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<p>An overview is given of Q+, an interactive tool for performance modeling that uses graphical input and visual output. Two major enhancements are a subnetwork capability for structuring models hierarchically and an integrated expression capability. New capabilities are custom icons and temporal browsing. With a Q+ icon palette, users can draw their own icons and manipulate existing ones. The browser allows browsing, editing and updating Q+ information, which can be textual or graphical. Automatic model building, operations management, and experimental design with Q+ are discussed.</p>
interactive visual modelling; automatic model building; Q+; interactive tool; performance modeling; graphical input; visual output; subnetwork; integrated expression; custom icons; temporal browsing; icon palette; editing; updating; operations management; experimental design; computer graphics; interactive systems; performance evaluation; program testing; software tools
Larry D. Rubin, Tasos D. Kontogiorgos, Cynthia A. Funka-Lea, Robert J.T. Morris, "Interactive Visual Modeling for Performance", IEEE Software, vol. 8, no. , pp. 58-68, September/October 1991, doi:10.1109/52.84217
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