collaborators

7 papers

cs.AI2026

Answer-Distribution Trajectories: A Stochastic-Dynamics View of LLM Reasoning

Mar Gonzàlez I Català, Haitz Sáez de Ocáriz Borde, Davide Murari +3

Chain-of-thought reasoning provides a structured computation between a model's input and final answer. Yet it is often evaluated through endpoint accuracy, which ignores the path t…

cs.AI2026

Looped Language Models Improve Compositional Tool Calling

Andrei Cristian Popescu, Haitz Sáez de Ocáriz Borde, Pietro Liò

Looped language models have shown promising results on reasoning benchmarks, yet their potential for agentic tool use remains largely unexplored. We study this question in composit…

cs.LG2026

Adaptive Depth in Looped Transformers: Diagnosing Learned Halting Gates and Trajectory Readouts

Andrei Cristian Popescu, Haitz Sáez de Ocáriz Borde, Pietro Liò

Looped Transformers increase test-time computation by repeatedly applying a shared recurrent block. Learned halting objectives in looped Transformers typically use a single exit di…

cs.AI2026

Soro: A Lightweight Foundation Model and Chatbot for Tajik

Stanislav Liashkov, Haitz Sáez de Ocáriz Borde, Azizjon Azimi +3

We present Soro, a family of Tajik-specialized conversational large language models (LLMs) designed for real-world deployment under tight compute and connectivity constraints in Ta…

stat.ML2026

Classification Fields: Arbitrarily Fine Recursive Hierarchical Clustering From Few Examples

Yicen Li, Ruiyang Hong, Anastasis Kratsios +2

Classical clustering methods usually return either a finite partition of the observed data or a finite dendrogram over it. This finite-sample view is inadequate when the hierarchy…

physics.flu-dyn2026

Learning 3D Hypersonic Flow with Physics-Enhanced Neural Fields: A Case Study on the Orion Reentry Capsule

Haitz Sáez de Ocáriz Borde, Pietro Innocenzi, Flavio Savarino +2

We develop a 3D aerothermodynamic simulator for the Orion reentry capsule at hypersonic speeds, a timely case study given its role in upcoming lunar missions. The large computation…