Decision Support System(DSS)

Decision Support System(DSS)

1. A DSS sifts through and analyzes massive amounts of data, compiling comprehensive information that can be used to solve problems and in decision-making.

2. A DSS is typically built to support the solution of a certain problem or to evaluate an opportunity.

3. DSS Classification

   • Communications-Driven and Group DSS Communications-driven and group DSS (GSS) include DSS that use computer, collaboration, and communication technologies to support groups in tasks that may or may not include decision making.
   • Data-Driven DSS Data-driven DSS are primarily involved with data and processing them into information and presenting the information to a decision maker.
   • Document-Driven DSS Document-driven DSS rely on knowledge coding, analysis, search, and retrieval for decision support.
   • Knowledge-Driven DSS, Data Mining, and Management Expert Systems Applications These DSS involve the application of knowledge technologies to address specific decision support needs.
   • Model-Driven DSS The major emphases of DSS that are primarily developed around one or more (large-scale/complex) optimization or simulation models typically include significant activities in model formulation, model maintenance, model management in distributed computing environments, and what-if analyses.
   • Compound DSS A compound, or hybrid, DSS includes two or more of the major categories described earlier. Often, an ES can benefit by utilizing some optimization, and clearly a data-driven DSS can feed a large-scale optimization model.
   • + Other DSS Categories

4. The Data Management Subsystem

   • •DSS database • Database management system • Data directory • Query facility

5. The Model Management Subsystem

   • • Model base • MBMS • Modeling language • Model directory • Model execution, integration, and command processor

6. The User Interface Subsystem

   • The user communicates with and commands the DSS through the user interface sub- system. The user is considered part of the system.

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