Search Results for author: Nicola Branchini

Found 4 papers, 2 papers with code

Causal Optimal Transport of Abstractions

1 code implementation13 Dec 2023 Yorgos Felekis, Fabio Massimo Zennaro, Nicola Branchini, Theodoros Damoulas

Causal abstraction (CA) theory establishes formal criteria for relating multiple structural causal models (SCMs) at different levels of granularity by defining maps between them.

Data Augmentation

Adaptive importance sampling for heavy-tailed distributions via $α$-divergence minimization

1 code implementation25 Oct 2023 Thomas Guilmeau, Nicola Branchini, Emilie Chouzenoux, Víctor Elvira

We then show that the $\alpha$-divergence can be approximated by a generalized notion of effective sample size and leverage this new perspective to adapt the tail parameter with Bayesian optimization.

Bayesian Optimization Variational Inference

Causal Entropy Optimization

no code implementations23 Aug 2022 Nicola Branchini, Virginia Aglietti, Neil Dhir, Theodoros Damoulas

We study the problem of globally optimizing the causal effect on a target variable of an unknown causal graph in which interventions can be performed.

Bayesian Optimization

Optimized Auxiliary Particle Filters: adapting mixture proposals via convex optimization

no code implementations18 Nov 2020 Nicola Branchini, Víctor Elvira

In this work, we propose optimized auxiliary particle filters, a framework where the traditional APF auxiliary variables are interpreted as weights in an importance sampling mixture proposal.

Computation

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