4 papers
TERMS-Bench: Diagnosing LLM Negotiation Agents Beyond Deal Rate
Erica Zhang, Fangzhao Zhang, Aneesh Pappu +5
Negotiation is a central mechanism of economic exchange, shaping markets, procurement, labor agreements, and resource allocation. It is also a canonical testbed for agentic languag…
Robust Offline Policy Learning with Observational Data from Multiple Sources
Aldo Gael Carranza, Susan Athey
We consider the problem of using observational bandit feedback data from multiple heterogeneous data sources to learn a personalized decision policy that robustly generalizes acros…
Data-driven Error Estimation: Excess Risk Bounds without Class Complexity as Input
Sanath Kumar Krishnamurthy, Anna Lyubarskaja, Emma Brunskill +1
Constructing confidence intervals that are simultaneously valid across a class of estimates is central to tasks such as multiple mean estimation, generalization guarantees, and ada…
Towards Costless Model Selection in Contextual Bandits: A Bias-Variance Perspective
Sanath Kumar Krishnamurthy, Adrienne Margaret Propp, Susan Athey
Model selection in supervised learning provides costless guarantees as if the model that best balances bias and variance was known a priori. We study the feasibility of similar gua…