The key points from this module are:
A decision support system is basically a man-computer interactive system that aids in making a decision. This helps the managers to make decisions.
The different types of managerial problems are:
Structured decision problem
Unstructured decision problem
Desirable features of models in DSS are:
Models must be easy to communicate with
The manager should be able to give inputs easily.
The control parameters should be expressed in terms with which the user is familiar.
Good dialogue is needed to facilitate the building and the operation of the model by the user
Such dialogue provides a mechanism to support interactive modelling by which users build, analyse and test models.
Components of a DSS
In operation Control
There are five different theories of decision making, they are:
The rational manager view - The decision-maker os rational, completely informed and makes an optimal decision.
The satisficing view- Making use of limited knowledge and contents with good solutions.
The organisational procedures view- The outputs from this decision is of certain standard procedures invoked by organisational units.
The political view- The outcomes of a decision are influenced by the individuals involved.
The individual differences perspective- The decision-making system is designed with a specific user in mind.
Models- Anything that is used to represent something else is called a model.
Database management systems, take care of creation, retrieval, storage,
modification, security as well as the storage structure of the computerised databases along with authorization checks and validation procedures.
There are three phases in the design cycle of a decision support system.
Post design phase
Models they have the ability to generate and compare various alternative solutions
A DSS model is made up of :
Equations, constraints, initial values, final values, operational rules
In a DSS system, we have different classification of models, we have :
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