クリック座標履歴に基づくWebユーザビリティ問題点抽出手法および議会議事録検索システムへの適用

抄録

This paper proposes a method for extracting clues of usability problems that the desired (expected) interaction sequences for a task are not sufficiently clear for users in Web contents/applications. The method extracts inconsistencies between user interactions for a task and desired interaction sequences for the task by logging and analyzing mouse-clicked points. The method models an operation as a two-dimensional directed line segment from a clicked point to the next-clicked point on the screen. Thus, a sequence of operations is modeled as a sequence of directed line segments in the click order. To detect inconsistencies in user interactions and desired sequences, each directed line segment from user logs is compared with each directed line segment from desired logs. The authors have developed computer tools for the proposed method and applied the tools to evaluate a web-based system for browsing and searching assembly minutes of local governments. The system should be sufficiently easy for users to access public information in the assembly minutes. In our study 23 problems could be found in three vers. of the system, which shows the applicability of our method to finding problems of unclearness in the desired sequences.