CofeNet: Context and Former-Label Enhanced Net for Complicated Quotation Extraction

TL;DR

CofeNet is a novel neural network model designed to improve the extraction of complex quotations from text, effectively handling variable lengths and structures of quotation components.

Contribution

The paper introduces CofeNet, a new model that enhances quotation extraction by incorporating context and former-label information, outperforming existing methods on multiple datasets.

Findings

Achieves state-of-the-art performance on three datasets.

Effectively handles complicated quotation structures.

Outperforms rule-based and sequence labeling models.

Abstract

Quotation extraction aims to extract quotations from written text. There are three components in a quotation: source refers to the holder of the quotation, cue is the trigger word(s), and content is the main body. Existing solutions for quotation extraction mainly utilize rule-based approaches and sequence labeling models. While rule-based approaches often lead to low recalls, sequence labeling models cannot well handle quotations with complicated structures. In this paper, we propose the Context and Former-Label Enhanced Net (CofeNet) for quotation extraction. CofeNet is able to extract complicated quotations with components of variable lengths and complicated structures. On two public datasets (i.e., PolNeAR and Riqua) and one proprietary dataset (i.e., PoliticsZH), we show that our CofeNet achieves state-of-the-art performance on complicated quotation extraction.