The second component plausibility factor, PL 2 , is defined as the maximum plausibility of alignment involving the translation equivalent, where the plausibility of alignment of a first-language word association with a second-language word association is defined as the mutual information of the second-language word association multiplied by the sum of correlations between the translation equivalent and the translingually alignable accompanying associated words.
x This is based on the assumption that correct alignment of word associations is usually accompanied by many associated words that are alignable with each other as well as the assumption that alignment with a strong word association is preferable to alignment with a weak word association.