DecisionTable-class: Class '"DecisionTable"'

Description Objects from the Class Slots Methods Note Author(s) References See Also Examples

Description

A decision table is a set of rules with the same number of conditions and only one decision.

Objects from the Class

Objects can be created by calls of the form new("DecisionTable", decisionTable). A decisionTable is a numeric matrix where each row is a ruleThe matrix last column is the decision of the rules and the remaining columns are rule conditions.

Slots

decisionTable:

Object of class "matrix"

Methods

checkConsistency

signature(object = "DecisionTable"): ...

computeConsistencyMatrix

signature(object = "DecisionTable"): ...

computeDiscernibilityMatrix

signature(object = "DecisionTable"): ...

findAllReductsFromCore

signature(object = "DecisionTable"): ...

findFirstConditionReduct

signature(object = "DecisionTable"): ...

findSmallestReductFamilyFromCore

signature(object = "DecisionTable"): ...

getCondition

signature(object = "DecisionTable"): ...

getDecision

signature(object = "DecisionTable"): ...

getDecisionTable

signature(object = "DecisionTable"): ...

getRule

signature(object = "DecisionTable"): ...

initialize

signature(.Object = "DecisionTable"): ...

print

signature(x = "DecisionTable"): ...

removeDuplicatedRulesDT

signature(object = "DecisionTable"): ...

show

signature(object = "DecisionTable"): ...

simplifyDecisionTable

signature(object = "DecisionTable"): ...

Note

This is not a complete implementation of Rough Set theory; instead it is just the application of the theory to decision table simplification also known as knowledge reduction.

Author(s)

Alber Sanchez

References

Pawlak, Zdzislaw 1991 Rough Sets: Theoretical Aspects of Reasoning About Data Dordrecht: Kluwer Academic Publishing.

See Also

DiscernibilityMatrix ConditionReduct ValueReduct

Examples

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exampleMatrix1 <- matrix(c(1,0,2,1,1,2,2,0,0,1,0,1,0,2,1,
1,2,1,0,0,2,0,1,1,2,1,1,2,0,1,1,0,0,2,1,2,1,1,2,1),ncol = 5)
dt <- decisionTable(exampleMatrix1)

Example output



RoughSetKnowledgeReduction documentation built on May 30, 2017, 8:13 a.m.