[PDF] Top 20 Syntactic Constraints on Phrase Extraction for Phrase Based Machine Translation

... the phrase table in a PBMT system using Fisher’s exact ...each phrase pair and prune the table by deleting phrase pairs with significance values smaller than a certain ...filtering phrase ... See full document

... hierarchical phrase-based machine translation systems with linguistically moti- vated syntactic ...tent syntactic categories automatically from a source-side parsed, word-aligned ... See full document

... Syntactic phrase extraction specifies a node-to- node alignment across parallel parse ...of syntactic grammar extraction (Lavie et ...extracted phrase pairs, which have cat- ... See full document

... extract phrase pairs in the standard way (Och & Ney, 2003) and associate with each phrase-pair a set of target language syntactic struc- tures based on supertag ...robust syntactic ... See full document

... the constraints of Shen et al. (2010) and this paper are based on different syntactic perspectives ...some translation rules that are not found in Hiero sys- tems constrained by the ... See full document

... ally better to decode in a forward direction. Our main contribution has been to show that a bidirec- tional decoding strategy is superior to both mono- directional decoding strategies. It might be argued that the gains ... See full document

... Recently, phrase-based translation approaches became more and more ...simple phrase-based approach is described that served as starting point for the system in this ...for ... See full document

... hierarchical phrase-based (HPB) translation model advances the state-of-the-art in statistical machine translation by expanding conventional phrases to hierarchical phrases – phrases ... See full document

... tistical machine translation (SMT). Current phrase-based SMT technologies are good at capturing local reordering but not global ...introduces syntactic knowledge to improve global ... See full document

... preordering based on Bracketing Transduction Gram- mar (BTG). The BTG-based preordering framework (Neubig et ...A phrase-based machine translation sys- tem with the top-down ... See full document

... sentence based on pre- defined, linguistically motivated ...rules based on target-side parses is relatively easy and cheap to implement in different language ... See full document

... Hierarchical phrase-based models pro- vide a powerful mechanism to capture non-local phrase reorderings for statis- tical machine translation ...many phrase reorderings are arbi- ... See full document

... statistical machine transla- tion focus on the use of n-grams, which provide a simple finite-state model approximation of the tar- get ...that syntactic structure could be used as an alterna- tive technique ... See full document

... Another interesting observation is that reordering rules learned from automatic alignments lead to significantly better translation than rules learned from manual alignment. Due to the much higher quality of the ... See full document

... ITG constraints a dynamic program- ming search algorithm exists as described in the previous ...or phrase by ...ITG constraints if and only if it contains (3, 1, 4, 2) or (2, 4, 1, 3) as a ... See full document

... a phrase-based system is problematic. Phrase- based systems build the result incrementally from the beginning of the target string to the end, and the intermediate strings need not constitute ... See full document

... improve translation output– has been explored by many ...for translation from French to English, where context-free constituency reordering rules are acquired automatically using source and target parses ... See full document

... (whose phrase table features take into account the primary corpus) is not better than a contrastive com- bination system with vanilla scoring, ...solely based on the secondary ...German phrase Bei ... See full document

... English with large distance reorderings between phrases are more prone to search errors and benefit more from our pruning algorithm. To illustrate this, let us consider the source sentence “John married in Portugal”, and ... See full document

... that phrase pairs that oc- cur in only one sentence pair, ( C(˜ s, t) = 1 ˜ ), are less reliable and might require more special ...of phrase pairs with ( C(˜ s, ˜ t) = 1 ) that was more ... See full document