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Personalizing information retrieval using task features, topic knowledge, and task products
Descriptive
TypeOfResource
Text
TitleInfo
(ID = T-1)
Title
Personalizing information retrieval using task features, topic knowledge, and task products
Identifier
ETD_2967
Identifier
(type = hdl)
http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000056514
Language
LanguageTerm
(authority = ISO639-2);
(type = code)
eng
Genre
(authority = marcgt)
theses
Subject
(ID = SBJ-1);
(authority = RUETD)
Topic
Communication, Information and Library Studies
Subject
(ID = SBJ-2);
(authority = ETD-LCSH)
Topic
Information retrieval
Subject
(ID = SBJ-3);
(authority = ETD-LCSH)
Topic
Computer users--Knowledge
Subject
(ID = SBJ-4);
(authority = ETD-LCSH)
Topic
Human information processing
Abstract
(type = abstract)
Personalization of information retrieval tailors search towards individual users to meet their particular information needs by taking into account information about users and their contexts, often through implicit sources of evidence such as user behaviors and contextual factors. The current study looks particularly at users’ dwelling behavior, measured by the time that they spend on documents; and several contextual factors: the stage of users’ work tasks, task type, users’ knowledge of task topics, to explore whether or not taking account of task stage, task type, and topic knowledge could help predict document usefulness from the time that users spend on the documents. This study also investigates whether or not expanding queries with important terms extracted from task products and useful pages improves search performance. To these ends, a controlled lab experiment was conducted with 24 student participants, each coming three times in a two-week period to work on three sub-tasks in a general work task. Data were collected by logging software that recorded user-system interaction and questionnaires that elicited users’ background information and perceptions on a number of aspects. Observations in the study and examinations of the data found that the time users spent on documents could have three different types: total display time, total dwell time, and decision time, which had different roles in working as a reliable indicator of document usefulness. Task stage was found to help interpret certain types of time as reliable indicators of document usefulness in certain task types, so was topic knowledge, and the latter played a more significant role when both were available. This study contributes to a better understanding of how information seeking behaviors, specifically, time that users spend on documents, can be used as implicit evidence of document usefulness, as well as how contextual factors of task stage, topic knowledge, and task type can help interpret time as an indicator of usefulness. These findings have theoretical and practical implications for using behaviors and contextual factors in the development of personalization systems. Future studies are suggested on making use of these findings as well as research on related issues.
PhysicalDescription
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electronic resource
Extent
xviii, 201 p. : ill.
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text/xml
Note
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Ph.D.
Note
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Includes bibliographical references
Note
(type = vita)
Includes vita
Note
(type = statement of responsibility)
by Jingjing Liu
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Liu
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Jingjing
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author
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Jingjing Liu
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Belkin
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Nicholas J.
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chair
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Advisory Committee
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Nicholas J. Belkin
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(type = family)
Gwizdka
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Jacek
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internal member
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Advisory Committee
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Jacek Gwizdka
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NamePart
(type = family)
Zhang
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(type = given)
Xiangmin
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internal member
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Advisory Committee
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Xiangmin Zhang
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Kelly
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(type = given)
Diane
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outside member
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Advisory Committee
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Diane Kelly
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Rutgers University
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degree grantor
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Graduate School - New Brunswick
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school
OriginInfo
DateCreated
(qualifier = exact)
2010
DateOther
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2010-10
Place
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(type = code)
xx
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TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
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ETD
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TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
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rucore19991600001
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NjNbRU
Identifier
(type = doi)
doi:10.7282/T3057FNC
Genre
(authority = ExL-Esploro)
ETD doctoral
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Rights
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The author owns the copyright to this work.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
RightsHolder
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(type = personal)
Name
FamilyName
Liu
GivenName
Jingjing
Role
Copyright Holder
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(ID = RE-1);
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Type
Permission or license
DateTime
2010-09-30 14:28:11
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Name
Jingjing Liu
Affiliation
Rutgers University. Graduate School - New Brunswick
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Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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Technical
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ETD
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application/pdf
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application/x-tar
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2396160
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