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Information / Question answering / Precision and recall / Mean reciprocal rank / Tf*idf / Wikipedia / Document retrieval / Yahoo! Answers / Information science / Information retrieval / Science


External Knowledge Sources for Question Answering Boris Katz, Gregory Marton, Gary Borchardt, Alexis Brownell, Sue Felshin, Daniel Loreto, Jesse Louis-Rosenberg, Ben Lu, ¨ Federico Mora, Stephan Stiller, Ozlem Uzuner, A
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City

Wikipedia / Cambridge / /

Company

Trans World Airlines / Google / Yahoo / /

Event

Product Recall / Product Issues / /

Facility

Artificial Intelligence Laboratory / /

IndustryTerm

partiallymanual and fully-automatic systems / passage-retrieval based algorithm / Web queries / automatic analysis tool / definition systems / Web search engine / Web search engines / Web-based answer / automatic systems / web rankings / Web-based Aranea question answering engine / preliminary search / keyword-based novelty filtering algorithm / /

NaturalFeature

Barents Sea / Wikipedia fall / /

Organization

MIT / idf / United Nations / /

Person

Osama Bin Laden / Jesse Louis-Rosenberg / Federico Mora / Lin / Gregory Marton / Sue Felshin / Ben Lu / Boris Katz / Woodrow Wilson / Angela Wilcox / Hillary Clinton / Alexis Brownell / Gary Borchardt / Woody Guthrie / Wilson Guthrie / Stephan Stiller / Daniel Loreto / /

Position

straight-forward / analyst / +anphr Definition Official / /

Product

WordNet / Aranea / Lucene / Nuggeteer / upper / Aranea system / /

ProvinceOrState

Massachusetts / /

SportsEvent

Olympics / /

Technology

search engine / passage-retrieval based algorithm / html / keyword-based novelty filtering algorithm / /

URL

http /

SocialTag