Paper: Question Answering over Linked Data Using First-order Logic

ACL ID D14-1116
Title Question Answering over Linked Data Using First-order Logic
Venue Conference on Empirical Methods in Natural Language Processing
Session Main Conference
Year 2014
Authors

Question Answering over Linked Data (QALD) aims to evaluate a question an- swering system over structured data, the key objective of which is to translate questions posed using natural language into structured queries. This technique can help common users to directly ac- cess open-structured knowledge on the Web and, accordingly, has attracted much attention. To this end, we propose a novel method using first-order logic. We formulate the knowledge for resolving the ambiguities in the main three steps of QALD (phrase detection, phrase-to- semantic-item mapping and semantic item grouping) as first-order logic clauses in a Markov Logic Network. All clauses can then produce interacted effects in a unified framework and can jointly resolve all am- biguities. Moreover, our method adopts a patte...