Information visualization is the study of (interactive) visual representations of abstract data to reinforce human cognition. The abstract data include both numerical and non-numerical data, such as text and geographic information. However, information visualization differs from scientific visualization: "it’s infovis when the spatial representation is chosen, and it’s scivis when the spatial representation is given". More definitions with references can be found at.
Read more about Information Visualization: Overview, History, Specific Methods and Techniques, Applications, Experts, Organization
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“Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.”
—Samuel Johnson (1709–1784)