Structure-Aware Decoding Mechanisms for Complex Entity Extraction with Large-Scale Language Models
This addresses the challenge of complex entity extraction for natural language processing applications, representing a novel method for a known bottleneck rather than a fundamental paradigm shift.
This paper tackles the problem of maintaining semantic integrity and structural consistency in nested and overlapping entity extraction tasks by proposing a structure-aware decoding method based on large language models. The method achieves significant improvements in Accuracy, Precision, Recall, and F1-Score on the ACE 2005 dataset, particularly excelling in nested and overlapping entity recognition with stronger boundary localization and structural modeling capabilities.
This paper proposes a structure-aware decoding method based on large language models to address the difficulty of traditional approaches in maintaining both semantic integrity and structural consistency in nested and overlapping entity extraction tasks. The method introduces a candidate span generation mechanism and structured attention modeling to achieve unified modeling of entity boundaries, hierarchical relationships, and cross-dependencies. The model first uses a pretrained language model to obtain context-aware semantic representations, then captures multi-granular entity span features through candidate representation combinations, and introduces hierarchical structural constraints during decoding to ensure consistency between semantics and structure. To enhance stability in complex scenarios, the model jointly optimizes classification loss and structural consistency loss, maintaining high recognition accuracy under multi-entity co-occurrence and long-sentence dependency conditions. Experiments conducted on the ACE 2005 dataset demonstrate significant improvements in Accuracy, Precision, Recall, and F1-Score, particularly in nested and overlapping entity recognition, where the model shows stronger boundary localization and structural modeling capability. This study verifies the effectiveness of structure-aware decoding in complex semantic extraction tasks, provides a new perspective for developing language models with hierarchical understanding, and establishes a methodological foundation for high-precision information extraction.