Vector type Quantize to 2 bits

top 5% channels hold

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max / median ratio

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MSE (naive uniform)

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inner product error

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per-channel energy (|x_i|^2 averaged over 50 vectors) outlier channels (top 5%)
original coordinate values (one vector) after naive uniform quantization

Coordinate values (first 64 of 128 dims)

Per-coordinate quantization error