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Question Answering

Question Answering. Using Knowledge in QA. Relation Extraction. Answers: Databases of Relations born-in(“Emma Goldman”, “June 27 1869”) author-of(“Cao Xue Qin”, “Dream of the Red Chamber”) Draw from Wikipedia infoboxes , DBpedia , FreeBase , etc.

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Question Answering

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  1. Question Answering Using Knowledge in QA

  2. Relation Extraction • Answers: Databases of Relations • born-in(“Emma Goldman”, “June 27 1869”) • author-of(“Cao Xue Qin”, “Dream of the Red Chamber”) • Draw from Wikipedia infoboxes, DBpedia, FreeBase, etc. • Questions: Extracting Relations in Questions Whose granddaughter starred in E.T.? (acted-in ?x “E.T.”) (granddaughter-of ?x ?y)

  3. TemporalReasoning • Relationdatabases • (and obituaries, biographicaldictionaries, etc.) • IBM Watson ”In 1594 he took a job as a taxcollector in Andalusia” Candidates: • Thoreauis a badanswer (born in 1817) • Cervantes is possible (wasalive in 1594)

  4. Geospatialknowledge(containment, directionality, borders) • Beijing is a goodanswer for ”Asian city” • California is ”southwest of Montana” • geonames.org:

  5. Context and Conversation in Virtual Assistants like Siri • Coreference helps resolve ambiguities U: “Book a table at Il Fornaio at 7:00 with my mom” U: “Also send her an email reminder” • Clarification questions: U: “Chicago pizza” S: “Did you mean pizza restaurants in Chicago or Chicago-style pizza?”

  6. Question Answering Using Knowledge in QA

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