Expressiveness

A visualization is considered to be expressive if the relevant information of a dataset (and only this) is expressed by the visualization. The term "relevant" implies that expressiveness of a visualization can only be assessed regarding a particular user working with the visual representation to achieve certain goals.

Expressiveness criteria identify graphical languages that express the desired information. […] A set of facts is expressible in a language if it contains a sentence that (1) encodes all the facts in the set, (2) encodes only the facts in the set.

[Mackinlay, 1986]

Don Norman calls this "Appropriateness principle" in [Norman, 1993]:

Appropriateness principle: The representation used by the artifact should provide exactly the information acceptable to the task: neither more nor less.

[Norman, 1993]

see also: Effectiveness, Appropriateness

References

• [Mackinlay 1986] Jock Mackinlay. Automating the Design of Graphical Presentations of Relational Information. ACM Transactions on Graphics, 5(2):110-141, 1986.
• [Norman, 1993] Norman, Donald. Things That Make Us Smart, Addison Wesley. 1993, p. 97
• [Schumann and Müller, 2000] Heidrun Schumann and Wolfgang Müller, Visualisierung - Grundlagen und allgemeine Methoden. Springer-Verlag, Berlin, 2000.
• [Tominski, 2006] Christian Tominski, Event-Based Visualization for User-Centered Visual Analysis, PhD Thesis, Institute for Computer Science, Department of Computer Science and Electrical Engineering, University of Rostock, 2006.