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» Analyzing Ambiguity of Context-Free Grammars
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ACL
2010
14 years 7 months ago
Blocked Inference in Bayesian Tree Substitution Grammars
Learning a tree substitution grammar is very challenging due to derivational ambiguity. Our recent approach used a Bayesian non-parametric model to induce good derivations from tr...
Trevor Cohn, Phil Blunsom
COLING
1996
14 years 10 months ago
Computational Complexity of Probabilistic Disambiguation by means of Tree-Grammars
This paper studies the computational complexity of disambiguation under probabilistic tree-grammars as in (Bod, 1992; Schabes and Waters, 1993). It presents a proof that the follo...
Khalil Sima'an
COLING
2008
14 years 11 months ago
Extracting Synchronous Grammar Rules From Word-Level Alignments in Linear Time
We generalize Uno and Yagiura's algorithm for finding all common intervals of two permutations to the setting of two sequences with many-to-many alignment links across the tw...
Hao Zhang, Daniel Gildea, David Chiang
VL
1999
IEEE
134views Visual Languages» more  VL 1999»
15 years 1 months ago
Ambiguity in Visual Language Theory and Its Role in Diagram Parsing
To take advantage of the ever-increasing volume of diagrams in electronic form, it is crucial that we have methods for parsing diagrams. Once a structured, content-based descripti...
Robert P. Futrelle
IJCNLP
2004
Springer
15 years 2 months ago
Chinese Treebanks and Grammar Extraction
Preparation of knowledge bank is a very difficult task. In this paper, we discuss the knowledge extraction from the manually examined Sinica Treebank. Categorical information, wor...
Keh-Jiann Chen, Yu-Ming Hsieh