Search Results for author: Tim R. Davidson

Found 6 papers, 5 papers with code

Self-Recognition in Language Models

1 code implementation9 Jul 2024 Tim R. Davidson, Viacheslav Surkov, Veniamin Veselovsky, Giuseppe Russo, Robert West, Caglar Gulcehre

Instead, our results suggest that given a set of alternatives, LMs seek to pick the "best" answer, regardless of its origin.

Multiple-choice

Increasing Expressivity of a Hyperspherical VAE

no code implementations7 Oct 2019 Tim R. Davidson, Jakub M. Tomczak, Efstratios Gavves

Learning suitable latent representations for observed, high-dimensional data is an important research topic underlying many recent advances in machine learning.

Reparameterizing Distributions on Lie Groups

1 code implementation7 Mar 2019 Luca Falorsi, Pim de Haan, Tim R. Davidson, Patrick Forré

Unfortunately, this research has primarily focused on distributions defined in Euclidean space, ruling out the usage of one of the most influential class of spaces with non-trivial topologies: Lie groups.

Pose Estimation

Explorations in Homeomorphic Variational Auto-Encoding

1 code implementation12 Jul 2018 Luca Falorsi, Pim de Haan, Tim R. Davidson, Nicola De Cao, Maurice Weiler, Patrick Forré, Taco S. Cohen

Our experiments show that choosing manifold-valued latent variables that match the topology of the latent data manifold, is crucial to preserve the topological structure and learn a well-behaved latent space.

Hyperspherical Variational Auto-Encoders

9 code implementations3 Apr 2018 Tim R. Davidson, Luca Falorsi, Nicola De Cao, Thomas Kipf, Jakub M. Tomczak

But although the default choice of a Gaussian distribution for both the prior and posterior represents a mathematically convenient distribution often leading to competitive results, we show that this parameterization fails to model data with a latent hyperspherical structure.

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