BCL: Bayesian In-Context Learning Framework for Information Extraction
For researchers and practitioners in information extraction, BCL provides a systematic optimization framework that improves ICL performance, though it is an incremental advancement over existing methods.
BCL introduces a Bayesian optimization framework for in-context learning in information extraction, using particle filtering to refine label representations. It achieves substantial and consistent improvements over existing methods across multiple IE tasks.
Existing information extraction (IE) tasks increasingly adopt in-context learning (ICL) with large language models. However, current approaches either show inconsistent performance across model scales or lack systematic optimization and generalizability. Building on this, we propose BCL (Bayesian In-Context Learning Framework for Information Extraction), the first optimization framework that uses particle filtering with Bayesian updates to systematically refine label representations across IE tasks. Through four steps initialization, observation, weight update, and resampling, BCL generalizes to both sequence labeling and relation classification paradigms. Extensive experiments demonstrate substantial and consistent improvements over existing approaches.