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Alexandra Hotti

3 accepted papers

2024

Efficient Mixture Learning in Black-Box Variational Inference

ICML 2024poster

Mixture variational distributions in black box variational inference (BBVI) have demonstrated impressive results in challenging density estimation tasks. However, currently scaling the number of mixture components can lead to a linear increase in the number of learnable parameters and a quadratic in…

2024

Indirectly Parameterized Concrete Autoencoders

ICML 2024poster

Feature selection is a crucial task in settings where data is high-dimensional or acquiring the full set of features is costly. Recent developments in neural network-based embedded feature selection show promising results across a wide range of applications. Concrete Autoencoders (CAEs), considered…

2023

Cooperation in the Latent Space: The Benefits of Adding Mixture Components in Variational Autoencoders

ICML 2023poster

In this paper, we show how the mixture components cooperate when they jointly adapt to maximize the ELBO. We build upon recent advances in the multiple and adaptive importance sampling literature. We then model the mixture components using separate encoder networks and show empirically that the ELBO…