Tag: Featured

Information Visualization

Definition Information Visualization is a branch of Human-Computer Interaction field with origins in late ’80. It exploits graphics to help people comprehend and interpret data. If helps in forming mental models of the data and obtain a better understanding of specific features of the data. Other definitions Information Visualization is a relatively new discipline concerned with the creation of visual artifacts aimed at amplifying cognition. A number of new definitions have been produced to define […]

Tasks

Contents 1 Visualisation tasks defined by B. Shneiderman (1996) 2 Visualisation tasks from Wehrend and Lewis (1990) (Cognitive tasks) 3 Task taxonomy by Zhou and Feiner (1998) 4 Low-level user analytic tasks defined by Amar et al. (2005) (Analytic task taxonomy) Visualisation tasks defined by B. Shneiderman (1996) Overview Zoom Filter Details-on-demand Relate History Extract Visualisation tasks from Wehrend and Lewis (1990) (Cognitive tasks) The task classification of Wehrend and Lewis (1990) is a low-level, domain-independent taxonomy of tasks […]

People

People giving courses on IV Ben Bederson, Director of the Human-Computer Interaction Lab at the University of Maryland Katy Börner, Associate Professor of Information Science at Indiana University Courses: http://ella.slis.indiana.edu/~katy/teaching/index.html#Courses Judith Donath, Assistant Professor of Media Arts And Sciences, Director of the Sociable Media Group at the MIT Media Lab Courses: http://smg.media.mit.edu/classes/SocialVis04/ George W. Furnas, Professor Computer Science and Engineering, University of Michigan Marti Hearst, Associate Professor at SIMS, UC, Berkeley Courses:  http://www.sims.berkeley.edu/courses/is247/f05/schedule.html                http://www.sims.berkeley.edu/courses/is247/s04/index.html Alfred Kobsa, Professor in the Donald Bren School […]

Information Visualization Evaluation

Evaluations of Information Visualization is one of the hottest topic of the field. Several visualization tools have been developed recently, but little effort has been made to evaluate the effectiveness and utility of the tools. Contents 1 Evaluation criteria 2 Techniques 3 Some metrics 4 Conferences and pubblications 5 Papers 6 People 7 Evaluation of Visualizations for information retrieval Evaluation criteria Some criteria that can be addressed in a evaluation process are the following: Functionality – to what extend the system provides the […]

Visual Encoding

The visual encoding is the way in which data is mapped into visual structures, upon which we build the images on a screen. It is defined in term of: Spatial substrate Graphical marks Graphical properties of the marks Spatial substrate The spatial substrate define a position of the space where we collocate graphical marks. The space is defined in term of axes. Card et al. (1999) define four elementary types of exes: Unstructured axis (no […]

Graphics

Graphics are: a schematic representation of the reality a mean from which people construct internal mental representation of the world We refer with the term graphics to representations where the primary purpose is art or entertainment, while the term information graphics is used for graphics with the purpose of visually present information Information graphics are useful because: may illustrate one or more relationships among entities represented may be a shorthand way to present information allows […]

Books on Information Visualisation

Contents 1 Classic books on the art of graphics: 2 Books specific on Information Graphics:   Classic books on the art of graphics: Jacques Bertin. Semiology of Graphics: Diagrams, Networks, Maps. The University of Wisconsin Press, 1983. ISBN 0299090604 (out of print). Jacques Bertin. Graphics and Graphic Information Processing. Walter de Gruyter, Berlin, 1981. ISBN 3110069016 Edward R. Tufte. The Visual Display of Quantitative Information. Graphics Press, Cheshire, Connecticut, USA, 1983. ISBN 0961392142 Edward R. […]

Visualization of Web Search Results

Contents 1 Visualization of search results 2 Visual clustering 3 Adaptive Information Retrieval 4 Other resources 5 Others 6 Papers Visualization of search results Envision InfoCrystal, and MetaCrystal, by A. Spoerri. Insyder oSkope TileBars. Vibe VisMeB Visual clustering One of the uses of Information Visualization on Information Retrival is the clustering of the found pages. Some examples are: Kartoo WebBrain Grokker Anacubis NIRVE (NIST Information Retrieval Visualization Engine). Mooter – Ujiko – Quintura – A bunch of paper have been published: Integration of Visualization with Search […]

Applications in Other Disciplines

Contents 1 Information Visualisation and the Semantic Web 1.1 Applications 1.2 Links to other tools 1.3 Pubblications 2 Information Visualisation in Data Mining 3 Conversations 4 WWW Information Visualisation and the Semantic Web The Semantic Web is a new research mainstream started on a vision of Tim Berners-Lee in 1998. The main idea of the Semantic Web is to take advantage of the huge quantity of information provided by the Web and make it available into a format “understandable” to computer programs. […]