Text2KGBench: A Benchmark for Ontology-Driven Knowledge Graph Generation from Text

• URL: http://arxiv.org/abs/2308.02357v1
• Date: Fri, 4 Aug 2023 14:47:15 GMT
• Title: Text2KGBench: A Benchmark for Ontology-Driven Knowledge Graph Generation from Text
• Authors: Nandana Mihindukulasooriya, Sanju Tiwari, Carlos F. Enguix, Kusum Lata
• Abstract summary: Large language models (LLM) and foundation models with emergent capabilities have been shown to improve the performance of many NLP tasks. We present Text2KGBench, a benchmark to evaluate the capabilities of language models to generate Knowledge Graphs (KGs) from natural language text guided by an ontology.
• Score: 2.396908230113859
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The recent advances in large language models (LLM) and foundation models with emergent capabilities have been shown to improve the performance of many NLP tasks. LLMs and Knowledge Graphs (KG) can complement each other such that LLMs can be used for KG construction or completion while existing KGs can be used for different tasks such as making LLM outputs explainable or fact-checking in Neuro-Symbolic manner. In this paper, we present Text2KGBench, a benchmark to evaluate the capabilities of language models to generate KGs from natural language text guided by an ontology. Given an input ontology and a set of sentences, the task is to extract facts from the text while complying with the given ontology (concepts, relations, domain/range constraints) and being faithful to the input sentences. We provide two datasets (i) Wikidata-TekGen with 10 ontologies and 13,474 sentences and (ii) DBpedia-WebNLG with 19 ontologies and 4,860 sentences. We define seven evaluation metrics to measure fact extraction performance, ontology conformance, and hallucinations by LLMs. Furthermore, we provide results for two baseline models, Vicuna-13B and Alpaca-LoRA-13B using automatic prompt generation from test cases. The baseline results show that there is room for improvement using both Semantic Web and Natural Language Processing techniques.

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