Báo cáo khoa học: "Regression for Sentence-Level MT Evaluation with Pseudo References" pdf
Báo cáo khoa học: "Regression for Sentence-Level MT Evaluation with Pseudo References" pdf
... correlations with human judgmentsthan when higher-ordered n-grams are included.SysID Human-assessment score MT1 0.661 MT2 0.626 MT3 0.586 MT4 0.578 MT5 0.537 MT6 0.530 MT7 0.530 MT8 0.375 MT9 0.332 MT1 0 ... the pseudo references, the quality of MT systems being evaluated, and the diversity overthe distribution of training examples).Specifically, we reserved four systems (MT2 , MT5 , MT6 , and MT9 ) for ... 296–303,Prague, Czech Republic, June 2007.c2007 Association for Computational LinguisticsRegression for Sentence-Level MT Evaluation with Pseudo ReferencesJoshua S. Albrecht and Rebecca HwaDepartment...
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Tài liệu Báo cáo khoa học: "Extending the BLEU MT Evaluation Method with Frequency Weightings" pdf
... scores for both runs were compared using a standard deviation measure. 3. The results of the MT evaluation with frequency weights With respect to evaluating MT systems, the cor-relation for ... weights are shown to be consistent with baseline BLEU evaluation results for Fluency and outperform the BLEU scores for Adequacy (where the correlation for the S-score weighting is higher). ... available in DARPA-94 MT evaluation corpus (White et al., 1994). The proposed weighted N-gram model for MT evaluation is tested on a set of translations by four different MT systems available...
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Tài liệu Báo cáo khoa học: "Methods for the Qualitative Evaluation of Lexical Association Measures" doc
... for evaluation General statistics for the AdjN and PNV basesets are given in Table 1. Manual annotation wasperformed for AdjN pairs with frequencyand PNV triples with only (see section5 for ... aroundthe best-performing measure for the AdjN data with (log-likelihood).There is no significant difference between log-likelihood and t-test. And only for -best lists with , frequency performs marginallysignificantly ... best measure for identifying AdjN collocations, except for -coordinates between 15% and 20% where t-testoutperforms log-likelihood. For PNV data, the curves of all measures (ex-cept for frequency)...
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Tài liệu Báo cáo khoa học: "Guiding Statistical Word Alignment Models With Prior Knowledge" pdf
... in-dicating being a name or not. Without these con-straints, t-table entries for names with low frequencytend to be flat and word alignments can be chosenrandomly without sufficient statistics or ... translation performance by theBLEU score (Papineni et al., 2002) and TranslationError Rate (TER) (Snover et al., 2006) with one ref-erence for each hypothesis. Word alignment mod-els trained with different ... assume that a name is produced by a name with a high probability but by a non-name with alow probability, i.e. P(F = E) >> P(F = E),proper names with low counts then are encouragedto...
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Báo cáo khoa học: "An Interactive Machine Translation System with Online Learning" pdf
... probability:ˆe = argmaxeP r(e|f ) (1)Within the IMT framework, a state-of-the-artSMT system is employed in the following way. For a given source sentence, the SMT system automati-cally generates ... in the literature to reportIMT results. The corpus consists of approximately50,000 sentences pairs for training, 1,000 for devel-opment, and 1,000 for test.The evaluation criteria used in ... the other three languages, compar-ing the performance of a batch IMT (baseline) andthe online IMT systems. The batch IMT systemis a conventional IMT system which is not able totake advantage...
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Báo cáo khoa học: "Combining a Statistical Language Model with Logistic Regression to Predict the Lexical and Syntactic Difficulty of Texts for FFL" potx
... tolink an inflected form with its lemma. Sucha view seems highly questionable for the ma-jority of regular forms.In order to settle this issue, we trained threelanguage models: one with lemmas (LM1),another ... (LM1),another with inflected forms disambiguatedaccording to their tags (LM2), and a thirdone with inflected forms (LM3). The ex-periment was not very conclusive, since themodels all correlated with ... classical formu-lae for French (such as de Landsheere (1963) orHenry (1975)) on our corpus. So we are limited tocomparing our evaluation measures with those inthe published literature. With multinomial...
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Tài liệu Báo cáo khoa học: Looking for the ancestry of the heavy-chain subunits of heteromeric amino acid transporters rBAT and 4F2hc within the GH13 a-amylase family ppt
... Mayrose I, BacharachE & Pupko T (2005) Selecton: a server for detectingevolutionary forces at a single amino-acid site. Bioin-formatics 21, 2101–2103.39 Da Lage JL, Danchin EG & Casane ... effort to shed more light on the early evolutionary history of theheavy-chain subunits of heteromeric amino acid transporters (hcHATs)rBAT and 4F2hc within the a-amylase family GH13, a bioinformaticsstudy ... enzymes from the a-amylase family. We there-fore carried out a bioinformatics study focused on adetailed comparison of all available rBAT and 4F2hcsequences with GH13 enzyme representatives coveringmainly...
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Tài liệu Báo cáo khoa học: Role for nectin-1 in herpes simplex virus 1 entry and spread in human retinal pigment epithelial cells docx
... cells were washed with NaCl ⁄ Piand fixed with 2% formaldehyde and 0.2% glutaradehyde at room temper-ature for 15 min. The cells were then washed with NaCl ⁄ Piand permeabilized with 2 mm MgCl2, ... phalloidin (Invitrogen) was added for F-actin staining at room temperature for 45 min. Finally, thecells were washed three times with 1· NaCl ⁄ Pibefore micros-copy was performed using the 20· objective ... RT-PCRanalysis was performed as described previously. Theexpected sizes of the PCR products were 1270 bp for HVEM, 738 bp for nectin-1, 616 bp for nectin-2, and736 bp for 3-OST-3, respectively....
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Tài liệu Báo cáo khoa học: Evidence for noncooperative metal binding to the a domain of human metallothionein ppt
... fold-ing of MT results in the formation of discrete metal–thiolate clusters within each of the a and b domains with stoichiometries of [M4(Scys)11] and [M3(Scys)9],respectively, for divalent ... the meas-ured spectra. Calculated mass: Cd4a-rhMT,4083.0 Da; Cd1a-rhMT, 4193.4 Da;Cd2a-rhMT, 4303.8 Da; Cd3a-rhMT,4414.2 Da; Cd4a-rhMT, 4524.6 Da.K. E. Rigby Duncan and M. J. Stillman ... metal-bindingstudiesMetal-free apo-a-rhMT was prepared by eluting the throm-bin-cleaved Cd-bound protein from a G-25 column equili-brated with a low-pH eluant. Apo -MT prepared for theCD studies was eluted with 10 mm...
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Tài liệu Báo cáo khoa học: Progress for dengue virus diseases Towards the NS2B–NS3pro inhibition for a therapeutic-based approach ppt
... haselectrostatic interactions with Y150 and S163 andforms two H-bonding interactions with D129[116,132]. Thus, when P1 Arg is replaced with Phe orTrp, the hydrogen bonds with Y150 and S163 are lost,but ... important not only for the correctfold of the protease but also for the correct interaction with the substrate. The binding site of the NS2B cofac-tor could be examined for a view to inhibitor ... proteins, most of the NSproteins associate with the 3¢-UTR of viral RNA toform a replication complex for RNA synthesis [2]. Theassociation of protein C with genomic RNA on thecytosolic face of...
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