Embeddings of Label Components for Sequence Labeling: A Case Study of Fine-grained Named Entity Recognition

Autor:	Kato, Takuma, Abe, Kaori, Ouchi, Hiroki, Miyawaki, Shumpei, Suzuki, Jun, Inui, Kentaro
Rok vydání:	2020
Předmět:	Computer Science - Computation and Language
Druh dokumentu:	Working Paper
Popis:	In general, the labels used in sequence labeling consist of different types of elements. For example, IOB-format entity labels, such as B-Person and I-Person, can be decomposed into span (B and I) and type information (Person). However, while most sequence labeling models do not consider such label components, the shared components across labels, such as Person, can be beneficial for label prediction. In this work, we propose to integrate label component information as embeddings into models. Through experiments on English and Japanese fine-grained named entity recognition, we demonstrate that the proposed method improves performance, especially for instances with low-frequency labels. Comment: Accepted by ACL SRW 2020
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2006.01372 Zobrazit plný text záznamu View this record from Arxiv