A Survey on Knowledge-Enhanced Pre-trained Language Models

• URL: http://arxiv.org/abs/2212.13428v1
• Date: Tue, 27 Dec 2022 09:54:14 GMT
• Title: A Survey on Knowledge-Enhanced Pre-trained Language Models
• Authors: Chaoqi Zhen and Yanlei Shang and Xiangyu Liu and Yifei Li and Yong Chen and Dell Zhang
• Abstract summary: Natural Language Processing (NLP) has been revolutionized by the use of Pre-trained Language Models (PLMs) Despite setting new records in nearly every NLP task, PLMs still face a number of challenges including poor interpretability, weak reasoning capability, and the need for a lot of expensive annotated data when applied to downstream tasks. By integrating external knowledge into PLMs, textitunderlineKnowledge-underlineEnhanced underlinePre-trained underlineLanguage underlineModels
• Score: 8.54551743144995
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Natural Language Processing (NLP) has been revolutionized by the use of Pre-trained Language Models (PLMs) such as BERT. Despite setting new records in nearly every NLP task, PLMs still face a number of challenges including poor interpretability, weak reasoning capability, and the need for a lot of expensive annotated data when applied to downstream tasks. By integrating external knowledge into PLMs, \textit{\underline{K}nowledge-\underline{E}nhanced \underline{P}re-trained \underline{L}anguage \underline{M}odels} (KEPLMs) have the potential to overcome the above-mentioned limitations. In this paper, we examine KEPLMs systematically through a series of studies. Specifically, we outline the common types and different formats of knowledge to be integrated into KEPLMs, detail the existing methods for building and evaluating KEPLMS, present the applications of KEPLMs in downstream tasks, and discuss the future research directions. Researchers will benefit from this survey by gaining a quick and comprehensive overview of the latest developments in this field.

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