Review Summary: Path enumeration model stores a path from the root to every node in the tree by concatenating them in the path. The proposed pattern describes the way of translating classification scheme into taxonomy using path enumeration model. This pattern is explained nicely and simple enough to be widely used and accepted for a specific purpose.
Problems: The main problem of this pattern can be seen in its reusability. As for each classification scheme that is going to be translated into taxonomy, the path enumeration brings unique concatenations between the tree' nodes. Therefore, the proposed pattern must be uniquely organized according to the specific classification scheme. To my understanding of the problem, changing classification scheme brings new results of the applied path enumeration method. Otherwise, in case of translating wide-known classification cheme into taxonomy, such a pattern can be recommended to be used/reused.
'Ontology Design Patterns'