Feature Unification in TAG Derivation Trees

The derivation trees of a tree adjoining grammar provide a first insight into the sentence semantics, and are thus prime targets for generation systems. We define a formalism, feature-based regular tree grammars, and a translation from feature based tree adjoining grammars into this new formalism. The translation preserves the derivation structures of the original grammar, and accounts for feature unification.

• Type: Journal
• Year: 2008
• Where: CORR
• Authors: Sylvain Schmitz, Joseph Le Roux
• Keywords: CORR 2008, Derivation Trees, Education, Feature-based Regular Tree, Grammar