Search Results for author: Michael Pearce

Found 10 papers, 5 papers with code

Sparse Autoencoders Do Not Find Canonical Units of Analysis

no code implementations7 Feb 2025 Patrick Leask, Bart Bussmann, Michael Pearce, Joseph Bloom, Curt Tigges, Noura Al Moubayed, Lee Sharkey, Neel Nanda

Using meta-SAEs -- SAEs trained on the decoder matrix of another SAE -- we find that latents in SAEs often decompose into combinations of latents from a smaller SAE, showing that larger SAE latents are not atomic.

Efficient computation of the Knowledge Gradient for Bayesian Optimization

no code implementations30 Sep 2022 Juan Ungredda, Michael Pearce, Juergen Branke

Bayesian optimization is a powerful collection of methods for optimizing stochastic expensive black box functions.

Bayesian Optimization

A Unified Statistical Learning Model for Rankings and Scores with Application to Grant Panel Review

1 code implementation7 Jan 2022 Michael Pearce, Elena A. Erosheva

We propose the Mallows-Binomial model to close this gap, which combines a Mallows' $\phi$ ranking model with Binomial score models through shared parameters that quantify object quality, a consensus ranking, and the level of consensus between judges.

Factorized Gaussian Process Variational Autoencoders

1 code implementation pproximateinference AABI Symposium 2021 Metod Jazbec, Michael Pearce, Vincent Fortuin

Variational autoencoders often assume isotropic Gaussian priors and mean-field posteriors, hence do not exploit structure in scenarios where we may expect similarity or consistency across latent variables.

Scalable Gaussian Process Variational Autoencoders

1 code implementation26 Oct 2020 Metod Jazbec, Matthew Ashman, Vincent Fortuin, Michael Pearce, Stephan Mandt, Gunnar Rätsch

Conventional variational autoencoders fail in modeling correlations between data points due to their use of factorized priors.

Bayesian Optimisation vs. Input Uncertainty Reduction

no code implementations31 May 2020 Juan Ungredda, Michael Pearce, Juergen Branke

Particularly when performing simulation optimisation to find an optimal solution, the uncertainty in the inputs significantly affects the quality of the found solution.

Bayesian Optimisation

Bayesian Optimization Allowing for Common Random Numbers

no code implementations21 Oct 2019 Michael Pearce, Matthias Poloczek, Juergen Branke

Bayesian optimization is a powerful tool for expensive stochastic black-box optimization problems such as simulation-based optimization or machine learning hyperparameter tuning.

Bayesian Optimization BIG-bench Machine Learning

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