Tài liệu Báo cáo khoa học: "Tabular Algorithms for TAG Parsing" potx

... several tabular algorithms for Tree Adjoining Grammar parsing, creating a continuum from simple pure bottom-up algorithms to complex pre- dictive algorithms and showing what transformations must ... resenting structure. Several parsing algorithms have been proposed for this formalism, most of them based on tabular techniques, ranging from simple bottom-up algorithms (Vijay-Shanker and Joshi, ... However, it is diffi- cult to inter-relate different parsing algorithms. In this paper we study several tabular algorithms for TAG parsing, showing their common characteris- tics and how one...

Tài liệu Báo cáo khoa học: "Self-Training for Biomedical Parsing" doc

... June 2008.c2008 Association for Computational LinguisticsSelf-Training for Biomedical ParsingDavid McClosky and Eugene CharniakBrown Laboratory for Linguistic Information Processing (BLLIP)Brown ... al.,2006a; McClosky et al., 2006b).One possible use for this technique is for parser adaptation — initially training the parseron one type of data for which hand-labeled treesare available (e.g., ... results on self-training for pars-ing were n egative (Steedman et al., 2003; Char-niak, 1997). However more recent results haveshown that it can indeed improve parser perfor-mance (Bacchiani...

Tài liệu Báo cáo khoa học: "Non-deterministic Recursive Ascent Parsing" potx

... share also the same parse forest for a, we can represent the context of A * a~ itself and the common parse forest for a only once and fit the set of parse forests for fl into that. Again this ... [S' * .S](0). The recursive descent recognizer works for any CF grammar except for grammars for which ~A~(A * aAcr ** A3). For such left-recursive grammars the rec- ognizer does not ... the parse forest of all derivations from /~ E V* to zi+~ x~, for all i,j such that 0 < i < j < n. The following recursive definitions fix the parse forest repre- sentation formally:...

Tài liệu Báo cáo khoa học: A strategy for discovery of cancer glyco-biomarkers in serum using newly developed technologies for glycoproteomics ppt

... malignant transformation.Lectin microarray – a powerfultechnology for selection of lectins for cancer glyco-biomarkersThe lectin microarray system is an emerging technique for analyzing glycan ... microarray system is the best tool for a ‘cell proﬁler’, and it is expected to be applicable for selection of cancer-speciﬁc lectins and for qualitycontrol of stem cells before transplantation [12–15].Recently, ... technologies for highly sensitive and high-through-put glycan structural analysis, i.e. a strategy for theidentiﬁcation of oligosaccharide structures using obser-vational multistage mass spectral...

Tài liệu Báo cáo khoa học: Structural bases for recognition of Anp32⁄LANP proteins doc

... transfected withpBudCE4.1 vector expressing V5-tagged Clip 170 and c-Myc-tagged Anp32a. Forty-eight hours after transfection,cells were ﬁxed using 4.0% paraformaldehyde, permeabi-lized with 0.2% ... 000 and 12 000 in theﬁrst and second cooling stages of the annealing, respec-tively. Floating assignment for prochiral groups and correc-tion for spin diffusion during iterative NOE assignmentwere ... London) for providing the Lanp clone,which was produced from a cDNA originally providedby Dr A. Matilla (ICH, London), Filippo Prischi for help with the gromacs software, and Dr L Masino for helpful...

Tài liệu Báo cáo khoa học: Structural basis for cyclodextrin recognition by Thermoactinomyces vulgaris cyclo⁄maltodextrin-binding protein ppt

... cleft formed by the twodomains. A common functional conformational change has been reportedin this protein family, which involves switching from an open formto a sugar-transporter bindable form, ... [11,15]. A common drasticconformational change is found in this protein family,which participates in switching from an open form toa closed form [16]. In EcoMBP, the closed form hasbeen observed ... deﬁned in terms not of the afﬁnities for sugars but of whether the protein adopts the openform or the closed form. TvuCMBP–c-CD complex isseen as the closed form (Fig. 2A,B), and this struc-ture...

Tài liệu Báo cáo khoa học: Experimental proof for a signal peptidase I like activity in Mycoplasma pneumoniae, but absence of a gene encoding a conserved bacterial type I SPase pdf

... product P40 of MPN142,formerly called ORF6 gene. Combining mass spectrometry with a method for sulfonating speciﬁcally the free amino terminal group of proteins, thecleavage site for a typical signal ... SPase typical for Gram-positive bacteria or for Gram-negative bacteria(such as LepB) has been identiﬁed in M. pneumoniae,although a SPase I activity has been shown to beessential for cell viability ... Biosystems).AcknowledgementsWe thank E. Pirkl and M. Ellis for skillful technicalassistance, C U. Zimmerman for critically reading themanuscript, M. T. Saleh for providing the latest resultsof a signal...

Tài liệu Báo cáo khoa học: "A Framework for Syntactic Translation" docx

... be developed. At any stage in the development of mechanical translation there will be some things that are perfectly understood and can therefore serve as the basis for perfect translation. ... S1, which contains all of the information that is in the input sentence. The part of the information that is implicit in the sentence (tense, voice, and so forth) is made explicit in S1. ... certain German verb form into English, it is necessary to un- derstand the German verb form as part of a complex of features of German structure in- cluding possibly other verb forms within the...

Tài liệu Báo cáo khoa học: "Dependency Hashing for n-best CCG Parsing" doc

... accepts POS-tagged text as input; un-like many PTB parsers, these tags are ﬁxed andremain unchanged throughout during the parsingpipeline. The POS tags are important features for thesupertagger; ... and auto POS tags.Table 6 shows a corresponding drop in upper boundaccuracy from 94.32% with gold POS tags to 92.60%with auto POS tags. Both the supertagger and parseruse POS tags independently ... be tagged correctly.The β parameter restricts the categories to withina probability beam, and the tag dictionary restrictsthe set of categories that can be considered for eachword. Supertagger...

Tài liệu Báo cáo khoa học: "Topic Models for Dynamic Translation Model Adaptation" pptx

... unseen for a given domain s, we are alreadyperforming an implicit form of smoothing (whencomputing the expected counts), since each docu-ment has a distribution over all topics, and thereforewe ... Meeting of the Association for Computational Linguistics, pages 115–119,Jeju, Republic of Korea, 8-14 July 2012.c2012 Association for Computational LinguisticsTopic Models for Dynamic Translation ... appropriate.However, in both settings, 10 topics performed best.4 Discussion and ConclusionApplying SMT to new domains requires techniquesto inform our algorithms how best to adapt. This pa-per extended...

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