Anderson Marques

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With the spread of sales in electronic commerce and the popularization of interactive devices for digital television, grows the demand for applications that supports services over this platform, considering that television devices are present in 95% of brazilian households. In order to supply this demand, this work proposes a visualization interface(More)
The goal of this paper is to present PRISMA Mobile, an information visualization tool for android-based tablets. The application is based on a client-server model where the client uses as few resources as possible in order to preserve memory, battery and other device resources. To get better profit from the device, the tool uses the treemap technique(More)
-Cyber-Physical Systems and Ambient Intelligence are two of the most important and emerging paradigms of our days. The introduction of renewable sources gave origin to a completely different dimension of the distribution generation problem. On the other hand, Electricity Markets introduced a different dimension in the complexity, the economic dimension. Our(More)
Digital TV interactivity implies a great potential for social and digital inclusion, especially in a country like Brazil, where 95% of households have at least one TV. Due to the importance of Interactive Digital TV in this scenario, it is necessary not only to provide new applications to support services on TV, but also to evaluate the technological(More)
This paper presents results of head tracker and speech commands interaction evaluation in information visualization context at low level task taxonomy. The head tracker is used to move a pointer and the voice commands to perform actions. In the evaluation, we used 20 public information visualization techniques, 62 simple tasks (aiming low-level(More)
Frequency-based statistical charts are the most widespread visualizations and the preferred of Infovis novices. They are important in depicting categorical data and providing data abstraction on large datasets. The drill down feature enables better visual scaling by allowing navigation through aggregation hierarchies. In this paper we discuss design(More)
This paper discusses the challenges faced by users and tools in visual analysis of large datasets containing time-oriented data. In order to illustrate the discussion, we solved the mini-challenge 2 (Hospitalization Records) of IEEE VAST 2010 Challenge using the PRISMA tool. PRISMA is an information visualization tool that supports multiple coordinated(More)