Text Visualization Lecture 11

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Presentation transcript:

Text Visualization Lecture 11 Visualization for Text Analysis by Hearst http://searchuserinterfaces.com/book/sui_ch11_text_analysis_visualization.html Visualization of Document Attributes Some Tools

Text & Document Visualization Text not pre-attentive Text = Abstract Concepts = Very High Dimensionality Multiple & ambiguous meanings Combinations of abstract concepts more difficult to visualize Different combinations imply different meanings Language only hints at meaning  based on common understanding “How much is that doggy in the window?” Facilitate Information Retrieval Collection Overview Visualize which parts of query satisfied by document / collection Understand why documents retrieved Cluster Documents Based on Words in Common Finds overall similarities among groups of documents Picks out some themes, ignores others Map Clusters onto 2D or 3D Representation Minimize time/effort to decide which documents to examine

How to Use Visualization to Support Search Source Thomas Mann (PhD Thesis Uni of Konstanz) Visualization of search results from the World Wide Web http://www.ub.uni-konstanz.de/v13/volltexte/2002/751//pdf/Dissertation_Thomas.M.Mann_2002.V.1.07.pdf

Visualization of Document Attributes Thumbnails SeeSoft

Visualization of Document Attributes  Document Lens Problem: Text can be too small to read  Focus + Context Fisheye Distortion Does it work?

Visualization of Document Attributes  Perspective Wall

Visualization of Document Attributes  Bar Graphs [Veerasamy 1996] / [Veerasamy, Belkin 1996]

Visualization of Document Attributes  Stacked Bar Graphs VQRa of the WInquery system [Shneiderman, Byrd, Croft 1997]

Visualization of Document Attributes  NIRVE & R-Wheels

Visualization of Document Attributes  NIRVE

Visualization of Document Attributes  NIRVE

Visualization of Document Attributes  RankSpiral

Visualization of Document Attributes  RankSpiral

Visualization of Document Attributes  TileBars

Visualization of Document Attributes  Table Lens

Visualization of Document Attributes  Parallel Coordinates

Text Visualization – Some Tools Wordle – http://www.wordle.net/ TextArc – http://www.textarc.org/ CapitolWords – http://capitolwords.org/ NYTimes State of the Union – http://www.nytimes.com/ref/washington/20070123_STATEOFUNION.html