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Variable-rate discrete representation learning

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arxiv 2103.06089 v1 pith:EOQPCTCF submitted 2021-03-10 cs.LG cs.CLcs.SDeess.AS

Variable-rate discrete representation learning

classification cs.LG cs.CLcs.SDeess.AS
keywords signalsspeechdiscreteevent-basedinformationlearningrepresentationrepresentations
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Semantically meaningful information content in perceptual signals is usually unevenly distributed. In speech signals for example, there are often many silences, and the speed of pronunciation can vary considerably. In this work, we propose slow autoencoders (SlowAEs) for unsupervised learning of high-level variable-rate discrete representations of sequences, and apply them to speech. We show that the resulting event-based representations automatically grow or shrink depending on the density of salient information in the input signals, while still allowing for faithful signal reconstruction. We develop run-length Transformers (RLTs) for event-based representation modelling and use them to construct language models in the speech domain, which are able to generate grammatical and semantically coherent utterances and continuations.

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Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. FlexiSLM: A Dynamic and Controllable Frame Rate Spoken Language Model

    cs.SD 2026-06 unverdicted novelty 7.0

    FlexiSLM is the first spoken language model supporting dynamic and controllable frame rates on speech input and output, outperforming fixed-rate 7B models at high quality and enabling faster inference at lower rates l...

  2. DTM-Codec: Dynamic Token Masking for VFR Speech Coding with Efficient Boundary Selection

    eess.AS 2026-06 unverdicted novelty 7.0

    DTM-Codec achieves better reconstruction quality and intelligibility than fixed-frame-rate neural speech codecs at matched total bitrate via dynamic token masking and Path Length Equalization for variable frame rates.

  3. Finite Scalar Quantization: VQ-VAE Made Simple

    cs.CV 2023-09 conditional novelty 7.0

    Finite scalar quantization simplifies VQ-VAE latents by independently rounding a few dimensions to fixed levels, producing an equivalent-sized implicit codebook with competitive performance and no collapse.

  4. Continuous diffusion for categorical data

    cs.CL 2022-11 unverdicted novelty 5.0

    The paper proposes CDCD, a continuous-time and continuous-space diffusion framework for categorical data, and reports results on language modeling tasks.