https://www.dagstuhl.de/19192

May 5 – 10 , 2019, Dagstuhl Seminar 19192

Visual Analytics for Sets over Time and Space

Organizers

Sara Irina Fabrikant (Universität Zürich, CH)
Silvia Miksch (TU Wien, AT)
Alexander Wolff (Universität Würzburg, DE)

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Documents

List of Participants
Shared Documents
Dagstuhl Seminar Schedule [pdf]

Motivation

Set systems are the generic data model for families of sets. A set is a collection of unique objects, called elements. An element may have attributes, membership functions, and rules. Such a complex data model asks for appropriate exploration methods. As with many types of data, set systems can vary over time and space. It is important, however, not to treat time and space as usual variables. Their special characteristics such as different granularities, time primitives (time points vs. intervals), hierarchies of geographic or administrative regions need to be taken into account. Visualizing and analyzing such changes is challenging due to the size and complexity of the data sets.

Sets systems can also be seen as hypergraphs where the vertices represent the ground elements and the edges are the sets. However, compared to conventional graphs that represent only binary relations (that is, sets with two elements), the visualization of general hypergraphs has received little attention. This is even more so when dealing with dynamic hypergraphs or hypergraphs that represent spatial information.

The main goal of this Dagstuhl Seminar is to foster co-operation and share knowledge between researchers with interests in set visualization coming from various different communities. Useful and usable set visualization can help us to better understand the underlying relationships in real-world categorical data sets. It can also allow for the discovery of patterns and the forecast of future trends in increasingly non-quantitative open datasets available online. Most existing approaches, methods, and tools, however, focus on static set systems and are limited in taking the complexity of temporal and geospatial characteristics into account. Therefore, we want:

  1. To bring together researchers working on visualization (i) from a theoretical point of view (graph drawing, computational geometry, and cognition), (ii) from a temporal point of view (visual analytics and information visualization over time, HCI), and (iii) from a space-time point of view (cartography, GIScience).
  2. To identify specific theoretical and practical problems that need to be solved in order to create dynamic and interactive set visualizations that take into account time and space. (We want to begin working on these problems during the seminar.)
  3. To formulate our findings as first steps to solving the problems under consideration and to define future research directions.

The format of the seminar will allow for presentations as well as planned and ad-hoc problem- solving sessions, with the intention of promoting exchange between the participants of diverse scientific backgrounds and to encourage the work on specific open problems. The first 1.5 days will be reserved for overview presentations from representatives of the different communities, for presenting open problems, and for forming interdisciplinary working groups that will focus on some of the identified open problems as a group. The remaining three days will comprise of working-group meetings and progress reports.

Motivation text license
  Creative Commons BY 3.0 DE
  Sara Irina Fabrikant, Silvia Miksch, and Alexander Wolff

Classification

  • Data Structures / Algorithms / Complexity
  • Networks
  • Society / Human-computer Interaction

Keywords

  • Information visualization
  • Visual analytics
  • Set visualization
  • Geovisualization
  • Cartography
  • Graph drawing

Documentation

In the series Dagstuhl Reports each Dagstuhl Seminar and Dagstuhl Perspectives Workshop is documented. The seminar organizers, in cooperation with the collector, prepare a report that includes contributions from the participants' talks together with a summary of the seminar.

 

Download overview leaflet (PDF).

Publications

Furthermore, a comprehensive peer-reviewed collection of research papers can be published in the series Dagstuhl Follow-Ups.

Dagstuhl's Impact

Please inform us when a publication was published as a result from your seminar. These publications are listed in the category Dagstuhl's Impact and are presented on a special shelf on the ground floor of the library.