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» Compacting the Penn Treebank Grammar
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ACL
1998
13 years 6 months ago
Compacting the Penn Treebank Grammar
Treebanks, such as the Penn Treebank (PTB), offer a simple approach to obtaining a broad coverage grammar: one can simply read the grammar off the parse trees in the treebank. Whi...
Alexander Krotov, Mark Hepple, Robert J. Gaizauska...
ACL
2006
13 years 6 months ago
Learning Accurate, Compact, and Interpretable Tree Annotation
We present an automatic approach to tree annotation in which basic nonterminal symbols are alternately split and merged to maximize the likelihood of a training treebank. Starting...
Slav Petrov, Leon Barrett, Romain Thibaux, Dan Kle...
ACL
2012
11 years 7 months ago
Estimating Compact Yet Rich Tree Insertion Grammars
We present a Bayesian nonparametric model for estimating tree insertion grammars (TIG), building upon recent work in Bayesian inference of tree substitution grammars (TSG) via Dir...
Elif Yamangil, Stuart M. Shieber
ACL
2010
13 years 2 months ago
Correcting Errors in a Treebank Based on Synchronous Tree Substitution Grammar
This paper proposes a method of correcting annotation errors in a treebank. By using a synchronous grammar, the method transforms parse trees containing annotation errors into the...
Yoshihide Kato, Shigeki Matsubara
ACL
2012
11 years 7 months ago
Exploiting Multiple Treebanks for Parsing with Quasi-synchronous Grammars
We present a simple and effective framework for exploiting multiple monolingual treebanks with different annotation guidelines for parsing. Several types of transformation pattern...
Zhenghua Li, Ting Liu, Wanxiang Che