Extracts dependency relations from parsed syntactic structures.

Converts phrase structure parses (NP, VP, PP, etc.) into Universal Dependencies relations, creating a dependency graph that captures grammatical relationships.

Approach

• Extract dependencies from clause structures (subject, predicate)
• Extract dependencies within phrases (determiners, modifiers)
• Handle coordination and subordination
• Handle relative clauses

Example

iex> sentence = parse("The cat sat on the mat")
iex> deps = DependencyExtractor.extract(sentence)
[
  %Dependency{relation: :det, head: cat, dependent: the},
  %Dependency{relation: :nsubj, head: sat, dependent: cat},
  %Dependency{relation: :case, head: mat, dependent: on},
  %Dependency{relation: :det, head: mat, dependent: the},
  %Dependency{relation: :obl, head: sat, dependent: mat}
]