.topics = Primitives.parseInt(cl.getOptionValue("topics"),
-                    PLSAUDTF.DEFAULT_TOPICS);
+                this.topics =
+                        Primitives.parseInt(cl.getOptionValue("topics"), 
PLSAUDTF.DEFAULT_TOPICS);
                 if (topics < 1) {
                     throw new UDFArgumentException(
                         "A positive integer MUST be set to an option 
`-topics`: " + topics);
                 }
 
-                this.alpha = Primitives.parseFloat(cl.getOptionValue("alpha"),
-                    PLSAUDTF.DEFAULT_ALPHA);
-                this.delta = Primitives.parseDouble(cl.getOptionValue("delta"),
-                    PLSAUDTF.DEFAULT_DELTA);
+                this.alpha =
+                        Primitives.parseFloat(cl.getOptionValue("alpha"), 
PLSAUDTF.DEFAULT_ALPHA);
+                this.delta =
+                        Primitives.parseDouble(cl.getOptionValue("delta"), 
PLSAUDTF.DEFAULT_DELTA);
             } else {
                 this.topics = PLSAUDTF.DEFAULT_TOPICS;
                 this.alpha = PLSAUDTF.DEFAULT_ALPHA;
@@ -224,7 +226,8 @@ public final class PLSAPredictUDAF extends 
AbstractGenericUDAFResolver {
                 this.wcListOI = 
ObjectInspectorFactory.getStandardListObjectInspector(wcListElemOI);
                 this.probMapKeyOI = 
PrimitiveObjectInspectorFactory.javaStringObjectInspector;
                 this.probMapValueElemOI = 
PrimitiveObjectInspectorFactory.javaStringObjectInspector;
-                this.probMapValueOI = 
ObjectInspectorFactory.getStandardListObjectInspector(probMapValueElemOI);
+                this.probMapValueOI =
+                        
ObjectInspectorFactory.getStandardListObjectInspector(probMapValueElemOI);
                 this.probMapOI = 
ObjectInspectorFactory.getStandardMapObjectInspector(probMapKeyOI,
                     probMapValueOI);
             }
@@ -241,8 +244,8 @@ public final class PLSAPredictUDAF extends 
AbstractGenericUDAFResolver {
                 fieldNames.add("probability");
                 
fieldOIs.add(PrimitiveObjectInspectorFactory.writableFloatObjectInspector);
 
-                outputOI = 
ObjectInspectorFactory.getStandardListObjectInspector(ObjectInspectorFactory.getStandardStructObjectInspector(
-                    fieldNames, fieldOIs));
+                outputOI = 
ObjectInspectorFactory.getStandardListObjectInspector(
+                    
ObjectInspectorFactory.getStandardStructObjectInspector(fieldNames, fieldOIs));
             }
             return outputOI;
         }
@@ -252,12 +255,14 @@ public final class PLSAPredictUDAF extends 
AbstractGenericUDAFResolver {
             ArrayList<ObjectInspector> fieldOIs = new 
ArrayList<ObjectInspector>();
 
             fieldNames.add("wcList");
-            
fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaStringObjectInspector));
+            fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(
+                PrimitiveObjectInspectorFactory.javaStringObjectInspector));
 
             fieldNames.add("probMap");
             fieldOIs.add(ObjectInspectorFactory.getStandardMapObjectInspector(
                 PrimitiveObjectInspectorFactory.javaStringObjectInspector,
-                
ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.javaFloatObjectInspector)));
+                ObjectInspectorFactory.getStandardListObjectInspector(
+                    
PrimitiveObjectInspectorFactory.javaFloatObjectInspector)));
 
             fieldNames.add("topics");
             
fieldOIs.add(PrimitiveObjectInspectorFactory.writableIntObjectInspector);
@@ -350,7 +355,8 @@ public final class PLSAPredictUDAF extends 
AbstractGenericUDAFResolver {
                 String word = 
PrimitiveObjectInspectorUtils.getString(e.getKey(), probMapKeyOI);
 
                 Object probMapValueObj = e.getValue();
-                List<?> probMapValueRaw = 
probMapValueOI.getList(HiveUtils.castLazyBinaryObject(probMapValueObj));
+                List<?> probMapValueRaw =
+                        
probMapValueOI.getList(HiveUtils.castLazyBinaryObject(probMapValueObj));
 
                 // fix map values to lists of Java Float objects
                 int probMapValueSize = probMapValueRaw.size();
@@ -370,7 +376,8 @@ public final class PLSAPredictUDAF extends 
AbstractGenericUDAFResolver {
             this.alpha = 
PrimitiveObjectInspectorFactory.writableFloatObjectInspector.get(alphaObj);
 
             Object deltaObj = internalMergeOI.getStructFieldData(partial, 
deltaOptionField);
-            this.delta = 
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector.get(deltaObj);
+            this.delta =
+                    
PrimitiveObjectInspectorFactory.writableDoubleObjectInspector.get(deltaObj);
 
             PLSAPredictAggregationBuffer myAggr = 
(PLSAPredictAggregationBuffer) agg;
             myAggr.setOptions(topics, alpha, delta);
@@ -383,8 +390,8 @@ public final class PLSAPredictUDAF extends 
AbstractGenericUDAFResolver {
             PLSAPredictAggregationBuffer myAggr = 
(PLSAPredictAggregationBuffer) agg;
             float[] topicDistr = myAggr.get();
 
-            SortedMap<Float, Integer> sortedDistr = new TreeMap<Float, 
Integer>(
-                Collections.reverseOrder());
+            SortedMap<Float, Integer> sortedDistr =
+                    new TreeMap<Float, Integer>(Collections.reverseOrder());
             for (int i = 0; i < topicDistr.length; i++) {
                 sortedDistr.put(topicDistr[i], i);
             }
@@ -401,8 +408,8 @@ public final class PLSAPredictUDAF extends 
AbstractGenericUDAFResolver {
 
     }
 
-    public static class PLSAPredictAggregationBuffer extends
-            GenericUDAFEvaluator.AbstractAggregationBuffer {
+    public static class PLSAPredictAggregationBuffer
+            extends GenericUDAFEvaluator.AbstractAggregationBuffer {
 
         private List<String> wcList;
         private Map<String, List<Float>> probMap;

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/topicmodel/ProbabilisticTopicModelBaseUDTF.java
----------------------------------------------------------------------
diff --git 
a/core/src/main/java/hivemall/topicmodel/ProbabilisticTopicModelBaseUDTF.java 
b/core/src/main/java/hivemall/topicmodel/ProbabilisticTopicModelBaseUDTF.java
index c7c6b15..33d940d 100644
--- 
a/core/src/main/java/hivemall/topicmodel/ProbabilisticTopicModelBaseUDTF.java
+++ 
b/core/src/main/java/hivemall/topicmodel/ProbabilisticTopicModelBaseUDTF.java
@@ -92,7 +92,8 @@ public abstract class ProbabilisticTopicModelBaseUDTF extends 
UDTFWithOptions {
     protected Options getOptions() {
         Options opts = new Options();
         opts.addOption("k", "topics", true, "The number of topics [default: 
10]");
-        opts.addOption("iter", "iterations", true, "The maximum number of 
iterations [default: 10]");
+        opts.addOption("iter", "iterations", true,
+            "The maximum number of iterations [default: 10]");
         opts.addOption("eps", "epsilon", true,
             "Check convergence based on the difference of perplexity [default: 
1E-1]");
         opts.addOption("s", "mini_batch_size", true,
@@ -196,8 +197,8 @@ public abstract class ProbabilisticTopicModelBaseUDTF 
extends UDTFWithOptions {
                 file = File.createTempFile("hivemall_topicmodel", ".sgmt");
                 file.deleteOnExit();
                 if (!file.canWrite()) {
-                    throw new UDFArgumentException("Cannot write a temporary 
file: "
-                            + file.getAbsolutePath());
+                    throw new UDFArgumentException(
+                        "Cannot write a temporary file: " + 
file.getAbsolutePath());
                 }
                 logger.info("Record training samples to a file: " + 
file.getAbsolutePath());
             } catch (IOException ioe) {
@@ -300,8 +301,9 @@ public abstract class ProbabilisticTopicModelBaseUDTF 
extends UDTFWithOptions {
         }
 
         final Reporter reporter = getReporter();
-        final Counters.Counter iterCounter = (reporter == null) ? null : 
reporter.getCounter(
-            "hivemall.topicmodel.ProbabilisticTopicModel$Counter", 
"iteration");
+        final Counters.Counter iterCounter = (reporter == null) ? null
+                : 
reporter.getCounter("hivemall.topicmodel.ProbabilisticTopicModel$Counter",
+                    "iteration");
 
         try {
             if (dst.getPosition() == 0L) {// run iterations w/o temporary file
@@ -339,9 +341,7 @@ public abstract class ProbabilisticTopicModelBaseUDTF 
extends UDTFWithOptions {
                         break;
                     }
                 }
-                logger.info("Performed "
-                        + Math.min(iter, iterations)
-                        + " iterations of "
+                logger.info("Performed " + Math.min(iter, iterations) + " 
iterations of "
                         + NumberUtils.formatNumber(numTrainingExamples)
                         + " training examples on memory (thus "
                         + NumberUtils.formatNumber(numTrainingExamples * 
Math.min(iter, iterations))
@@ -354,8 +354,8 @@ public abstract class ProbabilisticTopicModelBaseUDTF 
extends UDTFWithOptions {
                 try {
                     dst.flush();
                 } catch (IOException e) {
-                    throw new HiveException("Failed to flush a file: "
-                            + dst.getFile().getAbsolutePath(), e);
+                    throw new HiveException(
+                        "Failed to flush a file: " + 
dst.getFile().getAbsolutePath(), e);
                 }
                 if (logger.isInfoEnabled()) {
                     File tmpFile = dst.getFile();
@@ -385,8 +385,8 @@ public abstract class ProbabilisticTopicModelBaseUDTF 
extends UDTFWithOptions {
                         try {
                             bytesRead = dst.read(buf);
                         } catch (IOException e) {
-                            throw new HiveException("Failed to read a file: "
-                                    + dst.getFile().getAbsolutePath(), e);
+                            throw new HiveException(
+                                "Failed to read a file: " + 
dst.getFile().getAbsolutePath(), e);
                         }
                         if (bytesRead == 0) { // reached file EOF
                             break;
@@ -427,9 +427,7 @@ public abstract class ProbabilisticTopicModelBaseUDTF 
extends UDTFWithOptions {
                         break;
                     }
                 }
-                logger.info("Performed "
-                        + Math.min(iter, iterations)
-                        + " iterations of "
+                logger.info("Performed " + Math.min(iter, iterations) + " 
iterations of "
                         + NumberUtils.formatNumber(numTrainingExamples)
                         + " training examples on a secondary storage (thus "
                         + NumberUtils.formatNumber(numTrainingExamples * 
Math.min(iter, iterations))
@@ -442,8 +440,8 @@ public abstract class ProbabilisticTopicModelBaseUDTF 
extends UDTFWithOptions {
             try {
                 dst.close(true);
             } catch (IOException e) {
-                throw new HiveException("Failed to close a file: "
-                        + dst.getFile().getAbsolutePath(), e);
+                throw new HiveException(
+                    "Failed to close a file: " + 
dst.getFile().getAbsolutePath(), e);
             }
             this.inputBuf = null;
             this.fileIO = null;

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/utils/buffer/DynamicByteArray.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/utils/buffer/DynamicByteArray.java 
b/core/src/main/java/hivemall/utils/buffer/DynamicByteArray.java
index 2d91870..51046d1 100644
--- a/core/src/main/java/hivemall/utils/buffer/DynamicByteArray.java
+++ b/core/src/main/java/hivemall/utils/buffer/DynamicByteArray.java
@@ -73,8 +73,8 @@ public final class DynamicByteArray {
 
     public byte get(final int index) {
         if (index >= length) {
-            throw new IndexOutOfBoundsException("Index " + index + " is 
outside of 0.."
-                    + (length - 1));
+            throw new IndexOutOfBoundsException(
+                "Index " + index + " is outside of 0.." + (length - 1));
         }
         int i = index / chunkSize;
         int j = index % chunkSize;

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/utils/buffer/HeapBuffer.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/utils/buffer/HeapBuffer.java 
b/core/src/main/java/hivemall/utils/buffer/HeapBuffer.java
index 10051a9..59cd8d6 100644
--- a/core/src/main/java/hivemall/utils/buffer/HeapBuffer.java
+++ b/core/src/main/java/hivemall/utils/buffer/HeapBuffer.java
@@ -136,8 +136,8 @@ public final class HeapBuffer {
 
     private void validatePointer(final long ptr) {
         if (ptr >= _position) {
-            throw new IllegalArgumentException("Invalid pointer " + ptr + " 
does not in range [0,"
-                    + _position + ')');
+            throw new IllegalArgumentException(
+                "Invalid pointer " + ptr + " does not in range [0," + 
_position + ')');
         }
     }
 
@@ -288,8 +288,8 @@ public final class HeapBuffer {
 
     private void validateOffset(final long offset) {
         if (offset >= _chunkBytes) {
-            throw new IndexOutOfBoundsException("Invalid offset " + offset + " 
not in range [0,"
-                    + _chunkBytes + ')');
+            throw new IndexOutOfBoundsException(
+                "Invalid offset " + offset + " not in range [0," + _chunkBytes 
+ ')');
         }
     }
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/utils/collections/Fastutil.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/utils/collections/Fastutil.java 
b/core/src/main/java/hivemall/utils/collections/Fastutil.java
index 0ef1c21..c6ace89 100644
--- a/core/src/main/java/hivemall/utils/collections/Fastutil.java
+++ b/core/src/main/java/hivemall/utils/collections/Fastutil.java
@@ -38,22 +38,24 @@ public final class Fastutil {
     @Nonnull
     public static ObjectIterable<Int2LongMap.Entry> fastIterable(@Nonnull 
final Int2LongMap map) {
         final ObjectSet<Int2LongMap.Entry> entries = map.int2LongEntrySet();
-        return entries instanceof Int2LongMap.FastEntrySet ? new 
ObjectIterable<Int2LongMap.Entry>() {
-            public ObjectIterator<Int2LongMap.Entry> iterator() {
-                return ((Int2LongMap.FastEntrySet) entries).fastIterator();
-            }
-        }
+        return entries instanceof Int2LongMap.FastEntrySet
+                ? new ObjectIterable<Int2LongMap.Entry>() {
+                    public ObjectIterator<Int2LongMap.Entry> iterator() {
+                        return ((Int2LongMap.FastEntrySet) 
entries).fastIterator();
+                    }
+                }
                 : entries;
     }
 
     @Nonnull
     public static ObjectIterable<Int2FloatMap.Entry> fastIterable(@Nonnull 
final Int2FloatMap map) {
         final ObjectSet<Int2FloatMap.Entry> entries = map.int2FloatEntrySet();
-        return entries instanceof Int2FloatMap.FastEntrySet ? new 
ObjectIterable<Int2FloatMap.Entry>() {
-            public ObjectIterator<Int2FloatMap.Entry> iterator() {
-                return ((Int2FloatMap.FastEntrySet) entries).fastIterator();
-            }
-        }
+        return entries instanceof Int2FloatMap.FastEntrySet
+                ? new ObjectIterable<Int2FloatMap.Entry>() {
+                    public ObjectIterator<Int2FloatMap.Entry> iterator() {
+                        return ((Int2FloatMap.FastEntrySet) 
entries).fastIterator();
+                    }
+                }
                 : entries;
     }
 
@@ -61,11 +63,12 @@ public final class Fastutil {
     public static <V> ObjectIterable<Int2ObjectMap.Entry<V>> fastIterable(
             @Nonnull final Int2ObjectMap<V> map) {
         final ObjectSet<Int2ObjectMap.Entry<V>> entries = 
map.int2ObjectEntrySet();
-        return entries instanceof Int2ObjectMap.FastEntrySet ? new 
ObjectIterable<Int2ObjectMap.Entry<V>>() {
-            public ObjectIterator<Int2ObjectMap.Entry<V>> iterator() {
-                return ((Int2ObjectMap.FastEntrySet<V>) 
entries).fastIterator();
-            }
-        }
+        return entries instanceof Int2ObjectMap.FastEntrySet
+                ? new ObjectIterable<Int2ObjectMap.Entry<V>>() {
+                    public ObjectIterator<Int2ObjectMap.Entry<V>> iterator() {
+                        return ((Int2ObjectMap.FastEntrySet<V>) 
entries).fastIterator();
+                    }
+                }
                 : entries;
     }
 
@@ -73,12 +76,13 @@ public final class Fastutil {
     public static <K, V> ObjectIterable<Object2ObjectMap.Entry<K, V>> 
fastIterable(
             @Nonnull final Object2ObjectMap<K, V> map) {
         final ObjectSet<Object2ObjectMap.Entry<K, V>> entries = 
map.object2ObjectEntrySet();
-        return entries instanceof Object2ObjectMap.FastEntrySet ? new 
ObjectIterable<Object2ObjectMap.Entry<K, V>>() {
-            @SuppressWarnings("unchecked")
-            public ObjectIterator<Object2ObjectMap.Entry<K, V>> iterator() {
-                return ((Object2ObjectMap.FastEntrySet<K, V>) 
entries).fastIterator();
-            }
-        }
+        return entries instanceof Object2ObjectMap.FastEntrySet
+                ? new ObjectIterable<Object2ObjectMap.Entry<K, V>>() {
+                    @SuppressWarnings("unchecked")
+                    public ObjectIterator<Object2ObjectMap.Entry<K, V>> 
iterator() {
+                        return ((Object2ObjectMap.FastEntrySet<K, V>) 
entries).fastIterator();
+                    }
+                }
                 : entries;
     }
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/utils/collections/arrays/DoubleArray3D.java
----------------------------------------------------------------------
diff --git 
a/core/src/main/java/hivemall/utils/collections/arrays/DoubleArray3D.java 
b/core/src/main/java/hivemall/utils/collections/arrays/DoubleArray3D.java
index b7c5590..39e9021 100644
--- a/core/src/main/java/hivemall/utils/collections/arrays/DoubleArray3D.java
+++ b/core/src/main/java/hivemall/utils/collections/arrays/DoubleArray3D.java
@@ -111,21 +111,22 @@ public final class DoubleArray3D {
             throw new IllegalStateException("Double3DArray#configure() is not 
called");
         }
         if (i >= n1 || i < 0) {
-            throw new ArrayIndexOutOfBoundsException("Index '" + i
-                    + "' out of bounds for 1st dimension of size " + n1);
+            throw new ArrayIndexOutOfBoundsException(
+                "Index '" + i + "' out of bounds for 1st dimension of size " + 
n1);
         }
         if (j >= n2 || j < 0) {
-            throw new ArrayIndexOutOfBoundsException("Index '" + j
-                    + "' out of bounds for 2nd dimension of size " + n2);
+            throw new ArrayIndexOutOfBoundsException(
+                "Index '" + j + "' out of bounds for 2nd dimension of size " + 
n2);
         }
         if (k >= n3 || k < 0) {
-            throw new ArrayIndexOutOfBoundsException("Index '" + k
-                    + "' out of bounds for 3rd dimension of size " + n3);
+            throw new ArrayIndexOutOfBoundsException(
+                "Index '" + k + "' out of bounds for 3rd dimension of size " + 
n3);
         }
         final int idx = i * p1 + j * p2 + k;
         if (idx >= size) {
-            throw new IndexOutOfBoundsException("Computed internal index '" + 
idx
-                    + "' exceeds buffer size '" + size + "' where i=" + i + ", 
j=" + j + ", k=" + k);
+            throw new IndexOutOfBoundsException(
+                "Computed internal index '" + idx + "' exceeds buffer size '" 
+ size + "' where i="
+                        + i + ", j=" + j + ", k=" + k);
         }
         return idx;
     }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/utils/collections/lists/IntArrayList.java
----------------------------------------------------------------------
diff --git 
a/core/src/main/java/hivemall/utils/collections/lists/IntArrayList.java 
b/core/src/main/java/hivemall/utils/collections/lists/IntArrayList.java
index ea17c5f..fed61cc 100644
--- a/core/src/main/java/hivemall/utils/collections/lists/IntArrayList.java
+++ b/core/src/main/java/hivemall/utils/collections/lists/IntArrayList.java
@@ -101,8 +101,8 @@ public final class IntArrayList implements Serializable {
 
     public void set(final int index, final int value) {
         if (index > used) {
-            throw new IllegalArgumentException("Index " + index + " MUST be 
less than size() "
-                    + used);
+            throw new IllegalArgumentException(
+                "Index " + index + " MUST be less than size() " + used);
         } else if (index == used) {
             ++used;
         }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/utils/collections/maps/Long2DoubleOpenHashTable.java
----------------------------------------------------------------------
diff --git 
a/core/src/main/java/hivemall/utils/collections/maps/Long2DoubleOpenHashTable.java
 
b/core/src/main/java/hivemall/utils/collections/maps/Long2DoubleOpenHashTable.java
index 84eac5f..765cd30 100644
--- 
a/core/src/main/java/hivemall/utils/collections/maps/Long2DoubleOpenHashTable.java
+++ 
b/core/src/main/java/hivemall/utils/collections/maps/Long2DoubleOpenHashTable.java
@@ -180,8 +180,8 @@ public final class Long2DoubleOpenHashTable implements 
Externalizable {
                     keyIdx += keyLength;
                 }
                 if (keyIdx == loopIndex) {
-                    throw new IllegalStateException("Detected infinite loop 
where key=" + key
-                            + ", keyIdx=" + keyIdx);
+                    throw new IllegalStateException(
+                        "Detected infinite loop where key=" + key + ", 
keyIdx=" + keyIdx);
                 }
 
                 state = states[keyIdx];
@@ -256,8 +256,8 @@ public final class Long2DoubleOpenHashTable implements 
Externalizable {
                 keyIdx += keyLength;
             }
             if (keyIdx == startIndex) {
-                throw new IllegalStateException("Detected infinite loop where 
key=" + key
-                        + ", keyIdx=" + keyIdx);
+                throw new IllegalStateException(
+                    "Detected infinite loop where key=" + key + ", keyIdx=" + 
keyIdx);
             }
         }
     }
@@ -338,8 +338,8 @@ public final class Long2DoubleOpenHashTable implements 
Externalizable {
                         keyIdx += newCapacity;
                     }
                     if (keyIdx == loopIndex) {
-                        throw new IllegalStateException("Detected infinite 
loop where key=" + k
-                                + ", keyIdx=" + keyIdx);
+                        throw new IllegalStateException(
+                            "Detected infinite loop where key=" + k + ", 
keyIdx=" + keyIdx);
                     }
                 } while (newStates[keyIdx] != FREE);
             }
@@ -461,8 +461,8 @@ public final class Long2DoubleOpenHashTable implements 
Externalizable {
                         keyIdx += newCapacity;
                     }
                     if (keyIdx == loopIndex) {
-                        throw new IllegalStateException("Detected infinite 
loop where key=" + k
-                                + ", keyIdx=" + keyIdx);
+                        throw new IllegalStateException(
+                            "Detected infinite loop where key=" + k + ", 
keyIdx=" + keyIdx);
                     }
                 } while (states[keyIdx] != FREE);
             }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/utils/collections/maps/Long2FloatOpenHashTable.java
----------------------------------------------------------------------
diff --git 
a/core/src/main/java/hivemall/utils/collections/maps/Long2FloatOpenHashTable.java
 
b/core/src/main/java/hivemall/utils/collections/maps/Long2FloatOpenHashTable.java
index ca8c4ee..0bf5319 100644
--- 
a/core/src/main/java/hivemall/utils/collections/maps/Long2FloatOpenHashTable.java
+++ 
b/core/src/main/java/hivemall/utils/collections/maps/Long2FloatOpenHashTable.java
@@ -178,8 +178,8 @@ public final class Long2FloatOpenHashTable implements 
Externalizable {
                     keyIdx += keyLength;
                 }
                 if (keyIdx == loopIndex) {
-                    throw new IllegalStateException("Detected infinite loop 
where key=" + key
-                            + ", keyIdx=" + keyIdx);
+                    throw new IllegalStateException(
+                        "Detected infinite loop where key=" + key + ", 
keyIdx=" + keyIdx);
                 }
 
                 state = states[keyIdx];
@@ -254,8 +254,8 @@ public final class Long2FloatOpenHashTable implements 
Externalizable {
                 keyIdx += keyLength;
             }
             if (keyIdx == startIndex) {
-                throw new IllegalStateException("Detected infinite loop where 
key=" + key
-                        + ", keyIdx=" + keyIdx);
+                throw new IllegalStateException(
+                    "Detected infinite loop where key=" + key + ", keyIdx=" + 
keyIdx);
             }
         }
     }
@@ -336,8 +336,8 @@ public final class Long2FloatOpenHashTable implements 
Externalizable {
                         keyIdx += newCapacity;
                     }
                     if (keyIdx == loopIndex) {
-                        throw new IllegalStateException("Detected infinite 
loop where key=" + k
-                                + ", keyIdx=" + keyIdx);
+                        throw new IllegalStateException(
+                            "Detected infinite loop where key=" + k + ", 
keyIdx=" + keyIdx);
                     }
                 } while (newStates[keyIdx] != FREE);
             }
@@ -459,8 +459,8 @@ public final class Long2FloatOpenHashTable implements 
Externalizable {
                         keyIdx += newCapacity;
                     }
                     if (keyIdx == loopIndex) {
-                        throw new IllegalStateException("Detected infinite 
loop where key=" + k
-                                + ", keyIdx=" + keyIdx);
+                        throw new IllegalStateException(
+                            "Detected infinite loop where key=" + k + ", 
keyIdx=" + keyIdx);
                     }
                 } while (states[keyIdx] != FREE);
             }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/utils/collections/maps/Long2IntOpenHashTable.java
----------------------------------------------------------------------
diff --git 
a/core/src/main/java/hivemall/utils/collections/maps/Long2IntOpenHashTable.java 
b/core/src/main/java/hivemall/utils/collections/maps/Long2IntOpenHashTable.java
index 360e806..4fb61bf 100644
--- 
a/core/src/main/java/hivemall/utils/collections/maps/Long2IntOpenHashTable.java
+++ 
b/core/src/main/java/hivemall/utils/collections/maps/Long2IntOpenHashTable.java
@@ -68,7 +68,8 @@ public final class Long2IntOpenHashTable implements 
Externalizable {
     protected int[] _values;
     protected byte[] _states;
 
-    protected Long2IntOpenHashTable(int size, float loadFactor, float 
growFactor, boolean forcePrime) {
+    protected Long2IntOpenHashTable(int size, float loadFactor, float 
growFactor,
+            boolean forcePrime) {
         if (size < 1) {
             throw new IllegalArgumentException();
         }
@@ -161,8 +162,8 @@ public final class Long2IntOpenHashTable implements 
Externalizable {
                     keyIdx += keyLength;
                 }
                 if (keyIdx == loopIndex) {
-                    throw new IllegalStateException("Detected infinite loop 
where key=" + key
-                            + ", keyIdx=" + keyIdx);
+                    throw new IllegalStateException(
+                        "Detected infinite loop where key=" + key + ", 
keyIdx=" + keyIdx);
                 }
 
                 state = states[keyIdx];
@@ -228,8 +229,8 @@ public final class Long2IntOpenHashTable implements 
Externalizable {
                     keyIdx += keyLength;
                 }
                 if (keyIdx == loopIndex) {
-                    throw new IllegalStateException("Detected infinite loop 
where key=" + key
-                            + ", keyIdx=" + keyIdx);
+                    throw new IllegalStateException(
+                        "Detected infinite loop where key=" + key + ", 
keyIdx=" + keyIdx);
                 }
 
                 state = states[keyIdx];
@@ -304,8 +305,8 @@ public final class Long2IntOpenHashTable implements 
Externalizable {
                 keyIdx += keyLength;
             }
             if (keyIdx == startIndex) {
-                throw new IllegalStateException("Detected infinite loop where 
key=" + key
-                        + ", keyIdx=" + keyIdx);
+                throw new IllegalStateException(
+                    "Detected infinite loop where key=" + key + ", keyIdx=" + 
keyIdx);
             }
         }
     }
@@ -387,8 +388,8 @@ public final class Long2IntOpenHashTable implements 
Externalizable {
                         keyIdx += newCapacity;
                     }
                     if (keyIdx == loopIndex) {
-                        throw new IllegalStateException("Detected infinite 
loop where key=" + k
-                                + ", keyIdx=" + keyIdx);
+                        throw new IllegalStateException(
+                            "Detected infinite loop where key=" + k + ", 
keyIdx=" + keyIdx);
                     }
                 } while (newStates[keyIdx] != FREE);
             }
@@ -508,8 +509,8 @@ public final class Long2IntOpenHashTable implements 
Externalizable {
                         keyIdx += newCapacity;
                     }
                     if (keyIdx == loopIndex) {
-                        throw new IllegalStateException("Detected infinite 
loop where key=" + k
-                                + ", keyIdx=" + keyIdx);
+                        throw new IllegalStateException(
+                            "Detected infinite loop where key=" + k + ", 
keyIdx=" + keyIdx);
                     }
                 } while (states[keyIdx] != FREE);
             }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/utils/collections/maps/OpenHashTable.java
----------------------------------------------------------------------
diff --git 
a/core/src/main/java/hivemall/utils/collections/maps/OpenHashTable.java 
b/core/src/main/java/hivemall/utils/collections/maps/OpenHashTable.java
index 28a677e..599a70e 100644
--- a/core/src/main/java/hivemall/utils/collections/maps/OpenHashTable.java
+++ b/core/src/main/java/hivemall/utils/collections/maps/OpenHashTable.java
@@ -157,8 +157,8 @@ public final class OpenHashTable<K, V> implements 
Externalizable {
                     keyIdx += keyLength;
                 }
                 if (keyIdx == loopIndex) {
-                    throw new IllegalStateException("Detected infinite loop 
where key=" + key
-                            + ", keyIdx=" + keyIdx);
+                    throw new IllegalStateException(
+                        "Detected infinite loop where key=" + key + ", 
keyIdx=" + keyIdx);
                 }
 
                 state = states[keyIdx];
@@ -237,8 +237,8 @@ public final class OpenHashTable<K, V> implements 
Externalizable {
                 keyIdx += keyLength;
             }
             if (keyIdx == startIndex) {
-                throw new IllegalStateException("Detected infinite loop where 
key=" + key
-                        + ", keyIdx=" + keyIdx);
+                throw new IllegalStateException(
+                    "Detected infinite loop where key=" + key + ", keyIdx=" + 
keyIdx);
             }
         }
     }
@@ -325,8 +325,8 @@ public final class OpenHashTable<K, V> implements 
Externalizable {
                         keyIdx += newCapacity;
                     }
                     if (keyIdx == loopIndex) {
-                        throw new IllegalStateException("Detected infinite 
loop where key=" + k
-                                + ", keyIdx=" + keyIdx);
+                        throw new IllegalStateException(
+                            "Detected infinite loop where key=" + k + ", 
keyIdx=" + keyIdx);
                     }
                 } while (newStates[keyIdx] != FREE);
             }
@@ -452,8 +452,8 @@ public final class OpenHashTable<K, V> implements 
Externalizable {
                         keyIdx += newCapacity;
                     }
                     if (keyIdx == loopIndex) {
-                        throw new IllegalStateException("Detected infinite 
loop where key=" + k
-                                + ", keyIdx=" + keyIdx);
+                        throw new IllegalStateException(
+                            "Detected infinite loop where key=" + k + ", 
keyIdx=" + keyIdx);
                     }
                 } while (states[keyIdx] != FREE);
             }

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/c4036695/core/src/main/java/hivemall/utils/geospatial/GeoSpatialUtils.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/utils/geospatial/GeoSpatialUtils.java 
b/core/src/main/java/hivemall/utils/geospatial/GeoSpatialUtils.java
index fdccc95..5bc1d1e 100644
--- a/core/src/main/java/hivemall/utils/geospatial/GeoSpatialUtils.java
+++ b/core/src/main/java/hivemall/utils/geospatial/GeoSpatialUtils.java
@@ -96,8 +96,8 @@ public final class GeoSpatialUtils {
         double dLon = toRadians(lon2 - lon1);
         double sinDLat = sin(dLat / 2.d);
         double sinDLon = sin(dLon / 2.d);
-        double a = sinDLat * sinDLat + cos(toRadians(lat1)) * 
cos(toRadians(lat2)) * sinDLon
-                * sinDLon;
+        double a =
+                sinDLat * sinDLat + cos(toRadians(lat1)) * 
cos(toRadians(lat2)) * sinDLon * sinDLon;
         double c = 2.d * atan2(sqrt(a), sqrt(1.d - a));
         return R * c; // Distance in Km
     }

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