Báo cáo khoa học: "Specifying the Parameters of Centering Theory: a Corpus-Based Evaluation using Text from Application-Oriented Domains" pot

... pop- ular variants of centering theory, and using this corpus to automatically check two central claims of the theory, the claim that all utterances have a backward looking center ( CB) (Constraint ... subsection of a leaflet was treated as a separate segment. We then identified by hand those violations of Constraint 1 that ap- peared to be motivated by too broad a segme...

Ngày tải lên: 31/03/2014, 04:20

... Linguistics Assessing the Effect of Inconsistent Assessors on Summarization Evaluation Karolina Owczarzak National Institute of Standards and Technology Gaithersburg, MD 20899 karolina.owczarzak@gmail.com Peter A. ... per- fect either. We investigate two ways of measuring evaluation consistency in order to see what effect it has on summarization evaluation and training of au-...

Ngày tải lên: 30/03/2014, 17:20

... data on the properties of mammalian trans- glutaminases, particularly as regards their protein substrates and the relevance of transglutaminase-catalysed reactions in physiological and dis- ease ... that catalyse the Ca 2+ -dependent post-translational modification of proteins. Despite significant advances in our understanding of the biolo- gical role of most mammalian transgl...

Ngày tải lên: 30/03/2014, 15:20

... that is crucial to the generation and transduction of a mitochondrial signal that regulates copper efflux from the cell. Neither the players nor the molecular mechanisms of the signalling pathway ... COX is the terminal component of the respiratory chain, located in the inner mitochondrial membrane of eukaryotes and in the plasma membrane of many prokaryotes. T...

Ngày tải lên: 14/02/2014, 18:20

... UDP-glucuronate and UDPGlcNAc, and the assay was initiated by addition of these two nucleotides. Where indicated, the assay was initiated by the addition of the enzyme preparation to an otherwise complete assay mixture. ... metyrapone. ATP-Mg was omitted from the UDP-glucuronate pyrophos- phatase assay, also performed at 37 °C. 4-Np-UGT was assayed with 0.2 m M 4-nitrophenol a...

Ngày tải lên: 19/02/2014, 07:20

... propionate, CoASH and ATP catalysed b y acetyl-CoA synthetase, F acA [4,5], and by an additional acyl-CoA synthetase. The condensation of p ropionyl-CoA with oxaloacetate inside the mitochondria yields ... [46] Fab4-J3 MH2671 cotransformed with pFAB4 and pAN222 (approx. 4–8 copies facB) [46] A6 37 yA2, pabaA1, pdhA1 FGSC, Kansas City, KS, USA A6 34 yA2, pabaA1; pdhB4 FGSC, Kansas City...

Ngày tải lên: 19/02/2014, 16:20

... verbal predicate, the translation of the head word of the argument, as well as the boundary words of the translation of the argument are used as features. 4.3 Training To train the argument reordering ... fea- tures include the verbal predicate, the semantic role of the argument, the head word and the boundary words of the argument. On the target side,...

Ngày tải lên: 19/02/2014, 19:20

... hundreds of thousands of parameters at once in a non-trivial way, so we need a way of characterizing the important changes. One broad observation we can make is that the first iteration of EM reinforces ... subjective. Instead, we propose using a general meta-model to analyze the changes EM makes in an automatic and objective way. Instead of treating parameters as...

Ngày tải lên: 20/02/2014, 09:20

... represents the weight of a feature. All the feature functions are real-valued and can use adja- cent label information. Semi-CRFs are actually a restricted version of order-L CRFs in which all the labels ... information because, in many cases, the previous label of a named entity is “O”, which indicates a non-named entity. For 98.0% of the named entities in the tra...

Ngày tải lên: 20/02/2014, 12:20

... schemata are manually identified as peripheral rather than core rules of English grammar. Categories are matched using fixed- arity term unification at parse time. The lexical categories of the grammar ... macroaverage is calculated by taking the average of each measure for each indi- vidual relation and feature; the microaverage mea- sures are calculated from the counts for...

Ngày tải lên: 20/02/2014, 12:20