Events Calendar

NL Seminar-"Scaling Semantic Parsing to Large Domains" [Intern talk]

Speaker: Eunsol Choi, University of Washington

Talk Title: Scaling Semantic Parsing to Large Domains [Intern talk]

Series: Natural Language Seminar

Abstract: We consider the challenge of learning semantic parsers that scale to large, open-domain problems, such as question answering or knowledge base completion with Freebase. In such settings, the sentences cover a wide variety of topics and include many phrases whose meaning is difficult to represent in a fixed target ontology. For example, even simple phrases such as `daughter' and `number of people living in' cannot be directly represented in Freebase, whose ontology instead encodes facts about gender, parenthood, and population. Here, we introduce a semantic parsing approach that learns to resolve such ontological mismatches. The parser uses a probabilistic CCG to build linguistically motivated logical-form meaning representations, and includes an ontology matching model that adapts the output logical forms for each target ontology.



Biography: Eunsol Choi is a Ph.D student at the University of Washington, advised by Prof. Luke Zettlemoyer. Prior to UW, she studied mathematics and computer science at Cornell University.

Host: Aliya Deri and Kevin Knight

More Info: http://nlg.isi.edu/nl-seminar/

Location: Information Science Institute (ISI) - 11th Flr Conf Rm # 1135, Marina Del Rey

Audiences: Everyone Is Invited

Contact: Peter Zamar

Event Link: http://nlg.isi.edu/nl-seminar/