Entity and relationship extraction based on span contribution evaluation and focusing framework

Qibin Li, Nianmin Yao, Nai Zhou, Jian Zhao

Abstract: Highlights•Proposed CEFF for joint entity and relation extraction in information extraction.•Introduces a novel approach addressing non-target spans’ impact on model training.•Efficiency rises as training costs drop and effectiveness improves.•Achieves state-of-the-art results on four benchmark datasets.