2026-09-19T08:53:13Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/180212022-01-13T07:54:29Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Boris Katz.
Wu, Lynn, 1981-
Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
2005-06-02T19:39:18Z
2005-06-02T19:39:18Z
2003
2003
http://hdl.handle.net/1721.1/18021
57224520
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.
MIT Institute Archives copy: p. 29-56 bound in reverse order.
Includes bibliographical references (p. 54-56).
Prism is an answer projection system that combines the best attributes of traditional and Web-based question answering systems. Traditional question answering systems retrieve answers with pinpoint accuracy but limited coverage, using a small and reliable data source, while Web-based systems retrieve answers with broad coverage but limited accuracy, using a large but noisy data source. By taking advantage of the strengths of each system, an answer projection system can answer as many questions as a Web-based system while still being as accurate as a traditional system. In fact, Prism improves the performance of a traditional question answering system by 25%. It improves the accuracy of answers retrieved from the World Wide Web by 10%, and more importantly, it verifies answers retrieved from the Web by providing reliable supporting documents. By combining Prism with traditional and Web-based systems, we obtain a question answering system with high accuracy and broad coverage.
by Lynn Wu.
M.Eng.
[i], 56 p.
3000639 bytes
3005965 bytes
application/pdf
application/pdf
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.
http://dspace.mit.edu/handle/1721.1/7582
Electrical Engineering and Computer Science.
Prism : an answer projection system
Thesis
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