Borderline vs. unknown: comparing three-valued representations of imperfect information
We explore the connections between several representations of imperfect information. In each case we compare the expressive power of these formalisms. In each case we study how to express aggregation operations. We demonstrate the formal similarities among these approaches. We point out the differences in interpretations between these approaches.
kleene logic partial models orthopairs vagueness incomplete information belnap logic supervaluations