On a similarity ratio

The mathematical study of fuzzy equivalences or T indistinguishabilities has led to the publication of a good many papers see etc It is wor thy of note that within Theoretical Fuzzy Logic the mathematical analysis of T indistinguishabilities is a eld that is important in itself and of undeniable in terest for fuzzy logic applications such as control the ory for instance see etc Furthermore there are papers in which given indices are used to measure similarity and where fuzzy logic concepts that could possibly reinforce the theoretical framework of the pro posed methodology are not taken into account This is the case of an interesting paper in which what is referred to as the ratio of similarity between two concepts A and B with respective numerical signa tures a an and b bn that can be easily considered as belonging to n related to an n tuple P fp png of relevant properties of the domain in question plays a decisive role In the above paper the ratio of similarity is taken to be the number

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