The #Likelihood and #Cosine similarity methods calculate the similarity between two terms by always using values between 0 and +1: when the value is 0 the two are completely different, while when it is 1 the words are identical; and a value around 0,8 indicates a high degree of similarity.
the #Likelihood method (329 occurrences) measures the associative strength of terms thus enhancing the exclusive links with other terms, while the #Cosine similarity method (934 occurrences) analyses the similarity on the basis of the occurrences they have in common.