Research
Knowing When Not to Answer
Exploring when language models should recognize uncertainty and choose not to answer.
Explore projectOverview
This research explores selective prediction and abstention in language models, focusing on situations where producing an answer may be less reliable than recognizing uncertainty.
Problem
Language models are often expected to produce an answer even when available information is insufficient or uncertainty is high. This can result in confident but unreliable responses.
Approach
The project investigates methods for identifying uncertain predictions, evaluating model confidence, and studying when abstention can improve the reliability of AI systems.
Results
Confidence Only
AURC 0.292379
Confidence + Self-Verifier
AURC 0.309120
Confidence + Semantic V2
AURC 0.339417
Held-Out Evaluation
N = 3000