Boxi Cao, Hongyu Lin, Xianpei Han, Le Sun. The Life Cycle of Knowledge in Big Language Models: A Survey[J]. Machine Intelligence Research. DOI: 10.1007/s11633-023-1416-x
Citation: Boxi Cao, Hongyu Lin, Xianpei Han, Le Sun. The Life Cycle of Knowledge in Big Language Models: A Survey[J]. Machine Intelligence Research. DOI: 10.1007/s11633-023-1416-x

The Life Cycle of Knowledge in Big Language Models: A Survey

  • 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 directions1.
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