25-09-2013, 03:24 PM
Decision Support Systems: An Overview
Support Systems.pptx (Size: 95.27 KB / Downloads: 25)
DSS Definition
A DSS is a computer based problem solving system that assists choice between alternatives in complex and controversial domains.
DSS Configurations
Supports individuals and teams
Used repeatedly and constantly
Two major components: data and models
Web-based
Uses subjective, personal, and objective data
Has a simulation model
Used in public and private sectors
Has what-if capabilities
Uses quantitative and qualitative models
Working Definition of DSS
A DSS is an interactive, flexible, and adaptable CBIS, specially developed for supporting the solution of a non-structured management problem for improved decision making. It utilizes data, it provides easy user interface, and it allows for the decision maker’s own insights
DSS may utilize models, is built by an interactive process (frequently by end-users), supports all the phases of the decision making, and may include a knowledge component
Characteristics and Capabilities of DSS
1. Provide support in semi-structured and unstructured situations, includes human judgment and computerized information
2. Support for various managerial levels
3. Support to individuals and groups
4. Support to interdependent and/or sequential decisions
5. Support all phases of the decision-making process
6. Support a variety of decision-making processes and styles
(more)
DSS Components
1. Data Management Subsystem
2. Model Management Subsystem
3. Knowledge-based (Management) Subsystem
4. User Interface Subsystem
5. The User
DSS Classifications
Alter’s Output Classification (1980)
Degree of action implication of system outputs (supporting decision)
Holsapple and Whinston’s Classification
1. Text-oriented DSS
2. Database-oriented DSS
3. Spreadsheet-oriented DSS
4. Solver-oriented DSS
5. Rule-oriented DSS
6. Compound DSS
Ingredients for DSS
Success or Failure
For DSS Success
Management Support
Users Involved in Design & Development
Early Benefits Shown
For DSS Failure
Lack of Management Support
Users Ignored in Design & Development
No Early Benefits Shown