| commit | cd95d725015aa4f1cf3bb5429fd9006f0de7d737 | [log] [tgz] |
|---|---|---|
| author | liberato@chromium.org <liberato@chromium.org> | Tue Jan 08 19:23:56 2019 |
| committer | Commit Bot <commit-bot@chromium.org> | Tue Jan 08 19:23:56 2019 |
| tree | f6e3f36d60dc9dc263942e939334b832d307e6b4 | |
| parent | 8a7d3de4066f3c2b0f2e951fcde2bdbf54e0b1dc [diff] |
Optimize RandomTreeTrainer.
Replacing vectors with base::Optional in constant {target, feature}
value detection results in ~20% reduction in runtime on the Fisher
iris ExtraTrees test with nominal features. (~420 msec => ~335 msec
locally). Note that the features really are numeric, so one-hot
conversion to nominal results in over 100 nominal features.
For reference, the same test with numeric features takes about
20 msec either way.
Change-Id: Ib938914b867b4247579d04fe298b7326c10151ec
Reviewed-on: https://chromium-review.googlesource.com/c/1394798
Reviewed-by: Dan Sanders <sandersd@chromium.org>
Commit-Queue: Frank Liberato <liberato@chromium.org>
Cr-Commit-Position: refs/heads/master@{#620830}
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