Talk:Pyramid vector quantization: Difference between revisions
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{{WikiProject Computing |class=start |importance=low |software=y |software-importance=Low}} |
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== Improving uniformity by coordinate-wise power before projection == |
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PVQ point density has characteristic nonuniformities - I have worked on improving it by adding some deformation, and just coordinate-wise power before applying projection works quite well, allows to reduce mean-squared quantization error by ~10% ( https://arxiv.org/pdf/1705.05285 ) - might be worth adding with image like attached: |
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[[File:PVQ power projection.png|thumb|600px|Improving uniformity of PVQ point distribution by coordinate-wise power <math>\vec{p} \to \vec{(p_i^w)_i}</math> of the vector before projection. Diagram presents constellations for <math>N=3</math> dimensions and written <math>K=11, 16, 23, 32</math> L1-norm.]] |
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--[[User:Jarek Duda|Jarek Duda]] ([[User talk:Jarek Duda|talk]]) 13:42, 15 May 2021 (UTC) |
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Revision as of 13:42, 15 May 2021
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Improving uniformity by coordinate-wise power before projection
PVQ point density has characteristic nonuniformities - I have worked on improving it by adding some deformation, and just coordinate-wise power before applying projection works quite well, allows to reduce mean-squared quantization error by ~10% ( https://arxiv.org/pdf/1705.05285 ) - might be worth adding with image like attached:
