2002 NewRankingAlgsForParsingAndTaggingKernels

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Subject Headings: Kernel-based Learningn Algorithm

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Abstract

This paper introduces new learning algorithms for natural language processing based on the perceptron algorithm. We show how the algorithms can be efficiently applied to exponential sized representations of parse trees, such as the “all subtrees” (DOP) representation described by (Bod 1998), or a representation tracking all sub-fragments of a tagged sentence. We give experimental results showing significant improvements on two tasks: parsing Wall Street Journal text, and namedentity extraction from web data.

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 AuthorvolumeDate ValuetitletypejournaltitleUrldoinoteyear
2002 NewRankingAlgsForParsingAndTaggingKernelsMichael Collins
Nigel Duffy
New Ranking Algorithms for Parsing and Tagging: Kernels over Discrete Structures, and the Voted Perceptronhttp://acl.ldc.upenn.edu/P/P02/P02-1034.pdf