An Earley parsing algorithm for range concatenation grammars

Laura Kallmeyer, Wolfgang Maier, Yannick Parmentier
2009 Proceedings of the ACL-IJCNLP 2009 Conference Short Papers on - ACL-IJCNLP '09   unpublished
We present a CYK and an Earley-style algorithm for parsing Range Concatenation Grammar (RCG), using the deductive parsing framework. The characteristic property of the Earley parser is that we use a technique of range boundary constraint propagation to compute the yields of non-terminals as late as possible. Experiments show that, compared to previous approaches, the constraint propagation helps to considerably decrease the number of items in the chart.
doi:10.3115/1667583.1667587 fatcat:waj45cdlizde7f5c7cursgdunq