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CONTEXT-BASED INFORMATION AND TRUST ANALYSIS
by
Vesile Evrim
A Dissertation Presented to the
FACULTY OF THE GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(COMPUTER SCIENCE)
December 2009
Copyright 2009 Vesile Evrim
Object Description
| Title | Context-based information and trust analysis |
| Author | Evrim, Vesile |
| Author email | evrim@usc.edu; vesile1@yahoo.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Computer Science |
| School | Viterbi School of Engineering |
| Date defended/completed | 2009-06-29 |
| Date submitted | 2009 |
| Restricted until | Restricted until 3 Apr. 2010. |
| Date published | 2010-04-03 |
| Advisor (committee chair) | McLeod, Dennis |
| Advisor (committee member) |
Boehm, Barry Pryor, Lawrence |
| Abstract | Finding the relevant set of information that satisfies an information request of a Web user in the availability of today’s vast amount of digital data is becoming a challenging problem. Currently available Information Retrieval (IR) Systems are designed to return long lists of results only a few of which are relevant for a specific user. This thesis presents an IR method called CONITA that investigates the context information of the user and user’s information request to provide relevant results for the given domain users.; In this thesis relevance is measured by the semantics and credibility of the information provided in the documents. The information extracted from lexical and domain ontologies are integrated by the user’s interest information to expand the terms entered in the request. The obtained set of terms is categorized by a novel approach and the relations between the categories are obtained from the ontologies. This categorization is used to improve the quality of the document selection by going beyond checking the availability of the words in the document but by analyzing the semantic composition of the mapped terms.; We also introduced a novel approach to measure the credibility of the Web documents retrieved for the domain users. The proposed approach combines user’s feedback with provenance, reputation and recommendation information of the Web sources to calculate the credibility score of the documents. |
| Keyword | information retrieval; relevance; trust; ontology; search; query |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m2638 |
| Rights | Evrim, Vesile |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-evrim-3259 |
| Archival file | uscthesesreloadpub_Volume40/etd-evrim-3259.pdf |
Description
| Title | Page 1 |
| Full text | CONTEXT-BASED INFORMATION AND TRUST ANALYSIS by Vesile Evrim A Dissertation Presented to the FACULTY OF THE GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (COMPUTER SCIENCE) December 2009 Copyright 2009 Vesile Evrim |
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