Decision support system

Decision support system

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  Decision Support Systems
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  Objectives • What isDecision Support System (DSS)? • Decision Structure • Decision Support System Characteristics • Components of DSS • Classification of DSS • Benefits of DSS
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  An interactive, flexible computerizedinformation system that enables managers to obtain and manipulate information as they are making decisions. What is Decision Support System?
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  • DSS isan interactive software-based system intended to help decision makers compile useful information from raw data, documents, personal knowledge, and/or business models to identify and solve problems and make decisions. What is Decision Support System?
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  Information required atdifferent management levels
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  Levels of Managementin Decision Making Strategic management Executives develop organizational goals, strategies, policies, and objectives As part of a strategic planning process Tactical management Managers and business professionals in self- directed teams Develop short- and medium-range plans, schedules and budgets Specify the policies, procedures and business objectives for their subunits
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  Levels of Managementin Decision Making • Operational management – Managers or members of self-directed teams – Develop short-range plans such as weekly production schedules
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  Decision Structure • StructuredDecisions – situations where the procedures to follow when a decision is needed can be specified in advance • Unstructured Decisions – decision situations where it is not possible to specify in advance most of the decision procedures to follow • Semi structured Decisions - decision procedures that can be prespecified, but not enough to lead to a definite recommended decision
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  DSS System Characteristics CharacteristicsCharacteristics ofaof a DSS SystemDSS System CharacteristicsCharacteristics of aof a DSS SystemDSS System InteractiveInteractiveInteractiveInteractive FlexibleFlexibleFlexibleFlexible Discovery-OrientedDiscovery-OrientedDiscovery-OrientedDiscovery-Oriented AccessibleAccessibleAccessibleAccessible
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  COMPONENTS OF DSS TPS EXTERNAL DATA DSSDATA BASE DSS SOFTWARE SYSTEM MODELS OLAP TOOLS DATAMINING TOOLS USER INTERFACE USER
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  Classification of DSS •Model-driven DSS • Communication-driven DSS • Data-driven DSS • Document-driven DSS • Knowledge-driven DSS
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  Model-driven DSS • Amodel-driven DSS emphasizes access to and manipulation of a statistical, financial, optimization, or simulation model. • Model-driven DSS use data and parameters provided by users to assist decision makers in analyzing a situation; they are not necessarily data-intensive.
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  Communication-driven DSS • Acommunication-driven DSS supports more than one person working on a shared task
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  Data-driven DSS • Adata-driven DSS or data-oriented DSS emphasizes access to and manipulation of a time series of internal company data and, sometimes, external data
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  Document-driven DSS • Adocument-driven DSS manages, retrieves, and manipulates unstructured information in a variety of electronic formats.
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  Knowledge-driven DSS • Aknowledge-driven DSS provides specialized problem-solving expertise stored as facts, rules, procedures, or in similar structures
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  Benefits of DSS Improvespersonal efficiency Accelerate problem solving Facilitates interpersonal communication Promotes learning or training Increases organizational control Generates new evidence in support of a decision Creates a competitive advantage over competition Reveals new approaches to thinking about the problem space