Github user myui commented on a diff in the pull request:
https://github.com/apache/incubator-hivemall/pull/116#discussion_r140413586
--- Diff:
core/src/main/java/hivemall/unsupervised/AbstractWord2vecModel.java ---
@@ -0,0 +1,125 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package hivemall.unsupervised;
+
+import hivemall.math.random.PRNG;
+import hivemall.math.random.RandomNumberGeneratorFactory;
+import hivemall.utils.collections.maps.Int2FloatOpenHashTable;
+
+import javax.annotation.Nonnegative;
+import javax.annotation.Nonnull;
+
+public abstract class AbstractWord2vecModel {
--- End diff --
Please rename `Word2vec` to `Word2Vec` as seen in
[spark](https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/mllib/feature/Word2Vec.scala).
---
