On degrees of truth, partial ignorance and contradiction

Didier Dubois (1)

1 IRIT-ADRIA - Argumentation, Décision, Raisonnement, Incertitude et Apprentissage

In many works dealing with knowledge representation, there is a temptation to extend the truth-set with values expressing ignorance and contradiction. This is the case with partial logic and Belnap bilattice logic. This is also true in interval-valued extensions of fuzzy sets. This paper shows that ignorance and contradiction cannot be viewed as additional truth-values nor processed in a truthfunctional manner.

Domaines: Intelligence artificielle [cs.AI]

Didier Dubois. On degrees of truth, partial ignorance and contradiction. 12th International Conference on Information Processing and Management of Uncertainty in Knowledge-based Systems (IPMU 2008), Jun 2008, Málaga, Spain. pp.31-38. ⟨hal-03442450⟩