Unication and Default Unication
Gosse Bouma · 2004
Unication of (typed) feature structures is an important tool for capturing linguistic generalizations. It is the core of a family of linguistic formalisms, it has been applied in phonology, morphology, syntax, and semantics, and is dominant in most linguistically informed work in natural language processing. Unication monotonically merges information. Default unication provides a non-monotonic counterpart of this operation, which can be used to streamline the denition of grammars and lexica, as it supports concise encodings of generalizations as well as exceptions to generalizations.