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  1. Spark
  2. SPARK-8536

Generalize LDA to asymmetric doc-topic priors

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.5.0
    • Component/s: MLlib
    • Labels:
      None
    • Target Version/s:

      Description

      Several users have requested LDA using asymmetric priors, including learning those hyperparameters. We should add this functionality.

      Note that it could be added to EM, online LDA, or both. I suggest adding it to online LDA initially, followed by EM in a separate PR.

      This JIRA is now limited to the document-topic prior (docConcentration). See linked JIRA for topicConcentration, which is lower priority.

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              • Assignee:
                fliang Feynman Liang
                Reporter:
                josephkb Joseph K. Bradley
                Shepherd:
                Joseph K. Bradley
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                  Updated:
                  Resolved:

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