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abstract indexed · arXiv 2609.27018 · updated 2026-10-18

GeoRVQ: Decoder-aware geometry for residual-token prediction in physiological signals

First page of GeoRVQ: Decoder-aware geometry for residual-token prediction in physiological signals
From the original paper · arXiv 2609.27018Page 1. Select the image to read the PDF.

GeoRVQ replaces uniform cross-entropy over RVQ tokens with a coarse-to-fine masked-token objective weighted by decoder-induced distortion costs, using a frozen waveform decoder to build geometry-aware soft targets. It costs an additional decoder-response evaluation per token or code substitution during training plus the machinery of a pretrained RVQ tokenizer and decoder, with no reported inference-time overhead. It can fail if the frozen decoder's local cost estimates misrank true decoded error (the reported Spearman correlation is .85, not perfect), and gains may not transfer beyond the three evaluated physiological datasets or to non-waveform modalities.

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research area
quantization
technical change
Decoder-aware geometry-aware RVQ token modeling
published
2026-09-22

The method targets a narrow physiological-signal setting with domain-specific tokenizer prerequisites and only descriptive aggregate evidence, so it is relevant to track but not a general production adoption for a constrained-infrastructure team.

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  1. claim 01Paperraft inference
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    GeoRVQ replaces uniform cross-entropy over RVQ tokens with a coarse-to-fine masked-token objective weighted by decoder-induced distortion costs, using a frozen waveform decoder to build geometry-aware soft targets. It costs an additional decoder-response evaluation per token or code substitution during training plus the machinery of a pretrained RVQ tokenizer and decoder, with no reported inference-time overhead. It can fail if the frozen decoder's local cost estimates misrank true decoded error (the reported Spearman correlation is .85, not perfect), and gains may not transfer beyond the three evaluated physiological datasets or to non-waveform modalities.

    This is a Paperraft inference. It is not pinned to a verified PDF passage.

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  2. claim 02Paperraft inference

    Reduces decoded distance from .606 to .393 and raises R-peak F1 from .784 to .837 under matched conditions; exact token accuracy rises only from .133 to .143.

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