Transcript Decision Support Systems

Decision Support Systems
Option Topic #2
HSC IPT
Topic Outline
Characteristics
Examples
Organising in decision support
Processing in decision support
Analysing in decision support
Other information processes
Issues related to decision support
Characteristics
A decision support system is an information
system designed to assist in decision
making.
The functions a DSS may perform include
Handle large amounts of data from different sources.
Provide report and presentation flexibility.
Support drill-down analysis.
Use advanced SW packages to perform complex
operations.
Support optimisation, satisficing and heuristic
approaches.
Perform ‘what-if’ simulation and goal seeking
analysis.
The functions a DSS may perform include –
Handle large amounts of data from different sources.
Provide report and presentation flexibility.
Support drill-down analysis.
Use advanced SW packages to perform complex
operations.
Support optimisation, satisficing and heuristic
approaches.
Perform ‘what-if’ simulation and goal seeking
analysis.
Decision making
The 3 elements of decision making are -
Intelligence
Design
Choice
Types of problems -
Structured
Semi-structured
Unstructured
Examples
Types of decision support systems –
Spreadsheets
Databases
Expert systems
Artificial neural networks
Organising in decision support
Steps in designing a spreadsheet solution –
Analysis
Design the solution
Implement the solution
Refinement and maintenance
Processing in decision support
Artificial intelligence (AI)
Expert systems
Expert system shells
Automation of spreadsheets using
macros
Analysing in decision support
Data warehousing
Data marts
Data mining
Data matching
Extracting data
Other information processes
Collecting, storing and retrieving data
The role of the expert and the knowledge
engineer in the creation of expert systems
Use of intelligent systems to search data
Issues related to decision support
Reasons for using intelligent systems in decision
support
Responsibilities of those performing data mining
Group decision support systems
Responsibility
References
Chivers, B. et. Al. (2001). Information
Processes & Technology – HSC
Course. Australia: Jacaranda.
Johnstone, G. et. Al. (2000). Information
Processes & Technology – Excel HSC.
Australia: Excel.