If a candidate synset represents a correct sense of Persian word, we expect the occurrence of this sense in a Persian corpus which contains that word.
for each Persian word w and each PWN synset t, ߠ ௪,௧ is considered as probability of selecting PWN synset t for Persian word w. : In order to estimate these parameters we can divide the number of times that a Persian word w occurs with PWN synset t in a Persian tagged corpus to the number of times that a Persian word w appears in that Persian tagged corpus.