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dc.contributor.authorLiu, Zhichengen_US
dc.date.accessioned2012-06-06T16:48:58Z
dc.date.available2012-06-06T16:48:58Z
dc.date.issued2012-04-04en_US
dc.identifier.urihttp://hdl.handle.net/1853/43687
dc.description.abstractTabular data is pervasive in the form of spreadsheets and relational databases. Although tables often describe multivariate data without explicit network semantics, it may be advantageous to explore the data modeled as a graph or network for analysis. Even when a given table design conveys some static network semantics, analysts may want to look at multiple networks from different perspectives, at different levels of abstraction, and with different edge semantics. This dissertation is motivated by the observation that a general approach for performing multi-dimensional and multi-level network-based visual analysis on multivariate tabular data is necessary. We present a formal framework based on the relational data model that systematically specifies the construction and transformation of graphs from relational data tables. In the framework, a set of relational operators provide the basis for rich expressive power for network modeling. Powered by this relational algebraic framework, we design and implement a visual analytics system called Ploceus. Ploceus supports flexible construction and transformation of networks through a direct manipulation interface, and integrates dynamic network manipulation with visual exploration for a seamless analytic experience.en_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectTabular dataen_US
dc.subjectNetwork modelingen_US
dc.subjectVisual analyticsen_US
dc.subjectInformation visualizationen_US
dc.subject.lcshInformation science
dc.subject.lcshCharts, diagrams, etc.
dc.titleNetwork-based visual analysis of tabular dataen_US
dc.typeDissertationen_US
dc.description.degreePhDen_US
dc.contributor.departmentComputingen_US
dc.description.advisorCommittee Chair: Stasko, John; Committee Member: Foley, James; Committee Member: Gilbert, Eric; Committee Member: Navathe, Shamkant; Committee Member: Park, Haesun; Committee Member: van Wijk, Jarkeen_US


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