Báo cáo khoa học: "A Comparative Study on Generalization of Semantic Roles in FrameNet" ppt

... the training data.4.3 Semantic type of phrasesWe consider that the selectional restriction is help-ful in detecting the semantic roles. FrameNet pro-vides information concerning the semantic ... relations among roles FrameNet deﬁnes hierarchical relations amongframes (frame-to-frame relations). Each relationis assigned one of the seven types of directionalrelationships (Inheritance, Using, ... group Giv-ing::Donor (in the hierarchical-relation groups)contains the roles Giving::Donor and Com-merce pay::Buyer. The remainder of this sectiondescribes the grouping criteria in detail.4.1...

Báo cáo khoa học: "A Comparative Study on Reordering Constraints in Statistical Machine Translation" potx

... length of 30 words.Table 3 shows the training and test corpus statistics.5 Evaluation in Training In this section, we will investigate for each of theconstraints the coverage of the training ... con-straints in detail. The ﬁrst constraints are based on inversion transduction grammars (ITG) (Wu, 1995;Wu, 1997). In the following, we will call these theITG constraints. The second constraints ... probability of a inverted concatenation 1 − pm.Now, we have obtained two word graphs: one for amonotone and one for a inverted concatenation. Theﬁnal word graphs is constructed by merging the...

Báo cáo khoa học: "A Comparative Study of Reinforcement Learning Techniques on Dialogue Management" pdf

... satisfaction. An-other beneﬁt of RL is that it can be trained usingeither real or simulated users and continue to learnand adapt with each interaction (in the case of on- line learning). To ... simulates interactions. Learning or model-free algorithms only use training examples fromprevious interactions with the environment andthat is the main difference of these two categories,according ... pp150–174.31Proceedings of the EACL 2012 Student Research Workshop, pages 22–31,Avignon, France, 26 April 2012.c2012 Association for Computational LinguisticsA Comparative Study of Reinforcement Learning...

Báo cáo khoa học: "A Comparative Study of Parameter Estimation Methods for Statistical Natural Language Processing" potx

... number of non-zero features after estima-tion, number of training iterations, and computation time (in minutes of elapsed time on an XEONTM MP 3.6GHz machine). 3.1 Parse re-ranking We ... orthant containing the current point and into which the direction giving the greatest local rate of function decrease points. This algorithm, although only a simple modifi-cation of L-BFGS, ... Proceedings of the 45th Annual Meeting of the Association of Computational Linguistics, pages 824–831,Prague, Czech Republic, June 2007.c2007 Association for Computational LinguisticsA Comparative...

Báo cáo khoa học: "A Comparative Study of Hypothesis Alignment and its Improvement for Machine Translation System Combination" pot

... Combining Outputs from Machine Translation Systems. In Proceeding of EMNLP. Hawaii, US, Oct. F. Huang and K. Papinent. 2007. Hierarchical System Combination for Machine Translation. In Proceed-ings ... alignments, and then continuously add new links between backbone and hypothesis if and only if both of the two words of the new link are un-aligned and this link exists in the union of two word alignments. ... 2001. Computing consensus translation from multiple machine translation systems. In Proceeding of IEEE workshop on Automatic Speech Recognition and Understanding, pp. 351–354. Madonna di Campiglio,...

Báo cáo khoa học: A comparative study of methylglyoxal metabolism in trypanosomatids potx

... time of the contaminating hydrazone was consistent with theimpurity in the l-lactaldehyde preparation being acetone orpropionaldehyde (as shown by comparison with the hydra-zones of acetone ... for 72 h. Concentrations of inhib-itor causing a 50% reduction in growth (EC50) were deter-mined using the following two-parameter equation bynonlinear regression using grafit:y ¼1001 ... d-threonine, as previouslydescribed [38]. Brieﬂy, 25 mmol of d-threonine, 9.1 g of nin-hydrin and 600 mL of 0.05 m sodium citrate buffer (pH 5.4)were combined and boiled for 15 min with continual...

Báo cáo khoa học: A comparative study of type I and type II tryparedoxin peroxidases in Leishmania major pot

... used in earlier studies. Dif-ferences in assay conditions or the presence of a histi-dine tag on the longer N-terminus of TbTDPX3 mightalso be contributing factors. Nonetheless, in terms of ... mutagenesis of TDPX1. The initiator and terminator codons are in bold and the restriction sites are underlined. The codons of the mutated amino acids are in bold.Cloned protein or mutation primer ... andcentrifuged again under the same conditions. Finally, para-sites were resuspended in 0.4 mL of 50 mm Tris ⁄ HCl pH 8.0,9 m urea, and 0.1% Triton X-100 for determination of pro-tein concentration. For...

Báo cáo khoa học: "A Comparative Study of Target Dependency Structures for Statistical Machine Translation" ppt

... Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics, pages 100–104,Jeju, Republic of Korea, 8-14 July 2012.c2012 Association for Computational LinguisticsA Comparative ... Comparison of the dependencies of the Englishsentences in the training data. Without () = % of similarroot words; with () = % of similar head words.2008). In terms of head word comparison, PAS+synand ... best by avoiding the errors of missing of arguments for a predicate, wronglyidentiﬁed head words for a linguistic phrase, and in- consistency dependencies inside relatively long co-ordinate structures....

Báo cáo khoa học: "A Geometric View on Bilingual Lexicon Extraction from Comparable Corpora" pptx

... thesauri and modelcombination for bilingual lexicon extraction. In International Conference on Computational Lin-guistics, COLING’02.A. P. Dempster, N. M. Laird, and D. B. Ru-bin. 1977. Maximum ... corpora. In Proceeding of the Conference on Content-Based Multimedia Information Ac-cess (RIAO).Pascale Fung. 2000. A statistical view on bilinguallexicon extraction - from parallel corpora to non-parallel ... we can gain over the com-bination we used here.8 ConclusionWe have shown in this paper how the problem of bilingual lexicon extraction from comparable cor-pora could be interpreted in geometric...

Báo cáo khoa học: "A step towards the detection of semantic variants of terms in technical documents Thierry Hamon and Adeline " potx

... of the filtering step in regard to the coverage of our corpus by the dictionary. 2.3 Second step: Detection of synonymous candidate terms Assuming that the semantics and the synonymy of ... preserves semantic relation. For instance, in graph theory, the link (arbre (tree) / feuille (leaf)) can be inferred from the meronyny in- formation of general dictionary. Those types of wrong ... plied to the links extracted from the dictionary. Indeed, while the synonymy is sometimes very contextual in the dictionary, the links appear in the data without context information and would...

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