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The Genus Xyris L. in North Carolina

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Elisha Mitchell Scientific Society: Chapel Hill, N.C.
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Abstract

thesis Airong Xu. Eye Tracking Study on Identifying and Analyzing User Behavior - Eye Movements, Eye Fixation Duration and Patterns - When Processing Numeric Table Data in Paper or PDF Format. A Master’s paper for the M.S. in I.S. degree. November, 2000. 60 pages. Advisor: Gary Marchionini This study describes an eye tracking experiment conducted at the Interaction Design Lab of UNC-CH. This experiment focuses on identifying and analyzing user behavior and patterns when processing numeric table data in paper or PDF format. Eight sets of eye data were collected using the ASL 504 eye tracking system, and raw data were analyzed using EYENAL and FIXPLOT software. Statistical literacy and familiarity with tables is an important factor in determining users’ search performances. For both formats, table column and row headings account for nearly half of users’ visual attention during search as measured by fixation duration. In large tables, PDF files do not appear to be appropriate for browsing and searching, and footnotes seem hard to use. Simple manipulations over table data are helpful for users to get a better understanding of statistical tables. Headings: Eye tracking Eye movement patterns Statistical tables Tabular data User information-seeking behavior EYE TRACKING STUDY ON IDENTIFYING AND ANALYZING USER BEHAVIOR - EYE MOVEMENTS, EYE FIXATION DURATION AND PATTERNS - WHEN PROCESSING NUMERIC TABLE DATA IN PAPER OR PDF FORMAT by Airong Xu A Master’s paper submitted to the faculty of the School of Information and Library Science of the University of North Carolina at Chapel Hill in partial fulfillment of the requirements for the degree of Master of Science in Information Science. Chapel Hill, North Carolina November, 2000 Approved by: _________________________ Advisor: Dr. Gary Marchionini i

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