Abstract
Language models are trained on large volumes of text, and as a result their parameters might contain a significant body of factual knowledge. Any downstream task performed by these models implicitly builds on these facts, and thus it is highly desirable to have means for representing this body of knowledge in an interpretable way. However, there is currently no mechanism for such a representation. Here, we propose to address this goal by extracting a knowledge-graph of facts from a given language model. We describe a procedure for “crawling” the internal knowledge-base of a language model. Specifically, given a seed entity, we expand a knowledge-graph around it. The crawling procedure is decomposed into sub-tasks, realized through specially designed prompts that control for both precision (i.e., that no wrong facts are generated) and recall (i.e., the number of facts generated). We evaluate our approach on graphs crawled starting from dozens of seed entities, and show it yields high precision graphs (82-92%), while emitting a reasonable number of facts per entity.- Anthology ID:
- 2023.findings-eacl.139
- Volume:
- Findings of the Association for Computational Linguistics: EACL 2023
- Month:
- May
- Year:
- 2023
- Address:
- Dubrovnik, Croatia
- Editors:
- Andreas Vlachos, Isabelle Augenstein
- Venue:
- Findings
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 1856–1869
- Language:
- URL:
- https://aclanthology.org/2023.findings-eacl.139
- DOI:
- 10.18653/v1/2023.findings-eacl.139
- Cite (ACL):
- Roi Cohen, Mor Geva, Jonathan Berant, and Amir Globerson. 2023. Crawling The Internal Knowledge-Base of Language Models. In Findings of the Association for Computational Linguistics: EACL 2023, pages 1856–1869, Dubrovnik, Croatia. Association for Computational Linguistics.
- Cite (Informal):
- Crawling The Internal Knowledge-Base of Language Models (Cohen et al., Findings 2023)
- PDF:
- https://preview.aclanthology.org/dois-2013-emnlp/2023.findings-eacl.139.pdf