Báo cáo khoa học: " New Ranking Algorithms for Parsing and Tagging: Kernels over Discrete Structures, and the Voted Perceptron" docx

... New Ranking Algorithms for Parsing and Tagging: Kernels over Discrete Structures, and the Voted PerceptronMichael CollinsAT&T Labs-Research,Florham Park, New Jersey.mcollins@research.att.comNigel ... at and are the same, and and are pre-terminals, then .5Else if the productions at and are the same and and are not pre-terminals,where is the number of children of in the tree; because the ... todenote the ’th candidate for the ’th sentence intraining data, and to denote the set of candidates for .Without loss of generality we take to be the correct candidate for (i.e., ).Each candidate...

Báo cáo khoa học: "Re-Ranking Models For Spoken Language Understanding Marco Dinarelli University of Trento Italy" potx

... the 1-besthypothesis) performs a Viterbi search on the FST203 and outputs the n-best hypotheses and projectCperforms a projection of the FST on the output la-bels, in this case the concepts.2.2 ... sequence, and, again, l(·) re-turns the sequence length, i.e. the number of chil-dren.Furthermore, we add two decay factors: µ for the depth of the tree and λ for the length of the child subsequences ... on the use of the corpus and the method to generate the m-best. Weapply two different methods for training: Mono-lithic Training and Split Training.In the former, FSTs are learned with the...

Báo cáo khoa học: New roles of ﬂavoproteins in molecular cell biology: Histone demethylase LSD1 and chromatin pot

... to the peptide used for biochemical and structural studies. The enzyme is speciﬁc for Lys4,which is highlighted in red. R stands for either H or CH3, becauseLSD1 is active on both mono- and ... region and is discussed in the nextsection. The active site of all these amine oxidases is nor-mally located in the proximity of the ﬂavin ring of the FAD cofactor and extends along the substrate-bindingdomain. ... were grown using the recombinant forms of bothproteins comprising residues 157–852 and 305–482 for LSD1 and CoREST, respectively. The LSD1 molecule is in light blue (labels for the different domains...

Báo cáo khoa học: "Exploiting Multiple Treebanks for Parsing with Quasi-synchronous Grammars" doc

... fsib(.) and fgrd(.) correspond to the features for the three kinds of scoring parts. Weadopt the standard features following Li et al.(2011). For the O1 and O2sib models, the aboveformula ... one in the source side and the other in the target side, and denotes the process by which the left-side subtree is transformed into the right-side structure. Functions ψdep(.), ψsib(.), and ψgrd(.) ... point, the target treebank con-tains two sets of annotations, one conforming to the source style, and the other conforming to the targetstyle. During both the training and test phases, the target...

Báo cáo khoa học: "Exploiting Heterogeneous Treebanks for Parsing" pptx

... evaluated two parsing models, the generative parser and the reranking parser, on the test set, with results shown in Table 5. Whentrained on CTB only, the generative parser and the reranking parser ... . The conﬂicts between the two grammarsmay lead to the problem that the selected parsesbased on the information of the source grammarmight not be preferred from the perspective of the 3Available ... optimize parsing perfor-mance on the development set. Table 4 presents the results of the generative parser with variousweights of CTB on the development set. Consid-ering the performance on the...

Báo cáo khoa học: Pleiotropy of leptin receptor signalling is deﬁned by distinct roles of the intracellular tyrosines docx

... plasmid encoding either the short(LEPRa) or the long splicing variant (LEPRb) of the leptin receptor or were not transfected. Cells were serum-starved for 22 h and stimulatedwith the indicated cytokine ... STAT5 and the ERK kinases was induced by leptin. The weakresponse of STAT5 to leptin compared to that elicitedby GH can be partially explained by the rather ineffec-tive transfection of the ... Nuthetal, GermanyLeptin is an adipocyte-secreted hormone that informs the brain about the status of the body’s energy stores.It regulates energy homeostasis through effects on sati-ety and...

Báo cáo khoa học: Thermal behaviour of cubic phases rich in 1-monooleoyl-rac-glycerol in the ternary system docx

... (B) with the extra peak. The dots above the peaks indicate the calculated positionsobtained for the Pn3m structurebasedontheﬁrstpeakinthedif-fractogram.Table 2. Sample composition and the lattice ... reported [13,15, and references therein].These are usually grouped into two main types, namely the discrete and bicontinuous structures. The discrete structureis also known as the micellar type, ... destroying them.Therefore, one of the foremost current issues is concernedwith the problem of obtaining such crystals. A new approach to solve this problem was introduced by Landau and Rosenbusch...

Tài liệu Báo cáo khoa học: "A Ranking-based Approach to Word Reordering for Statistical Machine Translation" doc

... Rankmeans ranking reordering model.our ranking reordering model indeed signiﬁcantlyreduces the crossing-link numbers over the originalsentence pairs. On the other hand, the performanceof the ranking ... cn}, our ranking model assigns a rankf(ci, t) for each child ci, then the children are sortedaccording to the rank in a descending order. The ranking function f has the following form:f(ci, ... targetlanguage – the node in the most front gets the high-est rank, while the ending word in the target sentencegets the lowest rank. The ranking model is trainedto directly minimize the mis-ordering...

Tài liệu Báo cáo khoa học: "Discriminative Lexicon Adaptation for Improved Character Accuracy – A New Direction in Chinese Language Modeling" pptx

... on the other hand, con-siders two simple criterion: the components of a new word occur often together and rarely in con-junction with other words (Saon and Padmanabhan,2001). Compared with the ... On the CCNs weperform the proposed algorithm to add and deletewords into/from the current lexicon. The LM train-ing corpora joined with the adaptation corpus isthen segmented using Lex1 and ... c1c2c3starting at time τ and ending at ti met. and c2, and c2 and c3are recorded respectively as t1 and t2. The posterior probability (PP) of the edge egiven the acoustic features A,...

Báo cáo khoa học: "An IR Approach for Translating New Words from Nonparallel, Comparable Texts" pot

... together with the archived versions, all easily downloadable by software tools running in the background. It is possible to specify the URL of the online site of a newspaper, and the start and ... ~/liougan and other words from this online nonparallel, comparable corpus of newspaper materials. We choose to use issues of the En- glish newspaper Hong Kong Standard and the Chinese newspaper ... in Mandarin. Disregarding all entries with a * in the above table, we apply the algorithm to the rest of the Chinese unknown words and the 118 English unknown words from HKStandard. The...

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