Feature Instability as a Criterion for Selecting Potential Style Markers
Moshe Koppel, Navot Akiva and Ido Dagan
Journal of the American Society for Information Science and Technology (JASIST)
We introduce a new measure on linguistic features, called stability, which captures the extent to which a language element, such as a word or a syntactic construct, is replaceable by semantically equivalent elements. This measure may be perceived as quantifying the degree of available “synonymy” for a language item. We show that frequent but unstable features are especially useful as discriminators of an author’s writing style.