Name
Abstract | ||
|---|---|---|
Pattern extraction algorithms are enabling insights into the ever-growing amount of today's datasets by translating reoccurring data properties into compact representations. Yet, a practical problem arises: With increasing data volumes and complexity also the number of patterns increases, leaving the analyst with a vast result space. Current algorithmic and especially visualization approaches often fail to answer central overview questions essential for a comprehensive understanding of pattern distributions and support, their quality, and relevance to the analysis task. To address these challenges, we contribute a visual analytics pipeline targeted on the pattern-driven exploration of result spaces in a semi- automatic fashion. Specifically, we combine image feature analysis and unsupervised learning to partition the pattern space into interpretable, coherent chunks, which should be given priority in a subsequent in-depth analysis. In our analysis scenarios, no ground-truth is given. Thus, we employ and evaluate novel quality metrics derived from the distance distributions of our image feature vectors and the derived cluster model to guide the feature selection process. We visualize our results interactively, allowing the user to drill down from overview to detail into the pattern space and demonstrate our techniques in two case studies on Earth observation and biomedical genomic data. |
Year | DOI | Venue |
|---|---|---|
2018 | 10.1109/BDVA.2018.8534028 | 2018 International Symposium on Big Data Visual and Immersive Analytics (BDVA) |
Keywords | DocType | Volume |
image feature analysis,biomedical genomic data,visual pattern-driven exploration,big data,pattern extraction algorithms,translating reoccurring data properties,compact representations,data volumes,unsupervised learning,cluster model,earth observation | Conference | abs/1807.01364 |
ISBN | Citations | PageRank |
978-1-5386-9195-3 | 0 | 0.34 |
References | Authors | |
0 | 6 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Michael Behrisch | 1 | 234 | 17.70 |
| Robert Krüger | 2 | 2 | 1.69 |
| Fritz Lekschas | 3 | 32 | 5.14 |
| Tobias Schreck | 4 | 1854 | 123.28 |
| Nils Gehlenborg | 5 | 363 | 36.48 |
| Hanspeter Pfister | 6 | 5933 | 340.59 |