5) Wu and Palmer Measure
Wu and Palmer (1994) [12], present a measure of similarity for general English that relies on finding the most general concept that subsumes both of the concepts being measured. The path length from this shared concept to the root of the ontology is scaled by the sum of the distances of the concepts to the subsuming concept. Wu and Palmer similarity measure calculate the most specific common ancestor of the two Concepts, with minimum number of is-a Link in the path of the common subsume.
T = 21 TT
= {W1, W2… ,Wn}
The joint word set T contains all the distinct words from T1 and T2. Since inflectional morphology may cause a word to appear in a sentence with different forms that convey a specific meaning for a specific context, we use word form as it appears in the sentence. For example, boy and boys, woman and women are considered as four distinct words and all included in the joint word set. Thus, the joint word set for two sentences.