Github user BryanCutler commented on a diff in the pull request:
https://github.com/apache/spark/pull/14308#discussion_r72833265
--- Diff:
examples/src/main/java/org/apache/spark/examples/ml/JavaMaxAbsScalerExample.java
---
@@ -34,10 +44,17 @@ public static void main(String[] args) {
.getOrCreate();
// $example on$
- Dataset<Row> dataFrame = spark
- .read()
- .format("libsvm")
- .load("data/mllib/sample_libsvm_data.txt");
+ List<Row> data = Arrays.asList(
--- End diff --
The data in the file is fine, but uses sparse vectors so that when the
result is output, it doesn't really show anything. Using just a small sample
dataset, you can see what it is doing from the output
before
```
+-----+--------------------+--------------------+
|label| features| scaledFeatures|
+-----+--------------------+--------------------+
| 0.0|(692,[127,128,129...|(692,[127,128,129...|
| 1.0|(692,[158,159,160...|(692,[158,159,160...|
| 1.0|(692,[124,125,126...|(692,[124,125,126...|
```
after
```
+--------------+----------------+
| features| scaledFeatures|
+--------------+----------------+
|[1.0,0.1,-8.0]|[0.25,0.01,-1.0]|
|[2.0,1.0,-4.0]| [0.5,0.1,-0.5]|
|[4.0,10.0,8.0]| [1.0,1.0,1.0]|
```
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