Joint Parsing and Translation

Tree-based translation models, which exploit the linguistic syntax of source language, usually separate decoding into two steps: parsing and translation. Although this separation makes tree-based decoding simple and efficient, its translation performance is usually limited by the number of parse trees offered by parser. Alternatively, we propose to parse and translate jointly by casting tree-based translation as parsing. Given a source-language sentence, our joint decoder produces a parse tree on the source side and a translation on the target side simultaneously. By combining translation and parsing models in a discriminative framework, our approach significantly outperforms a forest

• Type: Journal
• Year: 2010
• Where: COLING
• Authors: Yang Liu, Qun Liu
• Keywords: COLING 2010, Computational Linguistics, Parse Tree, Parsing, Tree-based Translation