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[FIX] OWBoxPlot: Faster selection#2595

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astaric merged 1 commit intobiolab:masterfrom
lanzagar:fastsel
Sep 21, 2017
Merged

[FIX] OWBoxPlot: Faster selection#2595
astaric merged 1 commit intobiolab:masterfrom
lanzagar:fastsel

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@lanzagar
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@lanzagar lanzagar commented Sep 18, 2017

Issue

Selection of instances in Box Plot had complexity O(n_all * n_selected), making it too slow / freeze for data with a couple thousand instances.

Description of changes

Use faster membership testing.

Includes
  • Code changes
  • Tests
  • Documentation

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codecov-io commented Sep 18, 2017

Codecov Report

Merging #2595 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #2595      +/-   ##
==========================================
+ Coverage   75.07%   75.07%   +<.01%     
==========================================
  Files         327      327              
  Lines       57723    57723              
==========================================
+ Hits        43336    43338       +2     
+ Misses      14387    14385       -2

if inst in selected]
selected_ids = set(selected.ids)
selection = [i for i, id in enumerate(self.dataset.ids)
if id in selected_ids]
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How about:

selection = np.in1d(self.dataset.ids, selected.ids).nonzero()[0]

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Even better 👍

@astaric astaric merged commit 4ebe394 into biolab:master Sep 21, 2017
@lanzagar lanzagar deleted the fastsel branch March 14, 2022 14:41
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4 participants