Search Results for author: Yi-Shan Wu

Found 5 papers, 2 papers with code

Recursive PAC-Bayes: A Frequentist Approach to Sequential Prior Updates with No Information Loss

no code implementations23 May 2024 Yi-Shan Wu, Yijie Zhang, Badr-Eddine Chérief-Abdellatif, Yevgeny Seldin

While PAC-Bayes allows construction of data-informed priors, the final confidence intervals depend only on the number of points that were not used for the construction of the prior, whereas confidence information in the prior, which is related to the number of points used to construct the prior, is lost.

Probabilistic Actor-Critic: Learning to Explore with PAC-Bayes Uncertainty

no code implementations5 Feb 2024 Bahareh Tasdighi, Nicklas Werge, Yi-Shan Wu, Melih Kandemir

We introduce Probabilistic Actor-Critic (PAC), a novel reinforcement learning algorithm with improved continuous control performance thanks to its ability to mitigate the exploration-exploitation trade-off.

Continuous Control Decision Making +1

If there is no underfitting, there is no Cold Posterior Effect

no code implementations2 Oct 2023 Yijie Zhang, Yi-Shan Wu, Luis A. Ortega, Andrés R. Masegosa

The cold posterior effect (CPE) (Wenzel et al., 2020) in Bayesian deep learning shows that, for posteriors with a temperature $T<1$, the resulting posterior predictive could have better performances than the Bayesian posterior ($T=1$).

Split-kl and PAC-Bayes-split-kl Inequalities for Ternary Random Variables

1 code implementation1 Jun 2022 Yi-Shan Wu, Yevgeny Seldin

We present a new concentration of measure inequality for sums of independent bounded random variables, which we name a split-kl inequality.

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