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Sigma KEE - ProbabilityRelation
KB Term: 
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ProbabilityRelation
The Class of Relations that permit assessment of the probability of an event or situation.
Relationships      
Parents InheritableRelation The class of Relations whose properties can be inherited downward in the class hierarchy via the subrelation Predicate.
  Relation The Class of relations. There are two kinds of Relation: Predicate and Function. Predicates and Functions both denote sets of ordered n-tuples. The difference between these two Classes is that Predicates cover formula-forming operators, while Functions cover term-forming operators.
InstancesconditionalProbabilityOne of the basic ProbabilityRelations. conditionalProbability is used to state the numeric value of a conditional probability. (conditionalProbability ?FORMULA1 ?FORMULA2 ?NUMBER) means that the probability of ?FORMULA2 being true given that ?FORMULA1 is true is ?NUMBER.
 decreasesLikelihoodOne of the basic ProbabilityRelations. (decreasesLikelihood ?FORMULA1 ?FORMULA2) means that ?FORMULA2 is less likely to be true if ?FORMULA1 is true.
 increasesLikelihoodOne of the basic ProbabilityRelations. (increasesLikelihood ?FORMULA1 ?FORMULA2) means that ?FORMULA2 is more likely to be true if ?FORMULA1 is true.
 independentProbabilityOne of the basic ProbabilityRelations. (independentProbability ?FORMULA1 ?FORMULA2) means that the probabilities of ?FORMULA1 and ?FORMULA2 being true are independent.
 ProbabilityFnOne of the basic ProbabilityRelations, ProbabilityFn is used to state the a priori probability of a state of affairs. (ProbabilityFn ?FORMULA) denotes the a priori probability of ?FORMULA.


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