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[ENH] Implement the Proximity Forest 2 classifier using aeon distances #428

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TonyBagnall opened this issue May 13, 2023 · 2 comments · May be fixed by #1978
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[ENH] Implement the Proximity Forest 2 classifier using aeon distances #428

TonyBagnall opened this issue May 13, 2023 · 2 comments · May be fixed by #1978
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classification Classification package distances Distances package enhancement New feature, improvement request or other non-bug code enhancement implementing algorithms Implementing new algorithms/estimators

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@TonyBagnall
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Describe the feature or idea you want to propose

a new distance based classifier, Proximity Forest 2, has recently been proposed. This is probably the current best distance based algorithm for time series classification (we have not used it yet). IT would be fantastic to have an aeon implementation.

https://arxiv.org/abs/2304.05800

Describe your proposed solution

It should probably be done in conjunction with #159 (or instead of #159?) using aeon distance functions.

Describe alternatives you've considered, if relevant

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@TonyBagnall TonyBagnall added enhancement New feature, improvement request or other non-bug code enhancement classification Classification package implementing algorithms Implementing new algorithms/estimators distances Distances package labels May 13, 2023
@hadifawaz1999
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I think it should be instead of #159 , unless someone already started to work on it, if not then yeah we can skip it and go directly to PF2

@GuiArcencio
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GuiArcencio commented May 16, 2023 •
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I can work on this since I've implemented PF before, I could have a working draft around next week or so. One possible issue for PF2 is that it requires different cost functions for DTW calculations (||a - b||^0.5, 1, or 2), which I think are fixed in our implementations.

@itsdivya1309 itsdivya1309 mentioned this issue Jul 31, 2024
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@itsdivya1309 itsdivya1309 linked a pull request Aug 15, 2024 that will close this issue
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classification Classification package distances Distances package enhancement New feature, improvement request or other non-bug code enhancement implementing algorithms Implementing new algorithms/estimators
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[ENH] Implement Proximity Forest 2.0 classifier using aeon distances itsdivya1309/aeon
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@TonyBagnall @GuiArcencio @hadifawaz1999