Permutation test for groups of scanpaths using normalized Levenshtein distances and application in NMR questions

Hui Tang, Joseph J. Topczewski, Anna M. Topczewski, Norbert J. Pienta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

19 Scopus citations

Abstract

This paper presents a permutation test that statistically compares two groups of scanpaths. The test uses normalized Levenshtein distances when the lengths of scanpaths are not the same. This method was applied in a recent eye-tracking experiment in which two groups of chemistry students viewed nuclear magnetic resonance (NMR) spectroscopic signals and chose the corresponding molecular structure from the candidates. A significant difference was detected between the two groups, which is consistent with the fact that students in the expert group showed more efficient scan patterns in the experiment than the novice group. Various numbers of permutations were tested and the results showed that p-values only varied in a small range with different permutation numbers and that the statistical significance was not affected.

Original languageEnglish (US)
Title of host publicationProceedings - ETRA 2012
Subtitle of host publicationEye Tracking Research and Applications Symposium
Pages169-172
Number of pages4
DOIs
StatePublished - Jun 28 2012
Event7th Eye Tracking Research and Applications Symposium, ETRA 2012 - Santa Barbara, CA, United States
Duration: Mar 28 2012Mar 30 2012

Publication series

NameEye Tracking Research and Applications Symposium (ETRA)

Other

Other7th Eye Tracking Research and Applications Symposium, ETRA 2012
CountryUnited States
CitySanta Barbara, CA
Period3/28/123/30/12

Keywords

  • NMR
  • chemistry
  • eye tracking
  • permutation test
  • scanpath

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    Tang, H., Topczewski, J. J., Topczewski, A. M., & Pienta, N. J. (2012). Permutation test for groups of scanpaths using normalized Levenshtein distances and application in NMR questions. In Proceedings - ETRA 2012: Eye Tracking Research and Applications Symposium (pp. 169-172). (Eye Tracking Research and Applications Symposium (ETRA)). https://doi.org/10.1145/2168556.2168584