Decision Rules, also called Production Rules or If-then Rules are a basic structure in data mining and expert systems. This method of knowledge representation is simple and easy to use for data analysis. Each Rule defines a piece of overall knowledge. The Rules can be edited, removed or added independently from each other.
The Rule cosists of condition and conclusion. In case if there are many conditions, they are separated by "and". For example:
IF condition1 and condition2 THEN conclusion
As a conclusion, Estard Data Miner represents so-called Classes - values, obtained from database or created manually by the user. During the Query, the progtam reveals all Rules for Classes, structurizes them and outputs in a special control.
For convenient viewing the Decision Rules, in the Rules control the conclusion (Class) is placed before the Rule:
Note: Each Rule is marked with a unique number, that is not a part of a Rule.
After creating Rules, a rule-based system, containing global rules and facts,
can be used for improving the decision making process.