Knowledge Graph Based Synthetic Corpus Generation for Knowledge-Enhanced Language Model Pre-training

• URL: http://arxiv.org/abs/2010.12688v2
• Date: Sat, 13 Mar 2021 18:25:01 GMT
• Title: Knowledge Graph Based Synthetic Corpus Generation for Knowledge-Enhanced Language Model Pre-training
• Authors: Oshin Agarwal, Heming Ge, Siamak Shakeri, Rami Al-Rfou
• Abstract summary: We verbalize the entire English Wikidata KG. We show that verbalizing a comprehensive, encyclopedic KG like Wikidata can be used to integrate structured KGs and natural language corpora.
• Score: 22.534866015730664
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Prior work on Data-To-Text Generation, the task of converting knowledge graph (KG) triples into natural text, focused on domain-specific benchmark datasets. In this paper, however, we verbalize the entire English Wikidata KG, and discuss the unique challenges associated with a broad, open-domain, large-scale verbalization. We further show that verbalizing a comprehensive, encyclopedic KG like Wikidata can be used to integrate structured KGs and natural language corpora. In contrast to the many architectures that have been developed to integrate these two sources, our approach converts the KG into natural text, allowing it to be seamlessly integrated into existing language models. It carries the further advantages of improved factual accuracy and reduced toxicity in the resulting language model. We evaluate this approach by augmenting the retrieval corpus in a retrieval language model and showing significant improvements on the knowledge intensive tasks of open domain QA and the LAMA knowledge probe.

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