Difference between DSS and Expert System
1. Decision Support System (DSS) :
It’s a computer based system that aids the process of decision making. It is an interactive, flexible and adaptable computer system. It is especially developed for supporting the solution of a non-structured management problem for improved decision making.
DSS are a specific class of computerized information system that supports business and organizational decision-making activities.
- It saves time.
- Enhances efficiency
- Reduces the cost
- It improves personal efficiency
- It increases the decision maker satisfaction.
- Information Overload
- Status reduction
- Over-emphasize decision making.
2. Expert System :
It is a computer program that is designed to mimic the decision-making ability of a decision-maker.
It organizes a set of knowledge about a particular subject. It contains facts and judgmental knowledge which gives it the ability to guess like a human. There are set of rules on which it make decisions using if-else structure. The inference engine does reasoning by manipulating the knowledge base. The user interface represents questions and information to the operator and also receives answers from the operator.
- Cost is reduced
- Danger is reduced
- Increases the availability
- It can make absurd errors if data is entered incorrectly.
- Doesn’t provide creative response in certain situations.
- It relies on rules and knowledge being correct.
Difference between DSS and Expert System :
|It facilitates decision-making.||It automates decision-making.|
|The decision environment is unstructured.||The decision environment have structure.|
|It extracts or gains knowledge from a computer system.||Inject expert knowledge in to a computer system.|
|Characteristics of the problem domain is complex and broad.||In this, it is limited and specialised.|
|Type of data manipulation is numeric.||Type of data manipulation is symbolic.|
|It has limited capacity.||It has a full capacity.|
|It uses goals and system data to establish alternatives and outcomes, so a good decision can be made.||The expert system can eventually replace the human decision maker.|
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