Search Results for author: Zoltán Szabó

Found 6 papers, 3 papers with code

Nyström $M$-Hilbert-Schmidt Independence Criterion

1 code implementation20 Feb 2023 Florian Kalinke, Zoltán Szabó

In order to alleviate the quadratic computational bottleneck in large-scale applications, multiple HSIC approximations have been proposed, however these estimators are restricted to $M=2$ random variables, do not extend naturally to the $M\ge 2$ case, and lack theoretical guarantees.

Causal Discovery

Discussion of `Multiscale Fisher's Independence Test for Multivariate Dependence'

no code implementations22 Jun 2022 Antonin Schrab, Wittawat Jitkrittum, Zoltán Szabó, Dino Sejdinovic, Arthur Gretton

We discuss how MultiFIT, the Multiscale Fisher's Independence Test for Multivariate Dependence proposed by Gorsky and Ma (2022), compares to existing linear-time kernel tests based on the Hilbert-Schmidt independence criterion (HSIC).

Kernel Minimum Divergence Portfolios

no code implementations15 Oct 2021 Linda Chamakh, Zoltán Szabó

Portfolio optimization is a key challenge in finance with the aim of creating portfolios matching the investors' preference.

Portfolio Optimization

Infinite-Task Learning with RKHSs

no code implementations22 May 2018 Romain Brault, Alex Lambert, Zoltán Szabó, Maxime Sangnier, Florence d'Alché-Buc

A step further consists of learning a continuum of tasks for various loss functions.

Multi-Task Learning

Kernel-Based Just-In-Time Learning for Passing Expectation Propagation Messages

1 code implementation9 Mar 2015 Wittawat Jitkrittum, Arthur Gretton, Nicolas Heess, S. M. Ali Eslami, Balaji Lakshminarayanan, Dino Sejdinovic, Zoltán Szabó

We propose an efficient nonparametric strategy for learning a message operator in expectation propagation (EP), which takes as input the set of incoming messages to a factor node, and produces an outgoing message as output.

regression

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