Search Results for author: Weronika Ormaniec

Found 6 papers, 2 papers with code

Fusion of Graph Neural Networks via Optimal Transport

no code implementations27 Mar 2025 Weronika Ormaniec, Michael Vollenweider, Elisa Hoskovec

Finally, we present results suggesting that model fusion using OT is harder in the case of GCNs than MLPs and that incorporating the graph structure into the process does not improve the performance of the method.

What Does It Mean to Be a Transformer? Insights from a Theoretical Hessian Analysis

1 code implementation14 Oct 2024 Weronika Ormaniec, Felix Dangel, Sidak Pal Singh

The Transformer architecture has inarguably revolutionized deep learning, overtaking classical architectures like multi-layer perceptrons (MLPs) and convolutional neural networks (CNNs).

Standardizing Structural Causal Models

1 code implementation17 Jun 2024 Weronika Ormaniec, Scott Sussex, Lars Lorch, Bernhard Schölkopf, Andreas Krause

Moreover, contrary to the post-hoc standardization of data generated by standard SCMs, we prove that linear iSCMs are less identifiable from prior knowledge on the weights and do not collapse to deterministic relationships in large systems, which may make iSCMs a useful model in causal inference beyond the benchmarking problem studied here.

Benchmarking Causal Inference

Estimating value at risk: LSTM vs. GARCH

no code implementations21 Jul 2022 Weronika Ormaniec, Marcin Pitera, Sajad Safarveisi, Thorsten Schmidt

Estimating value-at-risk on time series data with possibly heteroscedastic dynamics is a highly challenging task.

Time Series Time Series Analysis

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