Home

Ph.D. graduate from the UPC, where I worked in the INTERACT ERC research project under the supervision of Ariadna Quattoni. My research focused on analyzing text representations in transformer-based models, with a particular interest in leveraging these representations for low-annotation settings, including semi-supervised approaches.

Publications

Papers

• Do Prompts Reshape Representations? An Empirical Study of Prompting Effects on Embeddings
  Cesar Gonzalez-Gutierrez, Dirk Hovy
  arXiv Preprint 2025

• Domain Pre-training Impact on Representations
  Cesar Gonzalez-Gutierrez, Ariadna Quattoni
  Findings EMNLP 2025 [code]

• Leveraging the Structure of Pre-trained Embeddings to Minimize Annotation Effort
  Cesar Gonzalez-Gutierrez, Ariadna Quattoni
  NAACL 2024 [code]

• Does Fine-tuning a Classifier Help in Low-budget Scenarios? Not Much
  Cesar Gonzalez-Gutierrez, Audi Primadhanty, Francesco Cazzaro, Ariadna Quattoni
  Insights 2024

• Analyzing Text Representations by Measuring Task Alignment
  Cesar Gonzalez-Gutierrez, Audi Primadhanty, Francesco Cazzaro, Ariadna Quattoni
  ACL 2023 [code]

Theses

• Analyzing and Leveraging the Structure of Pre-trained Embeddings
  PhD
  Universitat Politècnica de Catalunya 2026

• Natural Language Interfaces to Relational Databases
  MsC
  Universidad de Sevilla 2019

Software

• MaTest
  Matrix Tester for multi-valued logics.