Tài liệu Báo cáo khoa học: "Combination of Arabic Preprocessing Schemes for Statistical Machine Translation" ppt

... LinguisticsCombination of Arabic Preprocessing Schemes for Statistical Machine TranslationFatiha SadatInstitute for Information TechnologyNational Research Council of Canadafatiha.sadat@cnrc-nrc.gc.caNizar ... the effect of different word-level preprocessing schemes for Arabic on thequality of phrase-based statistical machine translation. We also present and evalu-ate different methods for combining ... that the second form is alsothe verbal form (thus increased ambiguity).4 Arabic Preprocessing Schemes Given Arabic morphological complexity, the num-ber of possible preprocessing schemes is verylarge...

Tài liệu Báo cáo khoa học: "A Syntax-Driven Bracketing Model for Phrase-Based Translation" pptx

... Phrase-based Decoding for Statistical Machine Translation. In Proceedings of ACL.David Chiang. 2005. A Hierarchical Phrase-basedModel for Statistical Machine Translation. In Pro-ceedings of ACL, pages ... Large-Margin Training of Syntactic andStructural Translation Features. In Proceedings of EMNLP.Heidi J. Fox 2002. Phrasal Cohesion and Statistical Machine Translation. In Proceedings of EMNLP,pages ... boundaries of τ(s) (ﬁgure 3(a)),2) inside match, where s exactly spans asequence of τ (s)’s subtrees (ﬁgure 3(b)), and3) crossing, where s crosses the boundaries of one or two subtrees of τ(s)...

... capture syntactization of the given t-node,with values such as n:subj – semantic noun (s.n.) in sub-ject position, n :for+ X – s.n. with preposition for, n:poss –possessive form of s.n., v:because+ﬁn ... Therefore we suggestto use HMTM and tree-modiﬁed Viterbialgorithm for tasks interpretable as label-ing nodes of dependency trees. In par-ticular, we show that the transfer phasein a Machine ... labeling, HMTM canbe used for labeling nodes of a dependency tree,interpreted as revealing the hidden states1in thetree nodes, given another (observable) labeling of the nodes of the same tree.The...

Báo cáo khoa học: "A Hierarchical Phrase-Based Model for Statistical Machine Translation" pptx

... Proceedings of the 43rd Annual Meeting of the ACL, pages 263–270,Ann Arbor, June 2005.c2005 Association for Computational LinguisticsA Hierarchical Phrase-Based Model for Statistical Machine ... The modelis formally a synchronous context-free gram-mar but is learned from a bitext without anysyntactic information. Thus it can be seen asa shift to the formal machinery of syntax-based ... represent D as a set of triplesr, i, j, each of which stands for an application of a grammar rule r to rewrite a nonterminal that spansf(D)jion the French side.3Then the weight of D2This feature...

Báo cáo khoa học: "Private Access to Phrase Tables for Statistical Machine Translation" pptx

... are not aware of any previous work directly ad-dressing the problem we solve, i.e. private accessto a phrase table or other resources for the pur-pose of performing statistical machine translation.Private ... completeretrieval for subsets of increasing size of the 2,000sentence test set, and for phrase tables uniformlysampled at 25%, 50%, 75% and 100%. 217,019distinct digests are generated for all possible ... required for retrieval as a function of thenumber of sentences in the query, for different subsets of the original phrase table.those ﬁles. Complexity hence depends more on thesize of the PT...

Tài liệu Báo cáo khoa học: Roles of heat shock factors in gametogenesis and development pptx

... way for the search of modiﬁergenes that would enhance or diminish the impact of HSF2 deﬁciency.Pending questions for the roles of HSF1 andHSF2 in oogenesis and in early embryosThe role of ... level of the regulation of HSF activity in thebrain is therefore MAP kinase signaling pathways[132].Roles of HSFs during brain normal developmentHsf2 gene inactivation studies were performed ... parts of the Hsf2) ⁄ )brains.A genetic basis for differences in mouse strains ineliciting the HSR has been established as well as for strain differences in heat-sensitivity for the inductionof...

Tài liệu Báo cáo khoa học: Biosynthesis of riboﬂavin Screening for an improved GTP cyclohydrolase II mutant pdf

... Kmvalues of the mutant constructsmay be caused predominantly by an increased off-rate for dissociation of the Michaelis complex. For the timebeing, we are limited to speculation because off-rateshave ... FEBS 4119in light of the small amounts of the trace metabolitethat are required for metabolism and growth. Theselow rates constitute a problem for the further improve-ment of riboﬂavin fermentation ... thatthe ﬁrst reaction step of the enzyme-catalyzed trajec-tory is the covalent guanylation of the enzyme underrelease of pyrophosphate [12]. Carbon 8 of the purinesystem of intermediate 8 is then...

Tài liệu Báo cáo khoa học: Development of a new method for isolation and long-term culture of organ-speciﬁc blood vascular and lymphatic endothelial cells of the mouse pdf

... Japan) for providingpSA-bgeo; Dr Izumo Saito (Institute of MedicalScience, University of Tokyo, Japan) for providingpCAG-Cre; Dr Ikuo Yana (Institute of MedicalScience, University of Tokyo, ... Japan) for help in per-forming endothelial tube formation experiments. Thiswork was supported by grants from the Japan Society for the Promotion of Science (to T. I.) and the Minis-try of Education, ... IchiseLaboratory of Gene Expression and Regulation, Center for Experimental Medicine, Institute of Medical Science, University of Tokyo, JapanAs an indispensable component of the vascular system,endothelial...

Tài liệu Báo cáo khoa học: "Demonstration of the UAM CorpusTool for text and image annotation" docx

... have been necessary where software for automatic annotation has not been available, e.g., for linguistic patterns which are not easily identi-fied by machine, or for languages without suffi-cient ... embedding of segments. Annotated texts are stored using stand-off XML, one file per source text and layer. See Figure 4 for a sample. The software does not currently input from or export to any of ... patterns, and how to perform cross-layer searches of the corpus. 1 Introduction In the last 20 years, a number of tools have been developed to facilitate the human annotation of text. These have...

Tài liệu Báo cáo khoa học: "A Hybrid Convolution Tree Kernel for Semantic Role Labeling" pptx

... by a vec-tor of integer counts of each sub-tree type (regard-less of its ancestors):Φ(T ) = (# of sub-trees of type 1, . . . ,# of sub-trees of type i, . . . ,# of sub-trees of type n)This ... 02-21 for training,section 24 for development, and section 23 for test. In addition, the test set of the shared taskincludes three sections of the Brown corpus. Ta-ble 2 provides counts of sentences, ... harmonic mean of precision andrecall, which is the ﬁnal measure to evaluate theperformances of systems. It is formulated as:Fβ=1= 2pr/(p + r). srl-eval.pl2is the of cialprogram of the CoNLL-2005...

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