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English
Etymology
Coined by John W. Tukey as a blend of scatterplot + cognostic (another Tukey coinage).[1]
Noun
scagnostic (plural scagnostics)
- (mathematics) A heuristic used to automatically analyse variables in a large dataset in order to determine which scatterplots are to be visualised in a scatterplot matrix.
References
- ^ John W. Tukey (1985) “Computer Graphics and Exploratory Data Analysis”, in William S. Cleveland, editor, The Collected Works of John W. Tukey: Graphics 1965-1985, Volume 5:
For large values of p […] it may not be worth our attention to look at every scatter […] We need to make the computer help us more, before it makes pictures for us – we need "cognostics" in the sense discussed above.
What we need are diagnostics intended for computer interpretation, conveniently shortened from "computer guiding diagnostics" to "cognostics." We shall distinguish cognostics used to guide suppression or presentation of scatters as "scagnostics".
Any of the forms of enhancement mentioned above could be used as a basis for a scagnostic, as could others.
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