GitHub user hhbyyh opened a pull request:
https://github.com/apache/spark/pull/10627
[SPARK-12685] [MLlib] word2vec trainWordsCount gets overflow
jira: https://issues.apache.org/jira/browse/SPARK-12685
the log of `word2vec` reports
trainWordsCount = -785727483
during computation over a large dataset.
Update the priority as it will affects the computation process.
`alpha = learningRate * (1 - numPartitions * wordCount.toDouble /
(trainWordsCount + 1))`
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hhbyyh/spark w2voverflow
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10627.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #10627
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commit e2d83873c1bf1c94ef09b3f0db0a4795bed0d719
Author: Yuhao Yang <[email protected]>
Date: 2016-01-07T04:26:55Z
fix overflow in word2vec
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