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An exploration of the principles underlying redundancy-based factoid question answering
Article No.: 6
The so-called “redundancy-based” approach to question answering represents a successful strategy for mining answers to factoid questions such as “Who shot Abraham Lincoln?” from the World Wide Web. Through contrastive...
Evaluating the accuracy of implicit feedback from clicks and query reformulations in Web search
Thorsten Joachims, Laura Granka, Bing Pan, Helene Hembrooke, Filip Radlinski, Geri Gay
Article No.: 7
This article examines the reliability of implicit feedback generated from clickthrough data and query reformulations in World Wide Web (WWW) search. Analyzing the users' decision process using eyetracking and comparing implicit feedback against...
Soft pattern matching models for definitional question answering
Hang Cui, Min-Yen Kan, Tat-Seng Chua
Article No.: 8
We explore probabilistic lexico-syntactic pattern matching, also known as soft pattern matching, in a definitional question answering system. Most current systems use regular expression-based hard matching patterns to identify definition...
Automatic classification of Web queries using very large unlabeled query logs
Steven M. Beitzel, Eric C. Jensen, David D. Lewis, Abdur Chowdhury, Ophir Frieder
Article No.: 9
Accurate topical classification of user queries allows for increased effectiveness and efficiency in general-purpose Web search systems. Such classification becomes critical if the system must route queries to a subset of topic-specific and...