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The Life Cycle of Knowledge in Big Language Models: A Survey
Boxi Cao1,3; Hongyu Lin1; Xianpei Han1,2; Le Sun1,2
Source PublicationMachine Intelligence Research

Knowledge plays a critical role in artificial intelligence. Recently, the extensive success of pre-trained language models (PLMs) has raised significant attention about how knowledge can be acquired, maintained, updated and used by language models. Despite the enormous amount of related studies, there is still a lack of a unified view of how knowledge circulates within language models throughout the learning, tuning, and application processes, which may prevent us from further understanding the connections between current progress or realizing existing limitations. In this survey, we revisit PLMs as knowledge-based systems by dividing the life circle of knowledge in PLMs into five critical periods, and investigating how knowledge circulates when it is built, maintained and used. To this end, we systematically review existing studies of each period of the knowledge life cycle, summarize the main challenges and current limitations, and discuss future directions.

KeywordPre-trained language model, knowledge acquisition, knowledge representation, knowledge probing, knowledge editing, knowledge application
Sub direction classification其他
planning direction of the national heavy laboratory其他
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Chinese guide
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Document Type期刊论文
Collection学术期刊_Machine Intelligence Research
Affiliation1.Chinese Information Processing Laboratory, Beijing 100190, China
2.State Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China
3.University of Chinese Academy of Sciences, Beijing 101408, China
Recommended Citation
GB/T 7714
Boxi Cao,Hongyu Lin,Xianpei Han,et al. The Life Cycle of Knowledge in Big Language Models: A Survey[J]. Machine Intelligence Research,2024,21(2):217-238.
APA Boxi Cao,Hongyu Lin,Xianpei Han,&Le Sun.(2024).The Life Cycle of Knowledge in Big Language Models: A Survey.Machine Intelligence Research,21(2),217-238.
MLA Boxi Cao,et al."The Life Cycle of Knowledge in Big Language Models: A Survey".Machine Intelligence Research 21.2(2024):217-238.
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