Dependency Trees

A dependency tree is a graphical representation of a sentence parsed using a dependency grammar. The nodes in the tree correspond to words in the sentence being parsed (and sometimes to special synthesized nodes). The arcs correspond to dependency relations between a "head" word, at the upper end of an arc, and the dependent words at the lower ends of the arcs connected to the head word. The grammatical relations between head and dependent words are such things as subject, object, modifier, etc.