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From zentol <...@git.apache.org>
Subject [GitHub] flink pull request #2542: [FLINK-4613] Extend ALS to handle implicit feedbac...
Date Fri, 23 Sep 2016 11:51:37 GMT
Github user zentol commented on a diff in the pull request:

    --- Diff: docs/dev/libs/ml/als.md ---
    @@ -49,6 +49,18 @@ By applying this step alternately to the matrices $U$ and $V$, we can
     The matrix $R$ is given in its sparse representation as a tuple of $(i, j, r)$ where
$i$ denotes the row index, $j$ the column index and $r$ is the matrix value at position $(i,j)$.
    +An alternative model can be used for _implicit feedback_ datasets.
    +These datasets only contain implicit feedback from the user
    +in constrast to datasets with explicit feedback like movie ratings.
    --- End diff --
    constrast -> contrast

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