Oscar Sainz

Postdoctoral Researcher in NLP

HiTZ Center - Ixa NLP Group
University of the Basque Country (UPV/EHU)

Computer Science Faculty, UPV/EHU

About Me

I am a postdoctoral researcher at the University of the Basque Country in the HiTZ center and IXA group. My research interests are focused on low-resource scenarios and particularly on low-resource Information Extraction.

I obtained my PhD at the University of the Basque Country in 2024, where I worked on zero and few-shot Information Extraction using entailment models and making LLMs learn to follow annotation guidelines.

Research Interests

Low-Resource NLP Information Extraction Large Language Models Cross-lingual Evaluation Basque NLP Data Contamination

Activities

Co-organizer of The First Data Contamination Workshop (CONDA)
4 months visiting researcher (Sep-Dec 2024) at LMU Munich with Prof. Dr. Hinrich Schütze
Active Reviewer and Area Chair for ML and NLP conferences: ICLR, *ACL (ARR), EMNLP, LREC, COLING since 2021

Awards

Outstanding Area Chair Award at AACL, 2026
Best Thesis Award by AEPIA (Asociación Española para la Inteligencia Artificial), 2025
Best Resource Paper Award at ACL 2024
Outstanding Reviewer Award at EMNLP, 2023

Students & Interns

PhD Students

Mikel Zubillaga (2024-present)

Master's Students

Aimar Sagasti (2026): Assessing Tool-Usage Capabilities of Basque Agentic RAG Systems
Ignacio Talavera (2025): Synthetic Data Generation for Sentence-level and Paragraph-level Closed Information Extraction

Undergraduate Students

Mikel Zubillaga (2023): Hizkuntzen arteko transferentzia analisia Euskarazko Informazio-Erauzketan

Interns

Yago Molina (2025)
Neil de la Fuente (2024)

Featured Publications

For more, visit my Google Scholar or Semantic Scholar page.

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