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Alexander Theus

3 accepted papers

2026

How does the optimizer implicitly bias the model merging loss landscape?

ICLR 2026poster

Model merging methods combine models with different capabilities into a single one while maintaining the same inference cost. Two popular approaches are lin- ear interpolation, which linearly interpolates between model weights, and task arithmetic, which combines task vectors obtained by the differe…

Cited by 2Source ↗Scholar ↗
2025

Generalized Linear Mode Connectivity for Transformers

NeurIPS 2025oral

Understanding the geometry of neural network loss landscapes is a central question in deep learning, with implications for generalization and optimization. A striking phenomenon is $\textit{linear mode connectivity}$ (LMC), where independently trained models can be connected by low- or zero-barrier…

Cited by 0Source ↗Scholar ↗
2024

Towards Meta-Pruning via Optimal Transport

ICLR 2024spotlight

Structural pruning of neural networks conventionally relies on identifying and discarding less important neurons, a practice often resulting in significant accuracy loss that necessitates subsequent fine-tuning efforts. This paper introduces a novel approach named Intra-Fusion, challenging this prev…