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12 Cards in this Set
- Front
- Back
WHY use Decision Support Systems?
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Decision Making EFFECTIVENESS, power, flexibility
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What is DSS?
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A man-machine information system that supports end users in decision making for application-specific semi-or unstructured problems by providing ad hoc inquiry and what-if analysis capabilities to improve decision-making effectiveness
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Types of Decisions
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Structured: repetitive, routine, and involving a definite procedure
Semistructured: Unstructured: Novel, nonroutine, no well-understood procedure |
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Model of decision maker process
Intelligence stage |
data collection/processing and problem identification, requirement analysis
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Design stage
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Alternative solutions , evaluation criteria
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Choice stage
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What if or sensitivity analysis, simulation, choose the best solution
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Nature of Decision variables
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Factors to be considered in a DM (Decision Model) are very subjective
Strongly influenced by your personal values Factor selection is also strongly effected by our experience |
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rational Model
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clear objectives and payoff, utility, criteria or preference functions for ranking alternative solutions
complete knowledge of all alternatives and their solutions |
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Bounded rationality
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decision makers search for alternatives that are not radically different from the current course of action
-have many might be conflicting goals |
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Satisficing
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Acceptance of viable choices that may not be the undiscoverable optimal solutions
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Characteristics of satisficing
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Generally, only one goal is considered at one time
-management solves problems based on one objective in a satisfactory way and then moves on to the next problem, goal, or opportunity |
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Incremental Model
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Management selects the policies which appears only marginally different from the current mode of operation-+
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