Events Calendar

NL Seminar-Commonsense Knowledge Base Completion

Speaker: Xiang Li, University of Massachusetts Amherst

Talk Title: Commonsense Knowledge Base Completion

Series: Natural Language Seminar

Abstract: We enrich a curated resource of commonsense knowledge by formulating the problem as one of knowledge base completion KBC. Most work in KBC focuses on knowledge bases like Freebase that relate entities drawn from a fixed set. However, the tuples in Concept Net Speer and Havasi define relations between an unbounded set of phrases. We develop neural network models for scoring tuples on arbitrary phrases and evaluate them by their ability to distinguish true held out tuples from false ones. We find strong performance from a bilinear model using a simple additive architecture to model phrases. We manually evaluate our trained models ability to assign quality scores to novel tuples finding that it can propose tuples at the same quality level as medium confidence tuples from Concept Net.

Biography: Xiang Li is asummer intern under the supervision of Prof Kevin Knight and Prof Daniel Marcu. She is also going to be a PhD student at the University of Massachusetts Amherst in Andrew McCallums research group in this coming Fall. She got her BS at the East China Normal University Shanghai China and got her M.S at the University of Chicago. Her research interest mainly focused on natural language processing and machine learning. This work is done when she was in Chicago working with Prof Kevin Gimpel at TTIC Toyota Technological Institute at Chicago.

Host: Xing Shi and Kevin Knight

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

Location: Information Science Institute (ISI) - 6th Floor -CR # 689; ISI-Marina del Rey

Audiences: Everyone Is Invited

Contact: Peter Zamar

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