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Document contrast diagram

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Document contrast diagram
Document contrast diagrams use the familiar bubble technique and effective use of colour to contrast topic usage in two bodies of text. Gives a visual summary of the content of two text documents that illustrates shared words, words that are unique to one document or the other, word frequency, relative size of the two documents, distribution of emotional tone within the documents, related words based on co-occurrence, and the most common word in each document segment. This example is the 2007 and 2008 US State of the Union (SOTU) Addresses.
Visual types
Level of expertise
Interactive features
Yes, unspecified.
Benefits & pitfalls to avoid
  • Using area or volume to represent data can distort data values, and exaggerate differences between values. For example, if the radius of the circle is used to represent data values, the area of the circle will quadruple if the data values double. There is also an issue of 'perceptual scaling' - the tendency of people to underestimate areas.
Create your own
  • Bubble charts can be created in a range of standard data applications such as Excel.