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An Extensible Natural-Language Query Interface to an Event-Based Semantic Web Triplestore

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  • Fri, 11/02/2018 - 11:00am - 12:00pm

AbstractAn advantage of the semantic web is that information can be easily added to existing data. Ideally, it should be possible to query the original and new data, using an extensible natural-language query interface. (NLQI).In order to facilitate the extension of an NLQI, it helps if the query language is based on a compositional semantics, and if the language processor is highly modular. Such an NLQI to an online event-based triplestore has been constructed and is available through a web interface. The talk includes a demonstration of the NLI and query answering with respect to a remote semantic web triplestore.

The NLQI is implemented as an executable specification of a highly modular attribute grammar using parser combinators in a pure functional programming language. The parser/interpreter can handle ambiguous left-recursive grammars and fully dependent synthesized and inherited attributes. This enables the integration of semantic rules with syntactic rules, in the style of Montague Grammars, which facilitates the addition of new constructs to the query language.


Bio:  Dr. Richard Frost is a Professor Emeritus of Computer Science at the University of Windsor. In addition to winning numerous teaching awards, Richard has held an NSERC discovery grant continuously for 25 years. His book on knowledge base systems has been cited over 200 times, his research on language parsing has influenced parsing libraries in Python, and his work on natural-language semantics has been published in several world-class journals and conferences including the ACM “Computing Surveys”. Richard is the inventor of “SpeechWeb”

Melissa Robinet
(519)253-3000 ext.3773