criterion 1

Suppose two criteria sentences A and B. And \(A_x = \{x_A^1, x_A^2,...,x_A^n\}, B_x = \{x_B^1,x_B^2,...,x_B^n\}\) are sets resulted from two sentences A and B, respectively.


Then similarity between A and B can be obtained by \(s(A,B) = \frac{n(A_x \cap B_x)}{n(A_x \cup B_x)} \)