Space, time and visual analytics

Challenging problems of geospatial visual analytics

Introduction Visual analytics aims at combining the strengths of human and electronic data processing. This is achieved by means of visualization and interactive visual interfaces, which allow humans and computers to converse and cooperate (Keim et al. 2008). Visual analytics is conceived as a multidisciplinary research field in which scientists specializing in information visualization, scient...

Visual analytics approaches for descriptor space comparison and the exploration of time dependent data

Space-Time Kernel Density Estimation for Real-Time Interactive Visual Analytics

We present a GPU-based implementation of the Space-Time Kernel Density Estimation (STKDE) that provides massive speed up in analyzing spatialtemporal data. In our work we are able to achieve subsecond performance for data sizes transferable over the Internet in realistic time. We have integrated this into web-based visual interactive analytics tools for analyzing spatial-temporal data. The resu...

Challenging problems of geospatial visual analytics

Visual analytics aims at combining the strengths of human and electronic data processing. This is achieved by means of visualization and interactive visual interfaces, which allow humans and computers to converse and cooperate [1]. Visual analytics is conceived as a multidisciplinary research field in which scientists specializing in information visualization, scientific visualization, and geog...

Analysis of Student Retention and Drop-out using Visual Analytics

Student retention is an important measure for higher education institutions. Exploration and interactive visualization of multivariate data without significant reduction of dimensionality remains a challenge. Visual analytics tools like Motion Charts show changes over time by presenting animations within twodimensional space and by changing element appearances. In this paper, we present a new v...

Visual Analytics Approach to User - Controlled Evacuation Scheduling Gennady

Application of the ideas of visual analytics is a promising approach to supporting decision making, in particular, where the problems have geographic (or spatial) and temporal aspects. Visual analytics may be especially helpful in time-critical applications, which pose hard challenges to decision support. We have designed a suite of tools to support transportationplanning tasks such as emergenc...