Concurrent Lexicalized Dependency Parsing: The ParseTalk Model
  A grammar model for concurrent, object-oriented natural language parsing is introduced. Complete lexical distribution of grammatical knowledge is achieved building upon the head-oriented notions of valency and dependency, while inheritance mechanisms are used to capture lexical generalizations. The underlying concurrent computation model relies upon the actor paradigm. We consider message passing protocols for establishing dependency relations and ambiguity handling. 
Norbert Broeker, Udo Hahn, Susanne Schacht (Computational Linguisitcs   Research Group, Freiburg University, Germany)