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Strange cut for imbalanced distributions #382

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bkamins opened this issue Feb 25, 2022 · 1 comment
Open

Strange cut for imbalanced distributions #382

bkamins opened this issue Feb 25, 2022 · 1 comment

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@bkamins
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bkamins commented Feb 25, 2022

I find this result strange:

julia> cut([fill(1, 10); 4], 2)
11-element CategoricalArray{String,1,UInt32}:
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"

julia> cut([fill(1, 10); 4], 3, allowempty=true)
11-element CategoricalArray{String,1,UInt32}:
 "Q2: [1.0, 4.0]"
 "Q2: [1.0, 4.0]"
 "Q2: [1.0, 4.0]"
 "Q2: [1.0, 4.0]"
 "Q2: [1.0, 4.0]"
 "Q2: [1.0, 4.0]"
 "Q2: [1.0, 4.0]"
 "Q2: [1.0, 4.0]"
 "Q2: [1.0, 4.0]"
 "Q2: [1.0, 4.0]"
 "Q2: [1.0, 4.0]"
@bkamins
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bkamins commented Feb 25, 2022 

julia> cut([fill(1, 5); fill(4,5)], 2)
10-element CategoricalArray{String,1,UInt32}:
 "Q1: [1.0, 2.5)"
 "Q1: [1.0, 2.5)"
 "Q1: [1.0, 2.5)"
 "Q1: [1.0, 2.5)"
 "Q1: [1.0, 2.5)"
 "Q2: [2.5, 4.0]"
 "Q2: [2.5, 4.0]"
 "Q2: [2.5, 4.0]"
 "Q2: [2.5, 4.0]"
 "Q2: [2.5, 4.0]"

julia> cut([fill(1, 5); fill(4,5)], 3)
10-element CategoricalArray{String,1,UInt32}:
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"
 "Q1: [1.0, 4.0]"

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