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Articles
  • The Eye Movement Research of Cognitive Differences between Value Extraction and Relation Comparison in Graph Comprehension   [CPSH 2013]
  • Author(s)
  • Tong Shang, Yu Zhou, Zhao Liu, Xue Tan
  • ABSTRACT
  • In this paper, we use eye tracking to study cognitive mechanisms differences between value extraction and relation comparison during people’s reading of statistical charts, the main contents include the following two aspects: First, we explore the behavior differences between value extraction and relation comparison during people’s comprehending of statistical charts from the human cognitive behavior; Second, we conduct pattern classification to eye movement data using support vector machine (SVM) technology, and further analyze the differences of human thinking mode during the comprehending of statistical charts. The results show that: (1) The eye movement indexes such as pupil diameter, mean fixation duration, fixation duration had no significant difference between value extraction and relation comparison , while saccade distance had significant differences; (2) Normalization of data before classification can improve the classification accuracy; (3) We can get a stable classification accuracy using 5-fold cross-validation method; (4) The eye movement modes of value extraction and relation comparison have significant differences, namely, there are significant cognitive differences between value extraction and relation comparison in graph comprehension.
  • KEYWORDS
  • Eye Tracking Technology; Statistical Chart; Value Extraction; Relation Comparison; SVM
  • References
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