3 papers
cs.FL2026
The -Chain Product: A Succinct Model of Automata (De)Composition (Extended Version)
Roberto Borelli, Davide Bresolin, Luca Geatti +2
The cascade product is a fundamental construction in automata theory, enabling hierarchical composition of automata and playing a central role in decomposition results such as the…
cs.AI2026
Refusal Before Decoding: Detecting and Exploiting Refusal Signals in Intermediate LLM Activations
Matteo Gioele Collu, Riccardo Conte, Alberto Giaretta +4
In this paper, we investigate whether refusal behavior can be predicted from LLM intermediate activations before decoding using linear probes trained on residual stream activations…
cs.LG2026
Iterative In-Context Learning to Enhance LLMs Abstract Reasoning: The Case-Study of Algebraic Tasks
Stefano Fioravanti, Matteo Zavatteri, Roberto Confalonieri +4
LLMs face significant challenges in systematic generalization, particularly when dealing with reasoning tasks requiring compositional rules and handling out-of-distribution example…