Chris Nardi created SPARK-29495:
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Summary: Add ability to estimate per
Key: SPARK-29495
URL: https://issues.apache.org/jira/browse/SPARK-29495
Project: Spark
Issue Type: Improvement
Components: ML
Affects Versions: 2.4.4
Reporter: Chris Nardi
In gensim, [the LDA
model|[https://radimrehurek.com/gensim/models/ldamodel.html]] has a parameter
eval_every that allows a user to specify that the model should be evaluated
every X iterations to determine its log perplexity. This helps to determine
convergence of the model, and whether or not the proper number of iterations
has been chosen. Spark has no similar functionality in its implementation of
LDA. This should be added, as it appears the only way to achieve this
functionality would be to train models of varying numbers of iterations and
evaluate each's log perplexity.
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