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ACL
2004
15 years 8 months ago
Long-Distance Dependency Resolution in Automatically Acquired Wide-Coverage PCFG-Based LFG Approximations
This paper shows how finite approximations of long distance dependency (LDD) resolution can be obtained automatically for wide-coverage, robust, probabilistic Lexical-Functional G...
Aoife Cahill, Michael Burke, Ruth O'Donovan, Josef...
ACL
2004
15 years 8 months ago
Deep Dependencies from Context-Free Statistical Parsers: Correcting the Surface Dependency Approximation
We present a linguistically-motivated algorithm for reconstructing nonlocal dependency in broad-coverage context-free parse trees derived from treebanks. We use an algorithm based...
Roger Levy, Christopher D. Manning
ACL
2006
15 years 8 months ago
A Best-First Probabilistic Shift-Reduce Parser
Recently proposed deterministic classifierbased parsers (Nivre and Scholz, 2004; Sagae and Lavie, 2005; Yamada and Matsumoto, 2003) offer attractive alternatives to generative sta...
Kenji Sagae, Alon Lavie
NAACL
2003
15 years 7 months ago
Supervised and unsupervised PCFG adaptation to novel domains
This paper investigates adapting a lexicalized probabilistic context-free grammar (PCFG) to a novel domain, using maximum a posteriori (MAP) estimation. The MAP framework is gener...
Brian Roark, Michiel Bacchiani
ACL
1998
15 years 7 months ago
Processing Unknown Words in HPSG
The lexical acquisition system presented in this paper incrementallyupdates linguisticproperties of unknown words inferred from their surrounding context by parsing sentences with...
Petra Barg, Markus Walther