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 language | English (US) |
|---|---|
| Title of host publication | Proceedings - ETRA 2012 |
| Subtitle of host publication | Eye Tracking Research and Applications Symposium |
| Pages | 169-172 |
| Number of pages | 4 |
| DOIs | |
| State | Published - Jun 28 2012 |
| Event | 7th Eye Tracking Research and Applications Symposium, ETRA 2012 - Santa Barbara, CA, United States Duration: Mar 28 2012 → Mar 30 2012 |
Publication series
| Name | Eye Tracking Research and Applications Symposium (ETRA) |
|---|
Other
| Other | 7th Eye Tracking Research and Applications Symposium, ETRA 2012 |
|---|---|
| Country | United States |
| City | Santa Barbara, CA |
| Period | 3/28/12 → 3/30/12 |
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Keywords
- NMR
- chemistry
- eye tracking
- permutation test
- scanpath
Cite this
Permutation test for groups of scanpaths using normalized Levenshtein distances and application in NMR questions. / Tang, Hui; Topczewski, Joseph J.; Topczewski, Anna M.; Pienta, Norbert J.
Proceedings - ETRA 2012: Eye Tracking Research and Applications Symposium. 2012. p. 169-172 (Eye Tracking Research and Applications Symposium (ETRA)).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Permutation test for groups of scanpaths using normalized Levenshtein distances and application in NMR questions
AU - Tang, Hui
AU - Topczewski, Joseph J.
AU - Topczewski, Anna M.
AU - Pienta, Norbert J.
PY - 2012/6/28
Y1 - 2012/6/28
N2 - 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.
AB - 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.
KW - NMR
KW - chemistry
KW - eye tracking
KW - permutation test
KW - scanpath
UR - http://www.scopus.com/inward/record.url?scp=84862659533&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84862659533&partnerID=8YFLogxK
U2 - 10.1145/2168556.2168584
DO - 10.1145/2168556.2168584
M3 - Conference contribution
AN - SCOPUS:84862659533
SN - 9781450312257
T3 - Eye Tracking Research and Applications Symposium (ETRA)
SP - 169
EP - 172
BT - Proceedings - ETRA 2012
ER -