Figure 3.

Illustration for orthographic similarity. (A) Words are placed at the same index to compare their letters. For calculating the maximum value, each letter in the shorter word is compared with the longest in every index. The quotient is 1/k, where k denotes the overlapped number of words index. The maximum quotients in each letter of the shorter word are summarized and divided by the longer word’s length. (B) The shorter word is shifted by one index; repeat the calculation of the maximum value. (C) Finding the maximum from the values obtained from every lag.