Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/5467#discussion_r29032437
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/feature/Word2Vec.scala ---
@@ -429,7 +429,36 @@ class Word2Vec extends Serializable with Logging {
*/
@Experimental
class Word2VecModel private[mllib] (
- private val model: Map[String, Array[Float]]) extends Serializable
with Saveable {
+ model: Map[String, Array[Float]]) extends Serializable with Saveable {
+
+ // wordList: Ordered list of words obtained from model.
+ private val wordList: Array[String] = model.keys.toArray
+
+ // wordIndex: Maps each word to an index, which can retrieve the
corresponding
+ // vector from wordVectors (see below).
+ private val wordIndex: Map[String, Int] = wordList.zip(0 until
model.size).toMap
--- End diff --
`wordList.zipWithIndex.toMap`
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