Statistical Parsing of Tree Wrapping Grammars
Tatiana Bladier, Jakub Waszczuk, Laura Kallmeyer · 2020
We describe an approach to statistical parsing with Tree-Wrapping Grammars (TWG).TWG is a tree-rewriting formalism which includes the tree-combination operations of substitution, sisteradjunction and tree-wrapping substitution.TWGs can be extracted from constituency treebanks and aim at representing long distance dependencies (LDDs) in a linguistically adequate way.We present a parsing algorithm for TWGs based on neural supertagging and A * parsing.We extract a TWG for English from the treebanks for Role and Reference Grammar and discuss first parsing results with this grammar.