contribution categories 2

design study: describe and evaluate hypothesis
ethnographic uncovering of user's tasks, needs
discuss/justify/evaluate choices made
relate visual encodings and interaction techniques to requirements of target task		
judge: novelty strengthens, but not mandatory
lessons learned, principles discovered/gleaned
not application-focused case study
reporting use of technique X in domain Y
instead, useful artifact as means towards end
end: infovis prescriptive design guidelines
model
new theoretical framework 
hope: directed vs. random param space walk
blending many in one paper particularly strong

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