Skip to main content


Kim, J., Oard, D., Romanik, K. (May 2000)
User Modeling for Information Access Based on Implicit Feedback
Proceedings of ISKO-France 2001, July 5-6, Nanterre, France.
HCIL-2000-11, CS-TR-4136, UMIACS-TR-2000-29

User modeling can be used in information filtering and retrieval systems to improve the representation of a user's information needs. User models can be constructed by hand, or learned automatically based on feedback provided by the user about the relevance of documents that they have examined. By observing user behavior, it is possible to infer implicit feedback without requiring explicit relevance judgments. Previous studies based on Internet discussion groups (USENET news) have shown reading time to be a useful source of implicit feedback for predicting a user's preferences. The study reported in this paper extends that work by providing framework for considering alternative sources of implicit feedback, examining whether reading time is useful for predicting a user's preferences for academic and professional journal articles, and exploring whether retention behavior can usefully augment the information that reading time provides. Two user studies were conducted in which undergraduate students examined articles and abstracts related to the telecommunications and pharmaceutical industries. The results showed that reading time could be used to predict the user's assessment of relevance, although reading time for journal articles and technical abstracts are longer than has been reported for USENET news documents. Observation of printing events, a type of retention behavior, was found to provide additional useful evidence about relevance beyond that which could be inferred from reading time. The paper concludes with a brief discussion of the implications of the reported results.


Computational and Data Journalism
More information

Tech Reports
Video Reports
Annual Symposium

Seminars + Events
HCIL Seminar Series
Annual Symposium
HCIL Service Grants
Events Archives
HCIL Conference Travel Award
Job Openings
For the Press
HCIL Overview
Become a Member
Collaborating Groups + People
Academic Visitors
Join our Mailing List
Contact Us
Visit Us
HCIL Store
Give the HCIL a Hand
HCIL T-shirts for Sale
Our Lighter Side
HCIL Memories Page
Faculty/ Staff
Ph.D. Alumni
Past Members
Research Areas
Design Process
Digital Libraries
Physical Devices
Public Access
Research Histories
Faculty Listed by Research
Project Highlights
Project Screenshots
Publications and TRs
Studying HCI
Masters in HCI
PhD in HCI
Visiting Scholars
Class Websites
Sponsor our Research
Sponsor our Annual Symposium
Active Sponsorship
Industrial Visitors

Web Accessibility