1. UWM
  2. School of Information Studies
  3. News & Events
  4. Events
  5. Investigating User Search Tactic Patterns and System Support in Using Digital Libraries

Investigating User Search Tactic Patterns and System Support in Using Digital Libraries

Dissertation Defense Presentation

Dr. Soohyung Joo

Tuesday, February 4, 2014
12:00 - 1:00pm
NWQB 3511

This study aims to investigate users' search tactic application and system support in using digital libraries. A user study was conducted with sixty digital library users. The study was designed to answer three research questions: 1) How do users engage in a search process by applying different types of search tactics while conducting different search tasks?; 2) How does the system support users to apply different types of search tactics?; 3) How do users' search tactic application and system support for different types of search tactics affect search outputs? Multiple methods were employed to collect data, including questionnaires, transaction logs and think-aloud protocols. Subjects were asked to conduct three different types of search tasks, including known-item search, specific information search and exploratory search, using Library of Congress Digital Libraries. To explore users’ search tactic patterns, quantitative analysis was conducted, such as ANOVA, transition analysis, and clustering analysis. Types of system support were explored by analyzing system features for search tactic application. In addition, users’ perceived system support, difficulty, and satisfaction with search tactic application were measured using post-search questionnaires. Finally, this study examined the causal relationships between search processes and search outputs based on multiple regression and structural equation modeling. Based on the findings, the author discussed unique patterns of users’ search tactic application as well as system design implications in digital library environments.

Committee Members:
Dr. Iris Xie (major advisor)
Dr. Dietmar Wolfram
Dr. Xiangming Mu
Dr. Pertti Vakkari (University of Tampere, Finland)
Dr. Diane Kelly (University of North Carolina)


|