%0 Conference Paper %1 schafer2022group %A Schäfer, Peter %A Rodrigues, Nils %A Weiskopf, Daniel %A Storandt, Sabine %B Proceedings of the ACM Symposium on Visual Information Communication and Interaction (VINCI) %D 2022 %I ACM %K 2022 b01 b06 sfbtrr161 visus visus:rodrigns visus:weiskopf %R 10.1145/3554944.3554971 %T Group Diagrams for Simplified Representation of Scanpaths %U https://doi.org/10.1145/3554944.3554971 %X We instrument Group Diagrams (GDs) to reduce clutter in sets of eye-tracking scanpaths. Group Diagrams consist of trajectory subsets that cover, or represent, the whole set of trajectories with respect to some distance measure and an adjustable distance threshold. The original GDs allow for an application of various distance measures. We implement the GD framework and evaluate it on scanpaths that were collected by a former user study on public transit maps. We find that the Fréchet distance is the most appropriate measure to get meaningful results, yet it is flexible enough to cover outliers.We discuss several implementation-specific challenges and improve the scalability of the algorithm.

@inproceedings{schafer2022group, abstract = {We instrument Group Diagrams (GDs) to reduce clutter in sets of eye-tracking scanpaths. Group Diagrams consist of trajectory subsets that cover, or represent, the whole set of trajectories with respect to some distance measure and an adjustable distance threshold. The original GDs allow for an application of various distance measures. We implement the GD framework and evaluate it on scanpaths that were collected by a former user study on public transit maps. We find that the Fréchet distance is the most appropriate measure to get meaningful results, yet it is flexible enough to cover outliers.We discuss several implementation-specific challenges and improve the scalability of the algorithm.}, added-at = {2022-09-08T13:15:09.000+0200}, author = {Schäfer, Peter and Rodrigues, Nils and Weiskopf, Daniel and Storandt, Sabine}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2d432e58232b59da52554d2fd3eb8706c/christinawarren}, booktitle = {Proceedings of the ACM Symposium on Visual Information Communication and Interaction (VINCI)}, doi = {10.1145/3554944.3554971}, interhash = {e62bfc36847ac6fedc6677dd9781364f}, intrahash = {d432e58232b59da52554d2fd3eb8706c}, keywords = {2022 b01 b06 sfbtrr161 visus visus:rodrigns visus:weiskopf}, month = {8}, publisher = {ACM}, timestamp = {2022-09-08T11:15:09.000+0200}, title = {Group Diagrams for Simplified Representation of Scanpaths}, url = {https://doi.org/10.1145/3554944.3554971}, year = 2022 }