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AskNow: A framework for natural language query formalization in SPARQL

: Dubey, M.; Dasgupta, S.; Sharma, A.; Höffner, K.; Lehmann, J.


Sack, H.:
The semantic web. Latest advances and new domains. 13th international conference, ESWC 2016 : Heraklion, Crete, Greece, May 29-June 2, 2016; Proceedings
Cham: Springer International Publishing, 2016 (Lecture Notes in Computer Science 9678)
ISBN: 978-3-319-34128-6 (Print)
ISBN: 978-3-319-34129-3 (Online)
European Semantic Web Conference (ESWC) <13, 2016, Heraklion>
Conference Paper
Fraunhofer IAIS ()

Natural Language Query Formalization involves semantically parsing queries in natural language and translating them into their corresponding formal representations. It is a key component for developing question-answering (QA) systems on RDF data. The chosen formal representation language in this case is often SPARQL. In this paper, we propose a framework, called AskNow, where users can pose queries in English to a target RDF knowledge base (e.g. DBpedia), which are first normalized into an intermediary canonical syntactic form, called Normalized Query Structure (NQS), and then translated into SPARQL queries. NQS facilitates the identification of the desire (or expected output information) and the user-provided input information, and establishing their mutual semantic relationship. At the same time, it is sufficiently adaptive to query paraphrasing.