[7.x][ML] Refactor DFA custom processor to cross validation splitter … #53956
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…lastic#53915) While `CustomProcessor` is generic and allows for flexibility, there are new requirements that make cross validation a concept it's hard to abstract behind custom processor. In particular, we would like to add data_counts to the DFA jobs stats. Counting training VS. test docs would be a useful statistic. We would also want to add a different cross validation strategy for multiclass classification. This commit renames custom processors to cross validation splitters which allows for those enhancements without cryptically doing things as a side effect of the abstract custom processing. Backport of elastic#53915
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run elasticsearch-ci/master-fwc |
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run elasticsearch-ci/master-fwc |
dimitris-athanasiou
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…(#53915)
While
CustomProcessoris generic and allows for flexibility, thereare new requirements that make cross validation a concept it's hard
to abstract behind custom processor. In particular, we would like to
add data_counts to the DFA jobs stats. Counting training VS. test
docs would be a useful statistic. We would also want to add a
different cross validation strategy for multiclass classification.
This commit renames custom processors to cross validation splitters
which allows for those enhancements without cryptically doing
things as a side effect of the abstract custom processing.
Backport of #53915