8000 Isolation Forest executes single-threaded during prediction · Issue #14000 · scikit-learn/scikit-learn · GitHub
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Isolation Forest executes single-threaded during prediction #14000

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sergiormpereira opened this issue May 31, 2019 · 0 comments · Fixed by #28622
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Isolation Forest executes single-threaded during prediction #14000

sergiormpereira opened this issue May 31, 2019 · 0 comments · Fixed by #28622
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module:ensemble Performance

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@sergiormpereira
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Description

Isolation Forest is executed in parallel during fitting. But, during prediction it is running single-threaded. This translates into being quite slow at prediction time.

Together with this issue I am submitting a PR that parallelises prediction.

Steps/Code to Reproduce

NA

Expected Results

NA

Actual Results

NA

Versions

python: 3.6.8
sklearn: 0.22.dev0
numpy: 1.16.4
scipy: 1.3.0
Cython: 0.29.9
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ENH Enable prediction of isolation forest in parallel adam2392/scikit-learn
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@cmarmo @thomasjpfan @sergiormpereira
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