activity
20232025
most citedSetting the Right Expectations: Algorithmic Recourse Over Time

11 citations · 15 across the 7 of their papers we have counts for

collaborators

7 papers

cs.LG2025★ 1 cited

SHAP-based Explanations are Sensitive to Feature Representation

Hyunseung Hwang, Andrew Bell, Joao Fonseca +3

Local feature-based explanations are a key component of the XAI toolkit. These explanations compute feature importance values relative to an ``interpretable'' feature representatio…

cs.LG2025

Faster, Cheaper, Better: Multi-Objective Hyperparameter Optimization for LLM and RAG Systems

Matthew Barker, Andrew Bell, Evan Thomas +3

While Retrieval Augmented Generation (RAG) has emerged as a popular technique for improving Large Language Model (LLM) systems, it introduces a large number of choices, parameters…

cs.CL2025

Safeguarding Large Language Models in Real-time with Tunable Safety-Performance Trade-offs

Joao Fonseca, Andrew Bell, Julia Stoyanovich

Large Language Models (LLMs) have been shown to be susceptible to jailbreak attacks, or adversarial attacks used to illicit high risk behavior from a model. Jailbreaks have been ex…

cs.CY2024

Making Transparency Advocates: An Educational Approach Towards Better Algorithmic Transparency in Practice

Andrew Bell, Julia Stoyanovich

Concerns about the risks and harms posed by artificial intelligence (AI) have resulted in significant study into algorithmic transparency, giving rise to a sub-field known as Expla…

cs.CL2024★ 1 cited

Output Scouting: Auditing Large Language Models for Catastrophic Responses

Andrew Bell, Joao Fonseca

Recent high profile incidents in which the use of Large Language Models (LLMs) resulted in significant harm to individuals have brought about a growing interest in AI safety. One r…

cs.LG2024★ 2 cited

Fairness in Algorithmic Recourse Through the Lens of Substantive Equality of Opportunity

Andrew Bell, Joao Fonseca, Carlo Abrate +2

Algorithmic recourse -- providing recommendations to those affected negatively by the outcome of an algorithmic system on how they can take action and change that outcome -- has ga…

cs.LG2023★ 11 cited

Setting the Right Expectations: Algorithmic Recourse Over Time

Joao Fonseca, Andrew Bell, Carlo Abrate +2

Algorithmic systems are often called upon to assist in high-stakes decision making. In light of this, algorithmic recourse, the principle wherein individuals should be able to take…