activity
20182026
most citedMeasuring and Reducing LLM Hallucination without Gold-Standard Answers

9 citations · 19 across the 16 of their papers we have counts for

collaborators

18 papers

cs.CV2026

Evian: Towards Explainable Visual Instruction-tuning Data Auditing

Zimu Jia, Mingjie Xu, Andrew Estornell +1

The efficacy of Large Vision-Language Models (LVLMs) is critically dependent on the quality of their training data, requiring a precise balance between visual fidelity and instruct…

cs.LG2025

Any-Depth Alignment: Unlocking Innate Safety Alignment of LLMs to Any-Depth

Jiawei Zhang, Andrew Estornell, David D. Baek +2

Large Language Models (LLMs) exhibit strong but shallow alignment: they directly refuse harmful queries when a refusal is expected at the very start of an assistant turn, yet this…

cs.CL2025

AgenticMath: Enhancing LLM Reasoning via Agentic-based Math Data Generation

Xianyang Liu, Yilin Liu, Shuai Wang +5

The creation of high-quality datasets to improve Large Language Model (LLM) reasoning remains a significant challenge, as current methods often suffer from generating low-quality/i…

cs.MA2025

How to Train a Leader: Hierarchical Reasoning in Multi-Agent LLMs

Andrew Estornell, Jean-Francois Ton, Muhammad Faaiz Taufiq +1

Large Language Models (LLMs) have achieved strong performance on a wide range of complex reasoning tasks, yet further gains are often possible by leveraging the complementary stren…

cs.CV2025

Better Reasoning with Less Data: Enhancing VLMs Through Unified Modality Scoring

Mingjie Xu, Andrew Estornell, Hongzheng Yang +4

The application of visual instruction tuning and other post-training techniques has significantly enhanced the capabilities of Large Language Models (LLMs) in visual understanding,…

cs.GT2025

To Give or Not to Give? The Impacts of Strategically Withheld Recourse

Yatong Chen, Andrew Estornell, Yevgeniy Vorobeychik +1

Individuals often aim to reverse undesired outcomes in interactions with automated systems, like loan denials, by either implementing system-recommended actions (recourse), or mani…

cs.CL2024★ 1 cited

ACC-Collab: An Actor-Critic Approach to Multi-Agent LLM Collaboration

Andrew Estornell, Jean-Francois Ton, Yuanshun Yao +1

Large language models (LLMs) have demonstrated a remarkable ability to serve as general-purpose tools for various language-based tasks. Recent works have demonstrated that the effi…

cs.LG2024★ 1 cited

Adaptive Recruitment Resource Allocation to Improve Cohort Representativeness in Participatory Biomedical Datasets

Victor Borza, Andrew Estornell, Ellen Wright Clayton +4

Large participatory biomedical studies, studies that recruit individuals to join a dataset, are gaining popularity and investment, especially for analysis by modern AI methods. Bec…

cs.IR2024

User-Creator Feature Polarization in Recommender Systems with Dual Influence

Tao Lin, Kun Jin, Andrew Estornell +3

Recommender systems serve the dual purpose of presenting relevant content to users and helping content creators reach their target audience. The dual nature of these systems natura…

cs.LG2024

Dataset Representativeness and Downstream Task Fairness

Victor Borza, Andrew Estornell, Chien-Ju Ho +2

Our society collects data on people for a wide range of applications, from building a census for policy evaluation to running meaningful clinical trials. To collect data, we typica…

q-fin.ST2024★ 1 cited

Predicting Customer Goals in Financial Institution Services: A Data-Driven LSTM Approach

Andrew Estornell, Stylianos Loukas Vasileiou, William Yeoh +2

In today's competitive financial landscape, understanding and anticipating customer goals is crucial for institutions to deliver a personalized and optimized user experience. This…

cs.CL2024★ 9 cited

Measuring and Reducing LLM Hallucination without Gold-Standard Answers

Jiaheng Wei, Yuanshun Yao, Jean-Francois Ton +3

LLM hallucination, i.e. generating factually incorrect yet seemingly convincing answers, is currently a major threat to the trustworthiness and reliability of LLMs. The first step…

cs.GT2022★ 1 cited

Manipulating Elections by Changing Voter Perceptions

Junlin Wu, Andrew Estornell, Lecheng Kong +1

The integrity of elections is central to democratic systems. However, a myriad of malicious actors aspire to influence election outcomes for financial or political benefit. A commo…

cs.MA2021★ 3 cited

Unfairness Despite Awareness: Group-Fair Classification with Strategic Agents

Andrew Estornell, Sanmay Das, Yang Liu +1

The use of algorithmic decision making systems in domains which impact the financial, social, and political well-being of people has created a demand for these decision making syst…

cs.MA2020★ 1 cited

Incentivizing Truthfulness Through Audits in Strategic Classification

Andrew Estornell, Sanmay Das, Yevgeniy Vorobeychik

In many societal resource allocation domains, machine learning methods are increasingly used to either score or rank agents in order to decide which ones should receive either reso…

cs.GT2020★ 2 cited

Election Control by Manipulating Issue Significance

Andrew Estornell, Sanmay Das, Edith Elkind +1

Integrity of elections is vital to democratic systems, but it is frequently threatened by malicious actors. The study of algorithmic complexity of the problem of manipulating elect…

cs.AI2019

Deception through Half-Truths

Andrew Estornell, Sanmay Das, Yevgeniy Vorobeychik

Deception is a fundamental issue across a diverse array of settings, from cybersecurity, where decoys (e.g., honeypots) are an important tool, to politics that can feature politica…

math.RA2018

PBW deformations of quadratic monomial algebras

Zachary Cline, Andrew Estornell, Chelsea Walton +1

A result of Braverman and Gaitsgory from 1996 gives necessary and sufficient conditions for a filtered algebra to be a Poincaré-Birkhoff-Witt (PBW) deformation of a Koszul algebra.…