Abstract
While there has been substantial progress in factoid question-answering (QA), answering complex questions remains challenging, typically requiring both a large body of knowledge and inference techniques. Open Information Extraction (Open IE) provides a way to generate semi-structured knowledge for QA, but to date such knowledge has only been used to answer simple questions with retrieval-based methods. We overcome this limitation by presenting a method for reasoning with Open IE knowledge, allowing more complex questions to be handled. Using a recently proposed support graph optimization framework for QA, we develop a new inference model for Open IE, in particular one that can work effectively with multiple short facts, noise, and the relational structure of tuples. Our model significantly outperforms a state-of-the-art structured solver on complex questions of varying difficulty, while also removing the reliance on manually curated knowledge.- Anthology ID:
- P17-2049
- Volume:
- Proceedings of the 55th Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers)
- Month:
- July
- Year:
- 2017
- Address:
- Vancouver, Canada
- Editors:
- Regina Barzilay, Min-Yen Kan
- Venue:
- ACL
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 311–316
- Language:
- URL:
- https://preview.aclanthology.org/build-pipeline-with-new-library/P17-2049/
- DOI:
- 10.18653/v1/P17-2049
- Cite (ACL):
- Tushar Khot, Ashish Sabharwal, and Peter Clark. 2017. Answering Complex Questions Using Open Information Extraction. In Proceedings of the 55th Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers), pages 311–316, Vancouver, Canada. Association for Computational Linguistics.
- Cite (Informal):
- Answering Complex Questions Using Open Information Extraction (Khot et al., ACL 2017)
- PDF:
- https://preview.aclanthology.org/build-pipeline-with-new-library/P17-2049.pdf
- Data
- TupleInf Open IE Dataset