INTERNATIONAL JOURNAL OF UNCERTAINTY FUZZINESS AND KNOWLEDGE-BASED SYSTEMS, cilt.17, sa.1, ss.137-146, 2009 (SCI-Expanded)
In this paper the concept of similarity based vague positive class is introduced. It is shown that under some conditions there exists a one to one correspondence between the vague positive class and the linear fuzzy strict ordering as in the classical theory. Finally a purely similarity-based construction of the vague positive class is proposed.