The nature of statistical learning theory
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Discriminative Reranking for Natural Language Parsing
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Head-driven statistical models for natural language parsing
Head-driven statistical models for natural language parsing
Towards history-based grammars: using richer models for probabilistic parsing
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An efficient implementation of a new DOP model
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Statistical parsing with an automatically-extracted tree adjoining grammar
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An SVM based voting algorithm with application to parse reranking
CONLL '03 Proceedings of the seventh conference on Natural language learning at HLT-NAACL 2003 - Volume 4
Discriminative Reranking for Natural Language Parsing
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Tree kernels for semantic role labeling
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Semantic role labeling via tree kernel joint inference
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Syntactic and semantic kernels for short text pair categorization
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Reverse engineering of tree kernel feature spaces
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On reverse feature engineering of syntactic tree kernels
CoNLL '10 Proceedings of the Fourteenth Conference on Computational Natural Language Learning
Tree kernel-based semantic role labeling with enriched parse tree structure
Information Processing and Management: an International Journal
Fast support vector machines for structural Kernels
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Using syntactic and semantic structural kernels for classifying definition questions in Jeopardy!
EMNLP '11 Proceedings of the Conference on Empirical Methods in Natural Language Processing
Structured lexical similarity via convolution kernels on dependency trees
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Hypotheses selection criteria in a reranking framework for spoken language understanding
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Semantic mapping between natural language questions and SQL queries via syntactic pairing
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Structural relationships for large-scale learning of answer re-ranking
SIGIR '12 Proceedings of the 35th international ACM SIGIR conference on Research and development in information retrieval
Verb classification using distributional similarity in syntactic and semantic structures
ACL '12 Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics: Long Papers - Volume 1
Modeling topic dependencies in hierarchical text categorization
ACL '12 Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics: Long Papers - Volume 1
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We propose the use of Lexicalized Tree Adjoining Grammar (LTAG) as a source of features that are useful for reranking the output of a statistical parser. In this paper, we extend the notion of a tree kernel over arbitrary sub-trees of the parse to the derivation trees and derived trees provided by the LTAG formalism, and in addition, we extend the original definition of the tree kernel, making it more lexicalized and more compact. We use LTAG based features for the parse reranking task and obtain labeled recall and precision of 89.7%/90.0% on WSJ section 23 of Penn Treebank for sentences of length ≤ 100 words. Our results show that the use of LTAG based tree kernel gives rise to a 17% relative difference in f-score improvement over the use of a linear kernel without LTAG based features.