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Generalized Shortest-Paths Encoders for AMR-to-Text Generation ...
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Unsupervised Bilingual Lexicon Induction Across Writing Systems ...
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Semantic Neural Machine Translation Using AMR
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In: Transactions of the Association for Computational Linguistics, Vol 7, Pp 19-31 (2019) (2019)
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Addressing the Data Sparsity Issue in Neural AMR Parsing ...
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Simultaneous Word-Morpheme Alignment for Statistical Machine Translation ...
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Simultaneous Word-Morpheme Alignment for Statistical Machine Translation ...
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Using latent information for natural language processing tasks
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Abstract:
Thesis (Ph. D.)--University of Rochester. Dept. of Computer Science, 2013. ; In a broad sense, latent information in natural language processing tasks refers to any information that is not plainly observable from raw data. Such latent information is found in abundance in many natural language processing tasks. Learning latent information itself could be the purpose of the task or it can be learned and utilized to improve relevant tasks. For example, in unsupervised learning of word alignment from parallel corpora, learning latent information is the task. Learning latent annotation for context free grammar falls into the latter category since latent annotation leads to better parsing accuracy. Depending on the availability of the data, latent information may be learned in a supervised manner or an unsupervised manner. This dissertation presents three different types of latent information that are learned and used to improve various natural language processing tasks, mainly focusing on different stages of machine translation. First, we discuss unsupervised learning of tokenization from parallel corpora using alignment between a bilingual sentence pair as latent information. Second, we examine using empty categories to improve parsing and machine translation. In these tasks, empty categories are latent information that are learned from raw text and applied to the respective tasks. Finally, we look at learning latent annotation for synchronous context free grammar, which leads us to more accurate and faster string-to-tree machine translation.
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Keyword:
Empty category; Latent annotation; Machine translation; Synchronous context free grammar; Tokenization
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URL: http://hdl.handle.net/1802/26850
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On word alignment models for statistical machine translation
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