Use of Grey Numbers and Soft Sets as Assessment Tools
Michael Gr. Voskoglou *
Department of Mathematical Sciences, Graduate Technological Educational Institute of Western Greece, Patras, Greece.
*Author to whom correspondence should be addressed.
Abstract
The traditional assessment methods are not suitable for use when assessment is performed under vague conditions, e.g. by using linguistic grades or expressions. Among a series of methods for assessment under fuzzy conditions, developed by the present author in earlier works, the most suitable for use seems to be the method utilizing grey numbers as tools. Recently, however, we also developed a method using soft sets for assessment in a parametric manner. These two methods are compared in this paper, listing their differences, advantages and disadvantages.
Keywords: Dermatoglyphics, Fuzzy set (FS), Finger prints and Leukaemia, soft set, grey number (GN), fuzzy assessment methods, case-based reasoning (CBR)