3 papers
cs.AI2026
BALAR : A Bayesian Agentic Loop for Active Reasoning
Aymen Echarghaoui, Dongxia Wu, Emily B. Fox
Large language models increasingly operate in interactive settings where solving a task requires multiple rounds of information exchange with a user. However, most current systems…
stat.ME2026
Univariate-Guided Interaction Modeling
Aymen Echarghaoui, Robert Tibshirani
We propose a procedure for sparse regression with pairwise interactions, by generalizing the Univariate Guided Sparse Regression (UniLasso) methodology. A central contribution is o…
cs.LG2025
Intelligently Weighting Multiple Reference Models for Direct Preference Optimization of LLMs
Skyler Wu, Aymen Echarghaoui
Fine-tuning is integral for aligning large language models (LLMs) with human preferences. Multiple-Reference Preference Optimization (MRPO) builds on Direct Preference Optimization…