Plurality of beliefs and theories in different knowledge domains calls for modelling multi-viewpoint ontologies and knowledge organization systems. A generic theoretical approach recently proposed for heterogeneity representation in KOS was linking each ontological statement to a specific validity scope to determine a set of conditions under which the statement is valid. However, the practical applicability of this approach has yet to be empirically assessed. In addition, there is still a need to investigate the types of inconsistencies that might arise in (...) multi-viewpoint ontologies as well as their possible causes. This study proposes a new framework for systematic analysis and classification of inconsistencies in multi-viewpoint ontologies. The framework is based on eight generic logical structures of ontological statements. To test the validity of the proposed framework, two ontologies from different knowledge domains were examined. We found that only three of the eight structures led to inconsistencies in both ontologies, while the other two structures were always present in logically consistent statements. The study has practical implications for building diversified and personalized knowledge systems. (shrink)

Anecdotal reports obtained from three individuals with prosopagnosia, all of whom have participated in an investigation, capture the essence of their impairment. This article focuses on the contrast between two prominent forms of prosopagnosia, one of which results from an acquired brain insult in an otherwise premorbidly normal individual and a second which appears to be lifelong and occurs in the absence of any obvious brain damage, at least as evident on conventional brain imaging. It reviews two central issues: the (...) first concerns the similarities and differences in the psychological representations of faces in acquired prosopagnosia and congenital prosopagnosia, and the second concerns the nature of the underlying neural representations of faces in these two populations. Some well-established overlapping behavioral characteristics are identified. (shrink)