 It is the rule, rather than the numeric value or the algebraic expression that needs to be substituted in the item to reach a solution.The Ratio and Algebra attribute hierarchy can also be expressed in matrix form.To begin, the direct relationship among the attributes is specified by a binary adjacency matrix (A) of order "(k,k)", where "k" is the number of attributes, such that each element in the A matrix represents the absence (i.e., 0) or presence (i.e., 1) of a direct connection between two attributes.