About Visual modeling : Visual modeling is the graphic representation of objects and systems of interest using graphical languages. Visual modeling languages may be General-Purpose Modeling (GPM) languages (e.g., UML, Southbeach Notation, IDEF) orDomain-Specific Modeling (DSM) languages (e.g., SysML).
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Visual modeling include industry open standards (e.g., UML, SysML,Modelica), as well as proprietary standards, such as the visual languages associated with VisSim, MATLAB and Simulink,OPNET, NetSim, NI Multisim, and Reactive Blocks. Both VisSim and Reactive Blocks provide a royalty-free, downloadable viewer that lets anyone open and interactively simulate their models. The community edition of Reactive Blocks also allows full editing of the models as well as compilation, as long as the work is published under the Eclipse Public License. Visual modeling languages are an area of active research that continues to evolve, as evidenced by increasing interest in DSM languages, visual requirements, and visual OWL (Web Ontology Language).
Visual models can also be used to reduce complexity. Different models can be used to capture different aspects of a problem domain. Sometimes the specific type of model chosen is driven by the problem domain itself. By creating different views of a problem domain, analysts can choose to only display the most relevant information and hide other complexities. This facilitates comprehension of the most important aspects of the information being modeled.