Search Results for author: José Pombal

Found 7 papers, 3 papers with code

Tower: An Open Multilingual Large Language Model for Translation-Related Tasks

1 code implementation27 Feb 2024 Duarte M. Alves, José Pombal, Nuno M. Guerreiro, Pedro H. Martins, João Alves, Amin Farajian, Ben Peters, Ricardo Rei, Patrick Fernandes, Sweta Agrawal, Pierre Colombo, José G. C. de Souza, André F. T. Martins

While general-purpose large language models (LLMs) demonstrate proficiency on multiple tasks within the domain of translation, approaches based on open LLMs are competitive only when specializing on a single task.

Language Modelling Large Language Model +1

Scaling up COMETKIWI: Unbabel-IST 2023 Submission for the Quality Estimation Shared Task

1 code implementation21 Sep 2023 Ricardo Rei, Nuno M. Guerreiro, José Pombal, Daan van Stigt, Marcos Treviso, Luisa Coheur, José G. C. de Souza, André F. T. Martins

Our team participated on all tasks: sentence- and word-level quality prediction (task 1) and fine-grained error span detection (task 2).

Sentence Task 2

Fairness-Aware Data Valuation for Supervised Learning

no code implementations29 Mar 2023 José Pombal, Pedro Saleiro, Mário A. T. Figueiredo, Pedro Bizarro

Data valuation is a ML field that studies the value of training instances towards a given predictive task.

Active Learning Data Valuation +1

Turning the Tables: Biased, Imbalanced, Dynamic Tabular Datasets for ML Evaluation

2 code implementations24 Nov 2022 Sérgio Jesus, José Pombal, Duarte Alves, André Cruz, Pedro Saleiro, Rita P. Ribeiro, João Gama, Pedro Bizarro

The suite was generated by applying state-of-the-art tabular data generation techniques on an anonymized, real-world bank account opening fraud detection dataset.

Fairness Fraud Detection +1

Understanding Unfairness in Fraud Detection through Model and Data Bias Interactions

no code implementations13 Jul 2022 José Pombal, André F. Cruz, João Bravo, Pedro Saleiro, Mário A. T. Figueiredo, Pedro Bizarro

The unparalleled ability of machine learning algorithms to learn patterns from data also enables them to incorporate biases embedded within.

Decision Making Fairness +1

Prisoners of Their Own Devices: How Models Induce Data Bias in Performative Prediction

no code implementations27 Jun 2022 José Pombal, Pedro Saleiro, Mário A. T. Figueiredo, Pedro Bizarro

The unparalleled ability of machine learning algorithms to learn patterns from data also enables them to incorporate biases embedded within.

Fairness Fraud Detection

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