a graph based abstraction of textual concordances and two renderings for their interactive...
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A Graph Based Abstraction of Textual Concordances and
Two Renderings for their Interactive Visualisation
Saturnino Luz
School of Computer Science and Statistics
Trinity College Dublin, Ireland
Shane Sheehan
School of Computer Science and Statistics
Trinity College Dublin, Ireland
AVI 2014
A Graph Based Abstraction of Textual Concordances and
Two Renderings for their Interactive Visualisation
What is a Concordance?
● An index pointing to each occurrence of a keyword in a corpus
● Keyword-in-context (KWIC)
Recent Development● “Word Tree” [1,2]
[1] Wattenberg, M., and Viegas, F. B. The word tree, an interactive visual concordance. IEEE Transactions on Visualization and Computer Graphics 14, 6 (2008),1221–1228.
[2] www.manyeyes.com
Data State Reference Model
A Graph Based Abstraction of Textual Concordances and
Two Renderings for their Interactive Visualisation
Bi-Directional Hirachical Display
Mosaic: Frequency
● Sorted and scaled by column frequency
Relative Frequency Scaling
“the” corpus occurrences = 10000
pos -1 occurrences = 50
Score = 50/5000 = 0.005
“historical” corpus occurrences = 70
pos -1 occurrences = 11
Score = 11/70 = 0.157
● Scale by scores of words in column ● Normalised for display height
Concordance position frequencyCorpus frequency
Mosaic: Relative Frequency
Juxtaposed views
● A design pattern of composite visualization views
● Combination of KWIC and Mosaic views
● Overview and Detail
● Interaction with one view affects the other
● TEC corpus browser and Prefuse visualisation framework
A Graph Based Abstraction of Textual Concordances and
Two Renderings for their Interactive Visualisation
Context Tree
Concatenated Context Trees● Keyword defined in terms of eccentricity
Concatenated Context Trees● Contextual edges guarantee sentence retrieval
Concordance Graph● Contextual edges guarantee sentence retrieval
Thank you!!!
Any Questions?
A Graph Based Abstraction of Textual Concordances and
Two Renderings for their Interactive Visualisation