I am interested in finding out a good measure of similarity to determine if two sets are significantly similar to each other. I know there are many different similarity coefficients, like Jaccard Index, Dice Coefficient, Cosine Similarity, Simple Matching, etc. My problem is how to interpret these values. What is a "good" value for a similarity coefficient and what is a "bad" value. I see references to upper and lower bounds for the coefficients indicating complete similarity and complete difference, respectively, but I cannot find tables of these values for the coefficients. Does anyone know if these exist or how exactly to interpret a similarity coefficient to determine if two sets (with a non-empty intersection) are similar?