| Abstract |
| The purpose of this research was to implement and verify an information retrieval(IR) system based on users` relevance criteria for information search tasks. For this purpose, we implemented an IR system with a dynamic ranking model using users` relevance criteria varying with the types of information search task and evaluated this system through user experiment. 45 participants performed three information search tasks on both IR systems with a static and a dynamic ranking model. Three Information search tasks are fact finding search task, problem solving search task and decision making search task. Participants evaluated top five search results on 7 likert scales of relevance. We observed that the IR system with a dynamic ranking model provided more relevant search results compared to the system with a static ranking model. This research has significance in designing IR system for information search tasks, in testing the validity of user-oriented relevance judgement model by implementing an IR system for actual information search tasks and in relating user research to the improvement of an IR system. |
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| Key Words |
| 적합성, 사용자 중심 적합성, 적합성 판단, 적합성 평가, 정보 검색 과제, 검색 랭킹 모델, Relevance, User-centered Relevance, Relevance Judgement, Relevance Evaluation, Information Search Task, Search Ranking Model |
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