r p and other coefficients of pattern similarity

A pattern consists of fundaments and relations. Its similarity to other patterns can be expressed either in terms of relations alone—in which case a modified correlation coefficient,r _s , suffices—or in terms of fundaments and relations, where new coefficients,r _p andr' _p are required. The derivation of acoefficient of pattern similarity, r _p , is presented and its properties are investigated, both deductively and in terms of actual data on culture patterns.