On the Semantic Web, decision makers (humans or software agents alike) are faced with the challenge of examining large volumes of information originating from heterogeneous sources with the goal of ascertaining trust in various pieces of information. While previous work has focused on simple models for review and rating systems, we introduce a new trust model for rich, complex and uncertain inf...

Spatial information associates properties to labeled areas. Space is partitioned into (elementary) parcels, and union of parcels constitute areas. Properties may have various level of generality, giving birth to a taxonomy of properties for a given universe of discourse. Thus, the set of properties pertaining to a conceptual taxonomy, as the set of areas and parcels, are structured by a natural...

Abstract More uncertainty can be obtained when real numbers are extended to intervals. The two new concepts proposed in this work the natural extensions of cognitive interval information and uncertain with numbered values replaced by values. Hence, type some characteristics, structures, degree functions score them analyzed. Two special usages types group decision making show that they have much...