COSINE SIMILARITY MEASURE FOR ROUGH INTUITIONISTIC FUZZY SETS AND ITS APPLICATION IN MEDICAL DIAGNOSIS

Similarity measure is an important mathematical tool used in medical diagnosis, pattern recognition etc. In this paper a cosine similarity for rough intuitionistic fuzzy set is proposed. Also we apply the notion of weighted rough intuitionistic fuzzy approach to cosine similarity measure for further investigation. Finally a medical diagnosis problem is defined to verify the proposed similarity measure. AMS Subject Classification: 03E72, 04A72, 28E10, 26E50, 94D05

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