Phrase chunking

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Unsolved problem in computer science:

Is there any perfect phrase chunking algorithm in English language?

Phrase chunking is a phase of natural language processing that separates and segments a sentence into its subconstituents, such as noun, verb, and prepositional phrases, abbreviated as NP, VP, and PP, respectively. Typically, each subconstituent or chunk is denoted by brackets.[1]

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  1. ^ Erik F. Tjong Kim Sang and Sabine Buchholz. 2000. Introduction to the conll-2000 shared task: chunking. In Proceedings of the 2nd workshop on Learning language in logic and the 4th CONLL, pages 127–132, Morristown, NJ, USA. Association for Computational Linguistics.