Decision Support Systems Flashcards
What is Data management
it is used to collect and organise the data
What is model management
it involves the use of a model to turn data into information.
What is dialogue management
It allows the user to enter a request in a convenient manner. It provides the interactivity of DSSs.
what is a Geographic information system (GIS for short)
it is an information system that is capable of assembling, storing, manipulating and displaying geographically referenced information.
What is “What-if”
it is the process of making changes to the data and observing their effects.
what are Expert systems
they are systems that provide information and solve problems that would otherwise require a person experience in that field to do.
what are the components of an expert system
The knowledge base and the inference engine
What is a knowledge base
The knowledge base is a set of general facts and if-then rules supplied by an expert.
what is a nerual network
it is an information system that works like the human brain and is capable of learning.
what are Expert system shells
they are ready-made expert systems except that they contain no knowledge.
what is the database of facts
is the data that relates to the specific situation being anaysed.
what is the difference between a database of facts and a knowledge base
a knowledge base contains data that are more general where as a database of facts would contain data from a specific problem.
what is an inference engine
The inference engine is the part of the expert system that carries out the reasoning. It is essentially a rule interpreter whose function is to use the if-then rules of a knowledge base to solve the problem set by the user.
what is the explanation mechanisim
it is a method of checking how the expert system inferred its deduction.
what are the two main types of inference engines
Forward chaining and backward chaining