information seeking processes and models dr. dania bilal is 530 fall 2007
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Information Seeking Processes and Models
Dr. Dania BilalIS 530Fall 2007
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Charting your information seeking
Class Activity On a piece of paper, chart your
information seeking process from the time you have an information need to fulfill to the time it is met or unmet.
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Information Seeking
Process of finding information to fill a knowledge gap Need information to make a decision Need to learn about something Need to answer a question Need to increase own knowledge about a
subject of interest Need information to fill other needs
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Information Seeking
User interaction with IRs and sources to negotiate information need: Consult a professional human
intermediary User mediation/reference process
Consult friends, colleagues, classmates Self-service
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Information Seeking Models Represent how people search for
information in specific environments and how they interact with IRs and/or traditional sources to satisfy information needs
Models vary based on what researchers investigate
Commonality across user information seeking
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Information Seeking Models Kuhlthau’s Information Search Process
Model Ellis’ Behavioral Model Marchionini’s Information Process Model Wilson’s Problem-Solving Model Belkin’s Anomalous State of Knowledge
(ASK) Bate’s Berrypicking model
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Kuhlthau’s ISP Model
Information Search Process model (ISP)
Based on five studies in naturalistic settings
Emphasis on user thoughts, feelings, and actions rather than on systems
Undergraduate students; validated with high school students
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Kuhlthau’s ISP Model
Information search process from the user’s perspectives Six stages:1. Task initiation2. Topic selection3. Prefocus exploration4. Focus formulation5. Information collection6. Search closureSee Kuhlthau’s 2004 article, pp. 44-50.
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Ellis’ Behavioral Model David Ellis describes 8 information seeking
patterns of social scientists, physical scientists, and engineers in using hypertext (e.g., the Web).1. Starting (Surveying)2. Chaining3. Monitoring4. Browsing5. Differentiating (Distinguishing)6. Filtering7. Extracting8. Verifying9. Ending
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Ellis’ Model
See D. Turnball, 2.1.1.1-2.1.1.2.
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Marchionini’s Model
Problem solving approach to understanding information seeking process in the electronic environment
Eight processes that may work in parallel: Problem recognition, Problem definition,
Selection of system/source, Problem articulation (query formulation), Search execution, Examination of results, Extraction of desired information; Reflection, Iteration, and Stopping of search process
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Wilson’s Problem-Solving Model
T.D. Wilson’s 1997 model Goal-directed towards problem solving Based on a survey of research in the
health field Users move from uncertainty to certainty
through the problem-resolution process
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Wilson’s Problem-Solving Model
Stages: Problem identification Problem definition Problem resolution Solution statement
Model has affective dimensions Stages are sequential and non-linear
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Belkin’s ASK Theory
ASK (Anomalous State of Knowledge) “The cognitive and situational aspects that were the reason for seeking information and approaching an IR system” (Saracevic, 1996).
Knowledge gap (anomaly) and the need to solve it
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ASK Model
Definition A recognition by an individual that his/her
model of some aspect of the external world and of her/her position in it with respect to some particular situation is insufficient and knowledge is needed to reduce uncertainty
Contributions of ASK Reinforced the certainty of the user’s needs
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ASK Model Recognized the iterative nature of information
retrieval users return to the IR system repeatedly to
satisfy their information needs Move towards system design that is user-
rather than system-centered (people rather than documents)
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Bate’s Berrypicking Model
Marcia Bates examined the search behavior of researchers who were experts in a particular field (e.g., engineers, chemists, social scientists)
Researchers do not make a single search across collections…
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Bate’s Berrypicking Model they move across a variety of sources as
follows: Bit-at-a-time retrieval: not a direct route from
information need to final retrieved set. Searching changes direction, pauses, and
meanders as the user reads retrieved documents, follows up on leads, and responds to shifts in thinking.
New information gives users new ideas, new directions to pursue, and a new conception of their information needs.
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Bate’s Berrypicking Model Researchers’ information needs and the
queries they use to represent them these needs in systems are continually shifting: evolving search, dynamic, non-linear
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Bates’ Berrypicking Model
User information needs are not the same and they do change during the search process