Lecture 20 Ying Zhu Georgia State University CSC4730/6730 Scientific Visualization Text Visualization Lecture 20 Ying Zhu Georgia State University

Text visualization Text has become the dominate form of communication as Web, Email, text messaging, online chat, and Twitter become pervasive. Text visualization is considered a difficult task because There is no established convention for mapping text to visual elements The relationship among words or sentences are often complicated and hidden

Text visualization The purpose of this lecture is to review some of the existing text visualization techniques

Text visualization techniques Visualizaing word frequency Tag clouds Wordles Word relationship Word Spectrum Diagrams Word Association Phrase Net Word Tree

Tag Cloud http://manyeyes.alphaworks.ibm.com/manyeyes/page/Tag_Cloud.html Simple Quick to identify most frequently used (and perhaps emphasized) words Is it more effective than simple frequency list?

Wordle http://manyeyes.alphaworks.ibm.com/manyeyes/page/Wordle.html Interesting, but not quite readable Efficient use of typographical space

Phrase Net http://manyeyes.alphaworks.ibm.com/manyeyes/page/Phrase_Net.html Visualize the relationships between different words used in a text

Word Trees http://manyeyes.alphaworks.ibm.com/manyeyes/page/Word_Tree.html Let you pick a word or phrase and shows you all the different contexts in which it appears. The contexts are arranged in a tree-like branching structure to reveal recurrent themes and phrases.

Text Explorer http://www.neoformix.com/2007/ATextExplorer.html

Shared Word Diagrams http://www.neoformix.com/Projects/DoubleDocumentSharedWordDiagrams/index.html

Digg Story Graph http://www.neoformix.com/Projects/DiggViz2/index.html

Document Arc Diagrams http://www.neoformix.com/Projects/DocumentArcDiagrams/index.html

Transcript Analyzer http://www.nytimes.com/interactive/2007/10/30/us/politics/20071030_DEBATE_GRAPHIC.html#transcript

Transcript Analyzer http://www.neoformix.com/Projects/TranscriptAnalyzer/index.html

Document Contrast Diagram http://www.neoformix.com/2008/DocumentContrastDiagrams.html

Clustered Word Clouds http://www.neoformix.com/2008/ClusteredWordClouds.html

Sentence Bars http://www.neoformix.com/2008/SOTUSentenceBars.html

Word Cloud Comparison http://www.neoformix.com/2008/CloudComparison3.html

OscarTwitterMap http://www.neoformix.com/Projects/OscarTwitterMap/

Twitter Map http://www.neoformix.com/2009/Snowmageddon.html

TwitArc http://www.neoformix.com/Projects/TwitArcs/TwitArcs.html

Literary Organism Map http://www.itsbeenreal.co.uk/

Sentence Drawing http://www.itsbeenreal.co.uk/index.php?/wwwords/sentence-drawings/

Sentence length http://www.itsbeenreal.co.uk/index.php?/wwwords/sentence-length/

Other works by Stefanie Posavec http://www.itsbeenreal.co.uk/

Sentence diagrams Analyzing a sentence and visualize its structure http://en.wikipedia.org/wiki/Sentence_diagram http://homeworktips.about.com/od/englishhomework/ss/diagram.htm

Sentence diagrams Examples: http://www.geocities.com/gene_moutoux/diagrams.htm http://grammar.ccc.commnet.edu/grammar/diagrams/diagrams.htm “Diagramming Sarah (Palin)”: http://www.slate.com/id/2201158/

Summary There are lots of text visualization techniques Art work or useful tools? Need to investigate their effectiveness

References http://www.timshowers.com/2008/08/visualization-strategies-text-documents/