HiTailor: Interactive Transformation and Visualization for Hierarchical Tabular Data

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Guozheng Li, Runfei Li, Zicheng Wang, Chi Harold Liu, Min Lu, Guoren Wang

 View presentation:2022-10-19T14:36:00ZGMT-0600Change your timezone on the schedule page
2022-10-19T14:36:00Z

Exemplar figure, described by caption below — The user interface of the HiTailor prototype system. (a) Transformation operator panel; (b) Tabular visualization panel; (c) Visualization template panel; (d) Visualization configuration panel.

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The live footage of the talk, including the Q&A, can be viewed on the session page, Transforming Tabular Data and Grammars.

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Abstract

Tabular visualization techniques integrate visual representations with tabular data to avoid additional cognitive load caused by splitting users' attention. However, most of the existing studies focus on simple flat tables instead of hierarchical tables, whose complex structure limits the expressiveness of visualization results and affects users' efficiency in visualization construction. We present HiTailor, a technique for presenting and exploring hierarchical tables. HiTailor constructs an abstract model, which defines row/column headings as biclustering and hierarchical structures. Based on our abstract model, we identify three pairs of operators, Swap/Transpose, ToStacked/ToLinear, Fold/Unfold, for transformations of hierarchical tables to support users' comprehensive explorations. After transformation, users can specify a cell or block of interest in hierarchical tables as a TableUnit for visualization, and HiTailor recommends other related TableUnits according to the abstract model using different mechanisms. We demonstrate the usability of the HiTailor system through a comparative study and a case study with domain experts, showing that HiTailor can present and explore hierarchical tables from different viewpoints. HiTailor is available at https://github.com/bitvis2021/HiTailor.