[SPARK-9888][MLlib]User guide for new LDA features #8254
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Test build #41059 has finished for PR 8254 at commit
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@jkbradley do you mind reviewing? |
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| *Note*: LDA is a new feature with some missing functionality. In particular, it does not yet | ||
| support prediction on new documents, and it does not have a Python API. These will be added in the future. | ||
| * `LDAOptimizer`: Optimizer to use for learning the LDA model, either |
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Actually just called "optimizer" in public API
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| * Topics: Inferred topics, each of which is a probability distribution over terms (words). | ||
| * Topic distributions for documents: For each non empty document in the training set, LDA gives a probability distribution over topics. (EM only). Note that for empty documents, we don't create the topic distributions. (EM only) | ||
| * Topics correspond to cluster centers, and documents correspond to |
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FYI, for the future, try not to change formatting in Markdown unnecessarily since it makes reviewing harder. There aren't style guidelines for Markdown.
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Test build #41541 has finished for PR 8254 at commit
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asfgit
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See [discussion](#8254 (comment)) CC jkbradley Author: Feynman Liang <fliang@databricks.com> Closes #8422 from feynmanliang/SPARK-10230. (cherry picked from commit 881208a) Signed-off-by: Joseph K. Bradley <joseph@databricks.com>
asfgit
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See [discussion](#8254 (comment)) CC jkbradley Author: Feynman Liang <fliang@databricks.com> Closes #8422 from feynmanliang/SPARK-10230.
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LGTM pending tests |
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Test build #41569 has finished for PR 8254 at commit
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Merging with master and branch-1.5 |
asfgit
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* Adds two new sections to LDA's user guide; one for each optimizer/model * Documents new features added to LDA (e.g. topXXXperXXX, asymmetric priors, hyperpam optimization) * Cleans up a TODO and sets a default parameter in LDA code jkbradley hhbyyh Author: Feynman Liang <fliang@databricks.com> Closes #8254 from feynmanliang/SPARK-9888. (cherry picked from commit 125205c) Signed-off-by: Joseph K. Bradley <joseph@databricks.com>
kiszk
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Dec 26, 2015
See [discussion](apache/spark#8254 (comment)) CC jkbradley Author: Feynman Liang <fliang@databricks.com> Closes #8422 from feynmanliang/SPARK-10230.
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@jkbradley @hhbyyh