Paulo Pombinho

Paulo Pombinho

PhD in Informatics

About

27
Publications
5,588
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
148
Citations
Additional affiliations
February 2016 - present
University of Lisbon
Position
  • Invited Researcher
September 2006 - February 2016
University of Lisbon
Position
  • Researcher

Publications

Publications (27)
Article
Maturity models define a series of levels, each representing an increased complexity in information systems. Data Science appears in the Business Intelligence (BI) and Business Analytics (BA) literature. This work applies the _IABE maturity model, which includes two additional levels: Data Engineering (DE) at the bottom and Business Experimentation...
Chapter
Data quality is essential for a correct understanding of the concepts they represent. Data mining is especially relevant when data with inferior quality is used in algorithms that depend on correct data to create accurate models and predictions. In this work, we introduce the issue of errors of identifiers in an anonymous database. The work propose...
Chapter
Education covers a range of sectors from kindergarten to higher education. In the education system, each grade has three possible outcomes: dropout, retention and pass to the next grade. In this work, we study the data from the Department of Statistics of Education and Science (DGEEC) of the Education Ministry. DGEEC maintains those outcomes for ea...
Article
Full-text available
The evolution of mobile devices and the development of high speed wireless networks have supported a widespread use of these devices with increasingly more complex applications. This reality has fostered the research in the field of information visualization in mobile devices. However, the limited screen space, resource constraints and interaction...
Conference Paper
Full-text available
When exploring map information on mobile devices, relevant points of interest (POIs) are often located off-screen. Despite the existence of several techniques that allow the exploration of the surrounding areas, none represents the POIs' relevance. Furthermore, when the number of POIs increases, the visualization of the information often becomes un...
Article
Full-text available
The increasingly large quantities of points of interest make choosing between all the available information a painful task for the users. This limitation is aggravated by the reduced screen space of most mobile devices. To minimize these issues, it is fundamental that the information shown to the user is relevant, helping them in making good choice...
Conference Paper
Full-text available
Overview & Detail is a visualization technique suitable for finding points of interest (POIs) located outside the detailed view. In this study we aim to analyze the effects of the size of the overview on the users' performance on mobile devices. For that purpose we compared three different interfaces, a traditional one, with smaller dimensions over...
Article
Full-text available
Applications that allow the users to search for nearby points of interest have, recently, become very popular amongst mobile device users. However, the increasing amount of available information and the limitations of current mobile devices can hinder an efficient and helpful user experience. It is fundamental that what is shown to the user is rele...
Conference Paper
Full-text available
The evolution of mobile devices, especially the integration of sensors, is fostering the development of context aware visualization applications. The adaptation to usage contexts is crucial to overcome the diverse limitations that exist in a mobile device, namely the screen size. However, most of the currently develop applications focus on specific...
Conference Paper
Full-text available
In this paper we present an interactive point of interest query interface, based on the location and orientation of the user. This interface gives clues about the position, relative to the user, of all the points of interest in the vicinity. The interaction provided can also be used to complement the presentation of points of interest on a map, hel...
Conference Paper
Full-text available
The reduced display size of handheld mobile devices imposes severe usability and visualization problems. Adaptation to specific usage context is a key feature to overcome usability and display limitations on mobile devices. I intend to explore adaptive mobile visualization and develop a framework that can efficiently manage the adaptation methods u...
Article
Full-text available
Although location based applications have been gaining popularity, most positioning devices do not work when in an indoor environment, hindering the development of indoor location based applications. In this paper we propose a technique, based on the detection of footsteps, and the direction in which they were taken by the user, to be able to calcu...
Conference Paper
O objectivo do nosso trabalho é mostrar pontos de interesse sobre um mapa de um modo que seja inteligível para o utilizador quando este utiliza um computador de secretária ou um computador portátil. São tidos em consideração dois aspectos, para os quais se apresentam abordagens: primeiro, os símbolos relativos aos pontos de interesse podem ocultar...
Conference Paper
Full-text available
The increasing popularity of mobile devices has fostered the development of visualization applications for these devices. However, the reduced screen size and different interaction devices, which people are not familiarized, present some challenges to visualization in a mobile environment. This paper describes how, as a proof of concept, a combinat...
Article
Full-text available
Resumo. Nos últimos anos a procura de soluções para aplicações adaptáveis ao contexto tem revelado avanços consideráveis. Contudo, a investigação nesta área tem-se centrado em contextos computacionais ou contextos de localização do dispositivo. A adaptação das técnicas de visualização de informação para dispositivos móveis deverá ser estendida a ou...
Conference Paper
Full-text available
Visualization of geo-referenced information on mobile devices can be useful in diverse areas. These applications require a user-friendly interface to enable querying the data interactively and the generation of intelligible images. Moreover, they must deal with the limitations of mobile devices, such as small screen size, and the context of mobilit...
Article
Full-text available
modo a reduzir o número de elementos representados. A interface de especificação de pesquisas é construída dinamicamente, no idioma seleccionado, em função da meta-informação sobre a organização dos dados. Palavras-chave Visualização de informação geo-referenciada, dispositivos móveis, interfaces adaptativas, mecanismos de fil-tragem. 1. INTRODUÇÃO...
Conference Paper
Full-text available
The visualization of geo-referenced information on a map has become an essential method to help the users to get the intended information. The adaptation of visualization techniques for mobile devices, such as, PDA and mobile phones make this type of applications ubiquitous. However, the context of mobility and the limitations of mobile devices, su...
Article
Full-text available
Resumo A visualização de informação georeferenciada sobre um mapa tem-se tornado num método essencial para ajudar os utilizadores a obter intuitivamente e produtivamente a informação pretendida. A adaptação das técnicas de visualização para dispositivos móveis, tais como, PDA (Personal Digital Assistant) e telefones móveis inteligen- tes deixa ante...
Article
Full-text available
The number of mobile devices and associated services has recently been growing considerably. This growth has been changing the way people access information. The technological advances of mobile devices offer new op- portunities to areas where geographic data has an important role. PDA, mobile phones and other portable de- vices are increasingly be...
Article
Full-text available
Sumário Os utilizadores de sistemas de pesquisa de imagens na Web expressam as suas necessidades através de interro-gações que descrevem as imagens pretendidas. A análise detalhada destas interrogações e a observação do comportamento dos utilizadores na utilização destes sistemas são aspectos fundamentais não só para a compre-ensão das necessidades...
Article
Full-text available
The increasing use of mobile devices and their evolution, with the appearance of integrated digital cameras and location and orientation sensors, encourage the development of new forms of interaction with the devices and can also optimize queries to the available information. In this paper, we present and evaluate an interactive point of interest q...
Conference Paper
Full-text available
The complexity of presenting and exploring large amounts of graphical data, on mobile devices, increases due to their small screen size. To mitigate this problem several approaches have been proposed to give clues about objects that are located off-screen. In this paper we present a user study comparing the Halo off-screen visualization technique w...
Article
Full-text available
Location based services (LBS) are now very common, but are mainly developed for outdoor areas. Despite the existence of some indoor LBS, they either require physical building infrastructures or employ a complex and expensive conjunction of positioning systems to achieve good accuracy. Furthermore, they are not commonly used for both indoor and outd...

Network

Cited By