| Full text | |
| Author(s): |
Marcilio-Jr, Wilson E.
;
Eler, Danilo M.
[1]
;
Paulovich, V, Fernando
;
Rodrigues-Jr, Jose F.
;
Artero, Almir O.
[1]
Total Authors: 5
|
| Affiliation: | [1] Marcilio-Jr, Jr., Wilson E., Sao Paulo State Univ UNESP, Fac Sci & Technol, Presidente Prudente, SP - Brazil
Total Affiliations: 1
|
| Document type: | Journal article |
| Source: | BIG DATA RESEARCH; v. 25, JUL 15 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
In exploratory tasks involving high-dimensional datasets, dimensionality reduction (DR) techniques help analysts to discover patterns and other useful information. Although scatter plot representations of DR results allow for cluster identification and similarity analysis, such a visual metaphor presents problems when the number of instances of the dataset increases, resulting in cluttered visualizations. In this work, we propose a scatter plot-based multilevel approach to display DR results and address clutter related problems when visualizing large datasets, together with the definition of a methodology to use focus+context interaction on non-hierarchical embeddings. The proposed technique, called ExplorerTree, uses a sampling selection technique on scatter plots to reduce visual clutter and guide users through exploratory tasks. We demonstrate ExplorerTree's effectiveness through a use case, where we visually explore activation images of the convolutional layers of a neural network. Finally, we also conducted a user experiment to evaluate ExplorerTree's ability to convey embedding structures using different sampling strategies. (C) 2021 Elsevier Inc. All rights reserved. (AU) | |
| FAPESP's process: | 16/11707-6 - Employing overlapping removal and representatives identification techniques in visualizations based on multidimensional projection |
| Grantee: | Wilson Estécio Marcílio Júnior |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 17/17450-0 - Hierarchical exploration on visual representations generated by multidimentional projections |
| Grantee: | Wilson Estécio Marcílio Júnior |
| Support Opportunities: | Scholarships abroad - Research Internship - Master's degree |
| FAPESP's process: | 18/17881-3 - Multilevel visual representation to assist the exploration of data sets |
| Grantee: | Danilo Medeiros Eler |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 18/25755-8 - Multilevel visual representation to assist the exploration of data sets |
| Grantee: | Wilson Estécio Marcílio Júnior |
| Support Opportunities: | Scholarships in Brazil - Technical Training Program - Technical Training |