hierarchical phrasebased translation rules

... the translation performance. We em- ploy the relaxed-well-formed dependency struc- ture to constrain both sides of the rule, and about 40% of rules are discarded with improvement of the translation ... statistical machine translation: pa- rameter estimation. Comput. Linguist., 19(2):263– 311. David Chiang. 2005. A hierarchical phrase-based model for statistical machine translation. In ACL 145 ’05: ... kind of evidence that the rules we additional get seem common in the sense of linguistics. Compared to (Shen et al., 2008), we just use the dependency structure to constrain rules, not to maintain...

Ngày tải lên: 20/02/2014, 04:20

... in- correct/redundant rules due to acquisition errors or translation variety in the corpora. Such rules con- flict with other existing rules and cause implausible MT results or increase ambiguity. If incorrect rules could ... translations. A feature of this task is that removing rules is eas- ier than adding rules. The rules used for translating a sentence can be identified during the translation. Conversely, the source sentence ... Japan matsu@is.aist-nara.ac.jp Abstract When rules of transfer-based machine translation (MT) are automatically ac- quired from bilingual corpora, incor- rect/redundant rules are generated due to acquisition errors or translation...

Ngày tải lên: 08/03/2014, 04:22

Ngày tải lên: 23/03/2014, 19:20

Ngày tải lên: 31/03/2014, 01:20

... Introduction The hierarchical phrase-based model (Chiang, 2007) makes an advance of statistical machine translation by employing hierarchical phrases, which not only uses phrases to learn local translations ... machine translation. In Proc. of ACL, pages 72–80. David Chiang. 2005. A hierarchical phrase-based model for statistical machine translation. In Proc. of ACL, pages 263–270. David Chiang. 2007. Hierarchical ... (2003) presented a chunk-to-string translation model where the decoder generates a translation by first translating the words in each chunk, then reordering the translation of chunks. Our model...

Ngày tải lên: 19/02/2014, 19:20

... latent translation variables. Most of the aforementioned work does concen- trate on learning hierarchical, linguistically moti- vated translation models. Cohn and Blunsom (2009) sample rules of ... model and an SCFG without ‘gap rules . Instead of employing hierarchical phrase-pairs, we invest in learning the higher-order hierarchical syn- chronous structure behind translation, up to the full sentence ... latent recursive structures targeting translation, we achieve significant improvements in translation quality for 4 different language pairs in comparison with a strong hierarchical translation baseline. Our...

Ngày tải lên: 20/02/2014, 04:20

... corpora for machine translation. By uti- lizing Semantic role labeling (SRL) on one side of the language pair, we extract SRL sub- stitution rules from existing parallel corpus. The rules are then ... training phrase-based translation models, which can be used directly in translation tasks or combined with base- line models. Experimental results on Chinese- English machine translation tasks show ... for Computational Linguistics Corpus Expansion for Statistical Machine Translation with Semantic Role Label Substitution Rules Qin Gao and Stephan Vogel Language Technologies Institute, Carnegie...

Ngày tải lên: 20/02/2014, 04:20

Ngày tải lên: 20/02/2014, 07:20

... from section 4 and finally result in a better overall translation performance. 6 Translation as a Search Problem The problem of finding the translation of a sen- tence can be viewed as a search ... model, the rule probabilities and the translation probabilities. In the search tree every node represents a partial translation for the first words or a full translation. The leaves of the tree ... Learning of Translation Rules The incorporation of TRs adds an "example- based" touch to the statistical approach. In a very naive approach a TR could be represented by a translation...

Ngày tải lên: 08/03/2014, 05:21

... Harvard U. David Chiang. 2005. A hierarchical phrase-based model for statistical machine translation. In Proceedings of ACL-05, pages 263–270. David Chiang. 2007. Hierarchical phrase-based transla- tion. ... generalization of the standard non -hierarchical phrase extraction ap- proach in order to acquire the synchronous rules of the grammar directly from word-aligned paral- lel text. Rules have the form X → ... in non -hierarchical phrase-based models like Pharaoh (Koehn et al., 2003). In addition to this phrase translation probability feature, Hiero’s fea- ture set includes the inverse phrase translation...

Ngày tải lên: 17/03/2014, 02:20

Ngày tải lên: 17/03/2014, 05:20

Ngày tải lên: 23/03/2014, 14:20

Ngày tải lên: 23/03/2014, 14:20

Ngày tải lên: 23/03/2014, 14:20

Ngày tải lên: 23/03/2014, 16:20

Ngày tải lên: 23/03/2014, 16:20

Ngày tải lên: 24/03/2014, 03:20

Ngày tải lên: 31/03/2014, 01:20

... đã được relay bởi NAT Phần I: Giới thiệu tổng quan về NAT (Network Address Translation) I : NAT (Network Address Translation) là gì ? NAT giống như một router, nó chuyển tiếp các gói tin giữa...

Ngày tải lên: 15/08/2012, 10:40

... could be very inecient. 2.3 Hierarchical signaling In a traditional hierarchical network like the tradi- tional telephone network 11], user addresses are orga- nized hierarchically.Each SP has ... level bottlenecks. 3 Virtually hierarchical signaling 3.1 Virtually hierarchical system The main disadvantage of a traditional hierarchi- cal network is that it restricts the network topology to be hierarchical ... Connections Centralized O(1) n Distributed O(d) deg(u) Hierarchical O(log B (N )) O(B ) Figure 1: Signaling System Performance Compari- son O(d). The traditional hierarchical signaling system scales well,...

Ngày tải lên: 24/08/2012, 21:13