23 - Web Search in 2020 Type key words into a search box...

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1 1 Web Search in 2020? Type key words into a search box? Social or “human powered” search? The Semantic Web? Intelligent search/semantic search/natural language search? 2 Intelligent Search Instead of merely retrieving Web pages, read ’em! Machine Reading = Information Extraction + tractable inference Alon Halevy will give a talk at the UW database seminar on Friday Dec 5 IE(sentence) = who did what? speaking(Alon Halevy, UW) Inference = uncover implicit information Will Alon visit Seattle?
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2 3 Application: Information Fusion What kills bacteria? Which west coast, nano-technology companies are hiring? What is a quiet, inexpensive, 4-star hotel in Vancouver? 4 Opine IE(product reviews) Informative Abundant, but varied Textual Summarize reviews without any prior knowledge of product category Opinion Mining
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4 7 TextRunner Extraction Extract Triple representing binary relation (Arg1, Relation, Arg2) from sentence. Internet powerhouse, EBay, was originally founded by Pierre Omidyar . Internet powerhouse, EBay, was originally founded by Pierre Omidyar . (Ebay, Founded by, Pierre Omidyar) 8 Numerous Extraction Challenges Drop non-essential info: “was originally founded by” founded by Retain key distinctions Ebay founded by Pierr Ebay founded Pierre Non-verb relationships “George Bush, president of the U.S…” Synonymy & aliasing Albert Einstein = Einstein Einstein Bros.
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9 Question Answering from Open-Domain Text An idea originating from the IR community With massive collections of full-text documents, simply finding relevant documents is of limited use: we want answers from textbases QA: give the user a (short) answer to their question, perhaps supported by evidence. The common person’s view? [From a novel] “I like the Internet. Really, I do. Any time I need a piece of shareware or I want to find out the weather in Bogota … I’m the first guy to get the modem humming. But as a source of information, it sucks. You got a billion pieces of data, struggling to be heard and seen and downloaded, and anything I want to know seems to get trampled underfoot in the crowd.” M. Marshall. The Straw Men. HarperCollins Publishers, 2002. 10 People want to ask questions… Examples from AltaVista query log who invented surf music? how to make stink bombs where are the snowdens of yesteryear? which english translation of the bible is used in official catholic liturgies? how to do clayart how to copy psx how tall is the sears tower? Examples from Excite query log (12/1999) how can i find someone in texas where can i find information on puritan religion? what are the 7 wonders of the world
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23 - Web Search in 2020 Type key words into a search box...

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