Semantic similarity was an important feature in MorphoChains:<cite> Narasimhan et al. (2015)</cite> concluded that up to 25 percent of their model's precision was due to the semantic similarity feature. We use the same feature here (COS). To identify possible affixes to use as features,<cite> Narasimhan et al. (2015)</cite> counted the number of words that end (or start) with each substring Table 3 : Examples illustrating which of the binary features in the model are active for various potential child-parent pairs.