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  1. Mahout
  2. MAHOUT-797

MapReduce SSVD: provide alternative B-pipeline per B=R' ^{-1} Y'A

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Won't Fix
    • Affects Version/s: 0.5, 0.6
    • Fix Version/s: None
    • Component/s: None
    • Labels:
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      Description

      Since alternative flow using Cholesky decomposition is extremely easy to add to existing computations of BB', I am thinking of just adding an option that chooses between B-pipeline with QR step and B-pipeline with Y'Y-Cholesky step.

      Ongoing work and some initial code (Y'Y step) is here https://github.com/dlyubimov/mahout-commits/tree/MAHOUT-797.

      I also want to fix what's left unfixed in MAHOUT-638.

        Attachments

        1. MAHOUT-797.pdf
          216 kB
          Dmitriy Lyubimov

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              • Assignee:
                dlyubimov Dmitriy Lyubimov
                Reporter:
                dlyubimov Dmitriy Lyubimov
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