Github user yinxusen commented on a diff in the pull request:
https://github.com/apache/spark/pull/5596#discussion_r29060128
--- Diff: mllib/src/main/scala/org/apache/spark/ml/feature/Word2Vec.scala
---
@@ -0,0 +1,190 @@
+/*
+ * 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 org.apache.spark.ml.feature
+
+import org.apache.spark.annotation.AlphaComponent
+import org.apache.spark.ml.param._
+import org.apache.spark.ml.param.shared._
+import org.apache.spark.ml.util.SchemaUtils
+import org.apache.spark.ml.{Estimator, Model}
+import org.apache.spark.mllib.feature
+import org.apache.spark.mllib.linalg.{VectorUDT, Vectors}
+import org.apache.spark.sql.functions._
+import org.apache.spark.sql.types._
+import org.apache.spark.sql.{DataFrame, Row}
+
+/**
+ * Params for [[Word2Vec]] and [[Word2VecModel]].
+ */
+private[feature] trait Word2VecBase extends Params
+ with HasInputCol with HasOutputCol with HasMaxIter with HasStepSize {
+
+ /**
+ * The dimension of the code that you want to transform from words.
+ */
+ final val vectorSize = new IntParam(
+ this, "vectorSize", "the dimension of codes after transforming from
words")
+
+ setDefault(vectorSize -> 100)
+
+ /** @group getParam */
+ def getVectorSize: Int = getOrDefault(vectorSize)
+
+ /**
+ * Number of partitions for sentences of words.
+ */
+ final val numPartitions = new IntParam(
+ this, "numPartitions", "number of partitions for sentences of words")
+
+ setDefault(numPartitions -> 1)
+
+ /** @group getParam */
+ def getNumPartitions: Int = getOrDefault(numPartitions)
+
+ /**
+ * A random seed to random an initial vector.
+ */
+ final val seed = new LongParam(this, "seed", "a random seed to random an
initial vector")
--- End diff --
sure
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