cv
Contact Information
| Name | Esteban Rodríguez-Betancourt |
| Professional Title | PhD Student in Computer Science |
| Location | San José, Costa Rica |
| Website | https://estebarb.github.io/ |
Professional Summary
PhD student in Computer Science at Universidad de Costa Rica with research focus on natural language processing, machine learning, and distributed systems. Co-authored several papers in semantic shift analysis, word embeddings, and deep learning applications.
Experience
-
2022 - 2024 Instructor
Escuela de Ciencias de la Computación e Informática (ECCI), Universidad de Costa Rica
Teaching computer science courses at the School of Computer Science and Informatics
- Developed course materials and assignments
- Provided feedback and guidance to students
Education
-
2023 - 2028 San José, Costa Rica
-
2018 - 2022 San José, Costa Rica
-
2012 - 2014 San José, Costa Rica
Publications
-
2026 Hypersolid: Emergent Vision Representations via Short-Range Repulsion
arXiv
A recurring challenge in self-supervised learning is preventing representation collapse. Hypersolid uses short-range hard-ball repulsion to prevent local collisions, resulting in a high-separation geometric regime that preserves augmentation diversity.
-
2024 From cart to truck: meaning shift through words in English in the last two centuries
arXiv
Onomasiological study using diachronic word embeddings to explore how different words represented the same concepts over time, using historical word data from 1800 to 2000.
-
2024 Teaching SQL New Tricks: Efficient Vector Indexing with Trigrams
JAIIO, Jornadas Argentinas de Informática
Novel approach that utilizes existing trigram indexes within SQL databases to efficiently manage vector embeddings, offering a practical solution for integrating advanced vector-based queries into existing database systems.