activity
20212026
most citedProjections of Model Spaces for Latent Graph Inference

3 citations · 6 across the 15 of their papers we have counts for

collaborators

16 papers

cs.LG2026

Evaluating Open-Weight E-Commerce Agents with Environment-Grounded Verification

Nimit Shah, Haitz Sáez de Ocáriz Borde

A shopping conversation has many routes to the same cart, and a task-success rate reduces all of them to one score. We build a deterministic and reproducible e-commerce environment…

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…

cs.LG2024

Metric Learning for Clifford Group Equivariant Neural Networks

Riccardo Ali, Paulina Kulytė, Haitz Sáez de Ocáriz Borde +1

Clifford Group Equivariant Neural Networks (CGENNs) leverage Clifford algebras and multivectors as an alternative approach to incorporating group equivariance to ensure symmetry co…

cs.RO2024

DreamUp3D: Object-Centric Generative Models for Single-View 3D Scene Understanding and Real-to-Sim Transfer

Yizhe Wu, Haitz Sáez de Ocáriz Borde, Jack Collins +2

3D scene understanding for robotic applications exhibits a unique set of requirements including real-time inference, object-centric latent representation learning, accurate 6D pose…

cs.LG2023★ 1 cited

Neural Latent Geometry Search: Product Manifold Inference via Gromov-Hausdorff-Informed Bayesian Optimization

Haitz Saez de Ocariz Borde, Alvaro Arroyo, Ismael Morales +2

Recent research indicates that the performance of machine learning models can be improved by aligning the geometry of the latent space with the underlying data structure. Rather th…

cs.LG2023

Closed-Form Diffusion Models

Christopher Scarvelis, Haitz Sáez de Ocáriz Borde, Justin Solomon

Score-based generative models (SGMs) sample from a target distribution by iteratively transforming noise using the score function of the perturbed target. For any finite training s…

cs.LG2023

Gromov-Hausdorff Distances for Comparing Product Manifolds of Model Spaces

Haitz Saez de Ocariz Borde, Alvaro Arroyo, Ismael Morales +2

Recent studies propose enhancing machine learning models by aligning the geometric characteristics of the latent space with the underlying data structure. Instead of relying solely…

cs.LG2023★ 3 cited

Projections of Model Spaces for Latent Graph Inference

Haitz Sáez de Ocáriz Borde, Álvaro Arroyo, Ingmar Posner

Graph Neural Networks leverage the connectivity structure of graphs as an inductive bias. Latent graph inference focuses on learning an adequate graph structure to diffuse informat…

cs.LG2022★ 1 cited

Latent Graph Inference using Product Manifolds

Haitz Sáez de Ocáriz Borde, Anees Kazi, Federico Barbero +1

Graph Neural Networks usually rely on the assumption that the graph topology is available to the network as well as optimal for the downstream task. Latent graph inference allows m…

cs.LG2022★ 1 cited

Graph Neural Network Expressivity and Meta-Learning for Molecular Property Regression

Haitz Sáez de Ocáriz Borde, Federico Barbero

We demonstrate the applicability of model-agnostic algorithms for meta-learning, specifically Reptile, to GNN models in molecular regression tasks. Using meta-learning we are able…

cs.LG2021

Latent Space based Memory Replay for Continual Learning in Artificial Neural Networks

Haitz Sáez de Ocáriz Borde

Memory replay may be key to learning in biological brains, which manage to learn new tasks continually without catastrophically interfering with previous knowledge. On the other ha…