International Journal of Human-computer Studies / International Journal of Man-machine Studies, 2000
A variety of information visualization tools have been developed recently, but relatively little ... more A variety of information visualization tools have been developed recently, but relatively little e!ort has been made to evaluate the e!ectiveness and utility of the tools. This article describes results from two empirical studies of two visualization tools for depicting hierarchies, in particular, computer "le and directory structures. The two tools examined implement space-"lling methodologies, one rectangular, the Treemap method, and one circular, the Sunburst method. Participants performed typical "le/directory search and analysis tasks using the two tools. In general, performance trends favored the Sunburst tool with respect to correct task performance, particularly on initial use. Performance with Treemap tended to improve over time and use, suggesting a greater learning cost that was partially recouped over time. Each tool a!orded somewhat di!erent search strategies, which also appeared to in#uence performance. Finally, participants strongly preferred the Sunburst tool, citing better ability to convey structure and hierarchy.
The wide accessibility of the World Wide Web makes it a perfect base for developing computer scie... more The wide accessibility of the World Wide Web makes it a perfect base for developing computer science courseware modules.
... For example, the system of indexes in ARCHIE, which helped architectural students design libr... more ... For example, the system of indexes in ARCHIE, which helped architectural students design libraries, helped students develop an understanding of the issues that need to be addressed in designing libraries, the kinds of spaces libraries have, and the perspectives different kinds ...
Collaborative Support for Learning in Complex Domains Mark Guzdial1, Jennifer Turns2, Noel Rappin... more Collaborative Support for Learning in Complex Domains Mark Guzdial1, Jennifer Turns2, Noel Rappin1, and David Carlson1 1 College of Computing, Georgia Institute of Technology 2 School of Industrial and Systems Engineering, Georgia Institute of Technology Abstract ...
... Discussion forums that embody these features are examples of computer-mediated anchored discu... more ... Discussion forums that embody these features are examples of computer-mediated anchored discussion forums. ... Discussion threading and note persistence are two discussion managementfeatures that computer-mediated discussion forums can provide. ...
Abstract 1. Reports on the evolution of the Collaborative and Multimedia Interactive Learning Env... more Abstract 1. Reports on the evolution of the Collaborative and Multimedia Interactive Learning Environment (CaMILE) and the strategies that were developed to get students to engage in domain-relevant discussions. CaMILE is an on-line forum for collaboration and reflection. Four attempts to use CaMILE are described. The 1st 2 attempts to use CaMILE in 2 engineering courses were failures from the perspective of the authors' design goals but provided important lessons for the researchers. The 1st trials with CaMILE helped the ...
International Journal of Human-computer Studies / International Journal of Man-machine Studies, 2000
A variety of information visualization tools have been developed recently, but relatively little ... more A variety of information visualization tools have been developed recently, but relatively little e!ort has been made to evaluate the e!ectiveness and utility of the tools. This article describes results from two empirical studies of two visualization tools for depicting hierarchies, in particular, computer "le and directory structures. The two tools examined implement space-"lling methodologies, one rectangular, the Treemap method, and one circular, the Sunburst method. Participants performed typical "le/directory search and analysis tasks using the two tools. In general, performance trends favored the Sunburst tool with respect to correct task performance, particularly on initial use. Performance with Treemap tended to improve over time and use, suggesting a greater learning cost that was partially recouped over time. Each tool a!orded somewhat di!erent search strategies, which also appeared to in#uence performance. Finally, participants strongly preferred the Sunburst tool, citing better ability to convey structure and hierarchy.
The wide accessibility of the World Wide Web makes it a perfect base for developing computer scie... more The wide accessibility of the World Wide Web makes it a perfect base for developing computer science courseware modules.
... For example, the system of indexes in ARCHIE, which helped architectural students design libr... more ... For example, the system of indexes in ARCHIE, which helped architectural students design libraries, helped students develop an understanding of the issues that need to be addressed in designing libraries, the kinds of spaces libraries have, and the perspectives different kinds ...
Collaborative Support for Learning in Complex Domains Mark Guzdial1, Jennifer Turns2, Noel Rappin... more Collaborative Support for Learning in Complex Domains Mark Guzdial1, Jennifer Turns2, Noel Rappin1, and David Carlson1 1 College of Computing, Georgia Institute of Technology 2 School of Industrial and Systems Engineering, Georgia Institute of Technology Abstract ...
... Discussion forums that embody these features are examples of computer-mediated anchored discu... more ... Discussion forums that embody these features are examples of computer-mediated anchored discussion forums. ... Discussion threading and note persistence are two discussion managementfeatures that computer-mediated discussion forums can provide. ...
Abstract 1. Reports on the evolution of the Collaborative and Multimedia Interactive Learning Env... more Abstract 1. Reports on the evolution of the Collaborative and Multimedia Interactive Learning Environment (CaMILE) and the strategies that were developed to get students to engage in domain-relevant discussions. CaMILE is an on-line forum for collaboration and reflection. Four attempts to use CaMILE are described. The 1st 2 attempts to use CaMILE in 2 engineering courses were failures from the perspective of the authors' design goals but provided important lessons for the researchers. The 1st trials with CaMILE helped the ...
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Papers by Mark Guzdial