Concise Integer Linear Programming Formulations for Dependency Parsing

  title={Concise Integer Linear Programming Formulations for Dependency Parsing},
  author={Andr{\'e} F. T. Martins and Noah A. Smith and Eric P. Xing},
We formulate the problem of nonprojective dependency parsing as a polynomial-sized integer linear program. Our formulation is able to handle non-local output features in an efficient manner; not only is it compatible with prior knowledge encoded as hard constraints, it can also learn soft constraints from data. In particular, our model is able to learn correlations among neighboring arcs (siblings and grandparents), word valency, and tendencies toward nearlyprojective parses. The model… CONTINUE READING
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