Title
A novel disambiguation method for unification-based grammars using probabilistic context-free approximations
Abstract
We present a novel disambiguation method for unification-based grammars (UBGs). In contrast to other methods, our approach obviates the need for probability models on the UBG side in that it shifts the responsibility to simpler context-free models, indirectly obtained from the UBG. Our approach has three advantages: (i) training can be effectively done in practice, (ii) parsing and disambiguation of context-free readings requires only cubic time, and (iii) involved probability distributions are mathematically clean. In an experiment for a mid-size UBG, we show that our novel approach is feasible. Using unsupervised training, we achieve 88% accuracy on an exact-match task.
Year
DOI
Venue
2002
10.3115/1072228.1072303
COLING
Keywords
Field
DocType
unification-based grammar,novel approach,novel disambiguation method,involved probability distribution,probabilistic context-free approximation,context-free reading,ubg side,probability model,mid-size ubg,simpler context-free model,unsupervised training,cubic time,probability distribution
Rule-based machine translation,Computer science,Unification,Probability distribution,Natural language processing,Artificial intelligence,Probabilistic logic,Parsing
Conference
Volume
Citations 
PageRank 
C02-1
3
0.41
References 
Authors
12
3
Name
Order
Citations
PageRank
Bernd Kiefer119425.67
Hans-Ulrich Krieger230.41
Detlef Prescher321930.24