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The knowledge base of an expert system that uses
questionnaires to lead the user through a series of choices
before a conclusion is reached is known as:
A. rules.
B. decision trees.
C. semantic nets.
D. data flow diagrams.
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Answer: B
Decision trees use questionnaires to lead a user through a
series of choices until a conclusion is reached. Rules refer
to the expression of declarative knowledge through the use
of if-then relationships. Semantic nets consist of a graph
in which nodes represent physical or conceptual objects and
the arcs describe the relationship between the nodes.
Semantic nets resemble a data flow diagram and make use of
an inheritance mechanism to prevent duplication of data.
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