Search Results for author: Catarina Belém

Found 6 papers, 2 papers with code

FairGBM: Gradient Boosting with Fairness Constraints

1 code implementation16 Sep 2022 André F Cruz, Catarina Belém, Sérgio Jesus, João Bravo, Pedro Saleiro, Pedro Bizarro

Tabular data is prevalent in many high-stakes domains, such as financial services or public policy.

Decision Making Fairness

Weakly Supervised Multi-task Learning for Concept-based Explainability

no code implementations26 Apr 2021 Catarina Belém, Vladimir Balayan, Pedro Saleiro, Pedro Bizarro

In ML-aided decision-making tasks, such as fraud detection or medical diagnosis, the human-in-the-loop, usually a domain-expert without technical ML knowledge, prefers high-level concept-based explanations instead of low-level explanations based on model features.

Decision Making Fraud Detection +2

Promoting Fairness through Hyperparameter Optimization

2 code implementations23 Mar 2021 André F. Cruz, Pedro Saleiro, Catarina Belém, Carlos Soares, Pedro Bizarro

Considerable research effort has been guided towards algorithmic fairness but real-world adoption of bias reduction techniques is still scarce.

Fairness Fraud Detection +1

How can I choose an explainer? An Application-grounded Evaluation of Post-hoc Explanations

no code implementations21 Jan 2021 Sérgio Jesus, Catarina Belém, Vladimir Balayan, João Bento, Pedro Saleiro, Pedro Bizarro, João Gama

We conducted an experiment following XAI Test to evaluate three popular post-hoc explanation methods -- LIME, SHAP, and TreeInterpreter -- on a real-world fraud detection task, with real data, a deployed ML model, and fraud analysts.

Decision Making Explainable Artificial Intelligence (XAI) +1

Teaching the Machine to Explain Itself using Domain Knowledge

no code implementations27 Nov 2020 Vladimir Balayan, Pedro Saleiro, Catarina Belém, Ludwig Krippahl, Pedro Bizarro

Moreover, we collect the domain feedback from a pool of certified experts and use it to ameliorate the model (human teaching), hence promoting seamless and better suited explanations.

Decision Making Fraud Detection

A Bandit-Based Algorithm for Fairness-Aware Hyperparameter Optimization

no code implementations7 Oct 2020 André F. Cruz, Pedro Saleiro, Catarina Belém, Carlos Soares, Pedro Bizarro

Hence, coupled with the lack of tools for ML practitioners, real-world adoption of bias reduction methods is still scarce.

Decision Making Fairness +2

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