A simple way to estimate similarity between pairs of eye movement sequences
We propose a novel algorithm to estimate the similarity between a pair of eye movement sequences. The proposed algorithm relies on a straight-forward geometric representation of eye movement data. The algorithm is considerably simpler to implement and apply than existing similarity measures, and is...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2012-03-01
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| Series: | Journal of Eye Movement Research |
| Subjects: | |
| Online Access: | https://bop.unibe.ch/JEMR/article/view/2326 |
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| _version_ | 1849435245516947456 |
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| author | Sebastiaan Mathôt Filipe Cristino Iain D. Gilchrist Jan Theeuwes |
| author_facet | Sebastiaan Mathôt Filipe Cristino Iain D. Gilchrist Jan Theeuwes |
| author_sort | Sebastiaan Mathôt |
| collection | DOAJ |
| description | We propose a novel algorithm to estimate the similarity between a pair of eye movement sequences. The proposed algorithm relies on a straight-forward geometric representation of eye movement data. The algorithm is considerably simpler to implement and apply than existing similarity measures, and is particularly suited for exploratory analyses. To validate the algorithm, we conducted a benchmark experiment using realistic artificial eye movement data. Based on similarity ratings obtained from the proposed algorithm, we defined two clusters in an unlabelled set of eye movement sequences. As a measure of the algorithm's sensitivity, we quantified the extent to which these data-driven clusters matched two pre-defined groups (i.e., the 'real' clusters). The same analysis was performed using two other, commonly used similarity measures. The results show that the proposed algorithm is a viable similarity measure. |
| format | Article |
| id | doaj-art-4ea07cfd0ac247fab24d004cec6f846a |
| institution | Kabale University |
| issn | 1995-8692 |
| language | English |
| publishDate | 2012-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Eye Movement Research |
| spelling | doaj-art-4ea07cfd0ac247fab24d004cec6f846a2025-08-20T03:26:21ZengMDPI AGJournal of Eye Movement Research1995-86922012-03-015110.16910/jemr.5.1.4A simple way to estimate similarity between pairs of eye movement sequencesSebastiaan Mathôt0Filipe Cristino1Iain D. Gilchrist2Jan Theeuwes3Vrije Universiteit, AmsterdamBangor UniversityUniversity of BristolVrije Universiteit, AmsterdamWe propose a novel algorithm to estimate the similarity between a pair of eye movement sequences. The proposed algorithm relies on a straight-forward geometric representation of eye movement data. The algorithm is considerably simpler to implement and apply than existing similarity measures, and is particularly suited for exploratory analyses. To validate the algorithm, we conducted a benchmark experiment using realistic artificial eye movement data. Based on similarity ratings obtained from the proposed algorithm, we defined two clusters in an unlabelled set of eye movement sequences. As a measure of the algorithm's sensitivity, we quantified the extent to which these data-driven clusters matched two pre-defined groups (i.e., the 'real' clusters). The same analysis was performed using two other, commonly used similarity measures. The results show that the proposed algorithm is a viable similarity measure.https://bop.unibe.ch/JEMR/article/view/2326eye movementsdistancesimilarityscanpathsmethodology |
| spellingShingle | Sebastiaan Mathôt Filipe Cristino Iain D. Gilchrist Jan Theeuwes A simple way to estimate similarity between pairs of eye movement sequences Journal of Eye Movement Research eye movements distance similarity scanpaths methodology |
| title | A simple way to estimate similarity between pairs of eye movement sequences |
| title_full | A simple way to estimate similarity between pairs of eye movement sequences |
| title_fullStr | A simple way to estimate similarity between pairs of eye movement sequences |
| title_full_unstemmed | A simple way to estimate similarity between pairs of eye movement sequences |
| title_short | A simple way to estimate similarity between pairs of eye movement sequences |
| title_sort | simple way to estimate similarity between pairs of eye movement sequences |
| topic | eye movements distance similarity scanpaths methodology |
| url | https://bop.unibe.ch/JEMR/article/view/2326 |
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