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From iyerr3 <>
Subject [GitHub] incubator-madlib pull request: misc doc changes for 1 dot 9
Date Sat, 26 Mar 2016 00:19:37 GMT
Github user iyerr3 commented on a diff in the pull request:
    --- Diff: src/ports/postgres/modules/pca/pca.sql_in ---
    @@ -324,13 +341,20 @@ string should be double-quoted; in this case the input would be
     \ref background_pca "Technical Background"), sparse matrices almost always
     become dense during the training process. Thus, this implementation
     automatically densifies sparse matrix input, and there should be no expected
    - performance improvement in using sparse matrix input over dense matrix input.
    -- If both <em>lanczos_iter</em> and proportion of variance (via the 
    -<em>grouping_cols</em>) is defined, <em>lanczos_iter</em> will

    -take precedence in determining the number of principal components (i.e. the 
    -number of principal components will not be greater than <em>lanczos_iter</em>

    -even if the target proportion is not reached).
    +performance improvement in using sparse matrix input over dense matrix input.
    +- For the parameter 'components_param', INTEGER and FLOAT are
    +interpreted differently.  A special case to be aware of:
    +'components_param' = 1 (INTEGER) will return 1 principle
    --- End diff --
    again, principle -> principal

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