A Nested Model for Visualization Design and Validation
IEEE TVCG (Proc. InfoVis 2009), 15(6):921-928, 2009.
Paper
Abstract
We present a nested model for the visualization design and validation with
four layers: characterize the task and data in the vocabulary of the problem domain, abstract into operations
and data types, design visual encoding and interaction techniques, and
create algorithms to execute techniques efficiently. The output from a
level above is input to the level below, bringing attention to the
design challenge that an upstream error inevitably cascades to all
downstream levels. This model provides prescriptive guidance for
determining appropriate evaluation approaches by identifying threats
to validity unique to each level. We also provide three recommendations motivated by this model:
authors should distinguish between these levels when claiming
contributions at more than one of them, authors should explicitly
state upstream assumptions at levels above the focus of a paper, and
visualization venues should accept more papers on domain
characterization.
Figures
- Figure 1: Our model of visualization creation has four nested layers.
- Figure 2: Threats and validation in the nested model.
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