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  1. Spark
  2. SPARK-19346

Add further cold-start strategies for ALS prediction

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Incomplete
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: ML
    • Labels:

      Description

      As discussed in SPARK-14489 and the related PR, additional strategies may be useful in the case of unknown users/items at prediction time for ALS. These include:

      • some form of "average rating" as a default
      • computing predictions using the average user/item vector

      There may be other interesting approaches too. This ticket tracks the addition of these more advanced strategies.

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              • Assignee:
                Unassigned
                Reporter:
                mlnick Nick Pentreath
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