Data Visualization

2006-06-07T21:27:40Z

Yijisoo:

Data Visualization

2006-06-07T21:26:49Z

Yijisoo:

2006-06-07T18:37:33Z

Yijisoo:

Information Visualization

2006-06-07T14:56:47Z

Yijisoo: wrong citation: Card et al. 1998 -> 1999: http://www.amazon.com/gp/product/1558605339/002-8804461-1508832?v=glance&n=283155

{{Definition|'''Information visualization ''(InfoVis)''''' produces (interactive) visual representations of [[abstract data]] to reinforce human cognition and [[perception]]; thus enabling the viewer to gain knowledge about the internal structure of the data and causal relationships in it.}}

== Definitions ==

{{Quotation|The use of computer-supported, interactive, visual representations of [[abstract data]] to amplify [[cognition]].|[Card et al., 1999]}}

{{Quotation|Information visualization, an increasingly important subdiscipline within [[HCI (Human-Computer Interaction)|HCI]], focuses on graphical mechanisms designed to show the structure of information and improve the cost of access to large data repositories. In printed form, information visualization has included the display of numerical data (e.g., bar charts, plot charts, pie charts), combinatorial relations (e.g., drawings of graphs), and geographic data (e.g., encoded maps). Computer-based systems, such as the information visualizer and [[Dynamic query|dynamic queries]] have added interactivity and new visualization techniques (e.g., 3D, animation).|[Averbuch, 2004]}}

{{Quotation|Visual representations of the semantics, or meaning, of information. In contrast to [[Scientific Visualization|scientific visualization]], information visualization typically deals with nonnumeric, nonspatial, and high-dimensional data.|[Chen, 2005]}}

{{Quotation|A method of presenting data or information in non-traditional, interactive graphical forms. By using 2-D or 3-D color graphics and animation, these visualizations can show the structure of information, allow one to navigate through it, and modify it with graphical interactions.|[UIUC DLI, 1998]}}

{{Quotation|As a subject in computer science, information visualization is the use of interactive, sensory representations, typically visual, of abstract data to reinforce cognition. Information visualization is a complex research area. It builds on theory in [[information design]], computer graphics, human-computer interaction and cognitive science. Practical application of information visualization in computer programs involves selecting, transforming and representing abstract data in a form that facilitates human interaction for exploration and understanding. Important aspects of information visualization are the interactivity and dynamics of the visual representation. Strong techniques enable the user to modify the visualization in real-time, thus affording unparalleled perception of patterns and structural relations in the abstract data in question. 
Although much work in information visualization regards to visual forms, auditory and other sensory representations are also of concern.|[Wikipedia, 2005]}}
<center>''Read full article on [[wikipedia:Information visualization|Wikipedia]]''</center>

{{Quotation|The study of how to effectively present information visually. Much of the work in this field focuses on creating innovative graphical displays for complicated datasets, such as census results, scientific data, and databases. An example problem would be deciding how to display the pages on a website or the files on a hard disk. Visualization techniques include selective hiding of data, layering data, taking advantage of 3-dimensional space, using scaling techniques to provide more space for more important information (e.g. Fisheye views), and taking advantage of psychological principles of layout, such as proximity, alignment, and shared visual properties (e.g. color).|[Usability First, 2003]}}

{{Quotation|'''Information visualization''', sometimes called InfoVis, is a special kind of visualization. Visualization is a part of computer graphics, which is in turn a subset of computer science. Visualization is defined as follows [Card et al., 1998]: Visualization is the use of interactive visual representations of data to amplify cognition. This means that the data is transformed into an image, it is mapped to screen space. The image can be changed by users as they proceed working with it. This interaction is important as it allows for constant redefinition of goals when new insight into the data has been gained. Visualization makes use of what is called external [[cognition]] [Card et al., 1998]. External resources are used for thinking. People are relieved from having to imagine everything. Instead they can just look at an image. This is only possible because human vision has a very large bandwidth, the largest of all senses [Card et al., 1998]. Information visualization is visualization of [[abstract data]]. This is data that has no inherent mapping to space. Examples for abstract data are the results of a survey or a database of the staff of a company containing names, addresses, salary and other attributes. Information visualization should be seen in contrast to [[Scientific Visualization|scientific visualization]], which deals with physically-based data. This kind of data is defined in reference to space coordinates, which makes it relatively easy to visualize in an intuitive way. The space coordinates in the dataset are mapped to screen coordinates. Examples are geographic data and computer tomography data of a body. Visualization of abstract data is not straightforward. One has to find a good way to map data values to screen space. It makes a difference whether the data is structured or unstructured. Examples for structured data are networks, software, and algorithms. This kind of data does not play a role in this thesis, only unstructured data is used here. Unstructured data is a collection of records with a number of different criteria in each record. The records can be, for instance, the individual fish in a fish-catch. Of each fish the following criteria can be recorded: species, weight, sex, and different measurements of length [...]. The records are arranged in rows, the criteria make up the columns of a table. The records are also called observations. The criteria are sometimes called variables, and sometimes dimensions. [...]|[Voigt, 2002]}}

{{Quotation|involves abstract, nonspatial data|[Tory and Möller, 2004]}}

== Overview ==

Application of information visualization on the computer involves providing means to transform and represent data in a form that allows and encourages human interaction. Data can therefore be analyzed by [[exploratory data analysis|''exploration'']] rather than pure reasoning; users can develop understanding for structures and connections in the data by observing the immediate effects their interaction has upon the visualization.

[[Image:zook_large.gif|right|thumb|250px|Information Visualization Example]][[Image:boom.gif|right|thumb|250px|Visualization of a directory structure using a botanical model]]

== Examples ==

Information visualization is applied in countless areas covering every industry and all tasks where understanding of the intrinsic structure in data is crucial.

Some prominent examples are:
*Economical/financial analysis
*Representation of large hierarchies
*Medical training/assistance
*Engineering/Physics

== See also ==
*[[Visualization]]
*[[Scientific Visualization]]

== References ==

*[Averbuch, 2004] Michael Averbuch, ''As you Like It: Tailorable Information Visualization'', Database Visualization Research Group, Tufts University, 2004.
*[Card et al., 1999] Card, S. and Mackinlay, J. and Shneiderman, B., Readings in Information Visualization: Using Vision to Think, Morgan Kaufmann Publishers, 1999.
*[Chen, 2005] Chen, C. [http://ieeexplore.ieee.org/xpls/abs_all.jsp?isnumber=31454&arnumber=1463074&count=14&index=3 Top 10 Unsolved Information Visualization Problems], IEEE Computer Graphics and Applications, 25(4):12-16, July-Aug. 2005.
*[Tory and Möller, 2004] Melanie Tory and Torsten Möller, Human Factors in Visualization Research, ''IEEEE Transactions on Visualization and Computer Graphics'', 10(1):72-84, January/February 2004.
*[UIUC DLI, 1998] University of Illinois at Urbana-Champaign Digital Libraries Initiative, UIUC DLI Glossary. Created: November 23, 1998. http://dli.grainger.uiuc.edu/glossary.htm
*[Usability First, 2003] Usability First, Usability Glossary. Retrieved at: 2003. http://www.usabilityfirst.com/glossary/main.cgi?function=display_term&term_id=5
*[Voigt, 2002]: Robert Voigt, [http://www.vrvis.at/via/resources/DA-RVoigt/masterthesis.html An Extended Scatterplot Matrix and Case Studies in Information Visualization], Master's thesis, Hochschule Magdeburg-Stendal, 2002, [http://www.vrvis.at/vis/resources/DA-RVoigt/node4.html ''Classification and Definition of Terms'']
*[Wikipedia, 2005] Wikipedia, Information visualization. Retrieved at: July 19, 2005. http://en.wikipedia.org/wiki/Information_visualization

== External links ==

*http://www.math.yorku.ca/SCS/Gallery/ has a lot of (positive and negative) examples including historical milestones.

[[Category:Glossary]]

Community, Overview, and Directory Links

2006-06-07T00:30:19Z

Yijisoo: /* Link Sites to Books and Publications */

*[http://www.infovis.net/ InfoVis.net] featuring the Digital Magazine '''Inf@Vis!'''
*[http://www.informationdesign.org/ InfoDesign: Understanding by Design]
*[http://www.infovis.org/ infovis.org] Information Visualization Resources
*[http://dmoz.org/Reference/Knowledge_Management/Knowledge_Discovery/Information_Visualization/ dmoz.org] Information Visualization resources at dmoz, the Open Directory
*[http://www.technorati.com/tag/visualization Technorati: Tag: visualization] Articles on techorati.com that are tagged by the term ''visualization''
*[http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&group=comp.graphics.visualization Usenet group comp.graphics.visualization]

== Personal Sites on Information Visualization ==
*[http://iv.homeunix.org/ John Goodall's website on information visualization]
*[http://www.kosara.net/research/infovis/ Robert Kosara's website on information visualization]
*[http://www.masternewmedia.org/information_design_and_data_visualization.htm Information Design and Data Visualization - Robin Good' Sharewood Tidings]
*[http://www.edwardtufte.com/bboard/q-and-a?topic_id=1 Ask E.T.] E. Tufte's moderated forum
*[http://www.wikiviz.org WikiViz] Wiki dedicated to personal research notes on Information Visualisation by Riccardo Mazza

== Link Sites ==
*[http://www.dcs.napier.ac.uk/~marting/linksFrame.html#infvis Martin Graham's Information Visualization Links]
*[http://vrg.dur.ac.uk/misc/PeterYoung/pages/work/info-vis.html Peter Young : Links to information visualisation resources]
*[http://www.cs.man.ac.uk/~ngg/InfoViz/ Information Visualization Resources]
*[http://isdale.com/jerry/VR/InfoVis_Links.html Jerry Isdale's Big List of InfoVis Links]
*[http://dmoz.org/Arts/Illustration/Specialized/Technical_and_Infographics/ Open Directory - Arts: Illustration: Specialized: Technical and Infographics]
*[http://graphics.stanford.edu/courses/cs348c-96-fall/resources.html Some Information Visualization Resources on the Web]
*[http://graphics.stanford.edu/courses/cs348c-96-fall/selbib.html Readings on Information Visualization]
*[http://www.cs.ubc.ca/~tmm/courses/cpsc533c-04-spr/resources.html Information Visualization Resources]
*[http://www.dynamicdiagrams.com/about/resources_links.html Dynamic Diagrams > Recommended Links]
*[http://vlado.fmf.uni-lj.si/vlado/vladodam.htm Vladimir Batagelj - Data Mining and Visualization]
*[http://www.brunel.ac.uk/~cssrtfc/iv_links.htm Timothy Cribbin - InfoVis Links]
*[http://digitalmind.de/limited/showgroup_29_2.html digitalmind.de // Recommendations] (in German)
*[http://tecfa.unige.ch/guides/infoviz.html Dao's InfoViz pointers - TECFA]
*[http://www.phil.uni-sb.de/FR/Medienzentrum/Grafikexperiment/verweise.html#guideline Beiträge zu: Graphische Präsentation von Daten] (in German)
*[http://www.cs.umd.edu/class/spring2005/cmsc838s/resources.htm Resources for CMSC838S — Information Visualization]

== Link Sites to Books and Publications ==
*[http://www.infovis.net/printRec.php?rec=llibre&lang=2 InfoVis Books]
*[http://people.cs.vt.edu/%7Enorth/infoviz/ Readings in Information Visualization (Chris North, Virginia Tech)]
*[http://www.lis.uiuc.edu/~twidale/irinterfaces/1overview.html Overview Articles for Graphical Interfaces]
*[http://www.citeulike.org/group/infovis CiteULike InfoVis Reading Group]

[[Category:Web resources]]

User talk:Iwolf

2006-06-06T14:26:47Z

Yijisoo:

iWolf's user talk page...

I really like this wiki page. Thank you for your efforts! I'll try to contribute little bit. [[User:Yijisoo|Yijisoo]]

Walser Andreas

2006-06-06T03:03:17Z

Yijisoo:

# Nachname: Walser
# Vorname: Andreas
# Matrikelnummer: 0526699
# Studienkennzahl:532
# E-mail: andy??raeumlich.net
# Adresse: Neustiftgasse 83

[[Wiki Link]]

[[Teaching:TUW - UE InfoVis WS 2005/06 - Gruppe XX|Gruppe XX (<NACHNAME1>, <NACHNAME2>, <NACHNAME3>, <NACHNAME4> )]]

[[Category: Persons]]

2006-06-05T16:30:00Z

Yijisoo:

Center for Interactive Systems Engineering

2006-06-05T16:29:06Z

Yijisoo:

The mission of Center for Interactive Systems Engineering is to investigate the design, implementation, and evaluation of interactive, next-generation computing solutions in complex domains including, but not limited to, health care and health care delivery, with the purpose of supporting the development of systems that are both usable and accessible. This is accomplished through research that is focused on the psychological processes underlying the interaction of people with complex systems, particularly computer systems, with the ultimate goal of combining robust empirical results with the development of engineering models of human performance that can aid in the design of real-world systems. If you want to have more information, please visit [http://cise.bme.gatech.edu/].

[[Category: Institutions]]

Center for Interactive Systems Engineering

2006-06-05T16:29:03Z

Yijisoo:

The mission of Center for Interactive Systems Engineering is to investigate the design, implementation, and evaluation of interactive, next-generation computing solutions in complex domains including, but not limited to, health care and health care delivery, with the purpose of supporting the development of systems that are both usable and accessible. This is accomplished through research that is focused on the psychological processes underlying the interaction of people with complex systems, particularly computer systems, with the ultimate goal of combining robust empirical results with the development of engineering models of human performance that can aid in the design of real-world systems. If you want to have more information, please visit [http://cise.bme.gatech.edu/].

[[Category: Institution]]

Center for Interactive Systems Engineering

2006-06-05T16:28:52Z

Yijisoo:

The mission of Center for Interactive Systems Engineering is to investigate the design, implementation, and evaluation of interactive, next-generation computing solutions in complex domains including, but not limited to, health care and health care delivery, with the purpose of supporting the development of systems that are both usable and accessible. This is accomplished through research that is focused on the psychological processes underlying the interaction of people with complex systems, particularly computer systems, with the ultimate goal of combining robust empirical results with the development of engineering models of human performance that can aid in the design of real-world systems. If you want to have more information, please visit [http://cise.bme.gatech.edu/].

[[Category: Institute]]