Latent-Autoregressive GP-VAE Language Model

Fuente: arXiv
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Autor principal: Ruffenach, Yves
Formato: Preprint
Publicado: 2025
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author Ruffenach, Yves
author_facet Ruffenach, Yves
contents We investigate a fully Latent AutoRegressive scheme based on a Gaussian Process (GP) integrated into a Variational Autoencoder (VAE). In this setting, sequential dynamics are transferred from the observation space to a continuous latent space, while linguistic generation remains parallel through a non-autoregressive decoder. We present a complete methodological formulation, including a causal GP prior, a structured amortized posterior, and a training protocol based on a regularized ELBO. Empirical evaluation, conducted within a deliberately constrained proof-of-concept (POC) framework, shows that the model can be trained stably and that the sequential and parallel sampling variants exhibit consistent behavior. Overall, the results suggest that part of the temporal structure in a language model can be supported by the probabilistic geometry of the latent space rather than by explicit neural operations.
format Preprint
id arxiv_https___arxiv_org_abs_2512_09535
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Latent-Autoregressive GP-VAE Language Model
Ruffenach, Yves
Machine Learning
60G15, 62M10, 68T07
I.2.6; I.2.7
We investigate a fully Latent AutoRegressive scheme based on a Gaussian Process (GP) integrated into a Variational Autoencoder (VAE). In this setting, sequential dynamics are transferred from the observation space to a continuous latent space, while linguistic generation remains parallel through a non-autoregressive decoder. We present a complete methodological formulation, including a causal GP prior, a structured amortized posterior, and a training protocol based on a regularized ELBO. Empirical evaluation, conducted within a deliberately constrained proof-of-concept (POC) framework, shows that the model can be trained stably and that the sequential and parallel sampling variants exhibit consistent behavior. Overall, the results suggest that part of the temporal structure in a language model can be supported by the probabilistic geometry of the latent space rather than by explicit neural operations.
title Latent-Autoregressive GP-VAE Language Model
topic Machine Learning
60G15, 62M10, 68T07
I.2.6; I.2.7
url https://arxiv.org/abs/2512.09535