Báo cáo khoa học: "Efficient Inference of CRFs for Large-Scale Natural Language Data" docx
Báo cáo khoa học: "Efficient Inference of CRFs for Large-Scale Natural Language Data" docx
... Proceedings of the ACL-IJCNLP 2009 Conference Short Papers, pages 281–284,Suntec, Singapore, 4 August 2009.c2009 ACL and AFNLPEfficient Inference of CRFs for Large-Scale Natural Language DataMinwoo ... setting of parameters. We alsopresent a simple but robust variant algorithm in which CRFs efficiently learn and predict large-scale natural language data.2 Linear-chain CRFs Many versions of CRFs ... data. Inference is significantly challenging both in learn-ing and decoding CRFs. Time complexity is O(T |Y|2) for exact inference (i.e., forward-backward and Viterbialgorithm) of linear-chain CRFs...
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Báo cáo khoa học: "Efficient Inference Through Cascades of Weighted Tree Transducers" ppt
... beenlittle description of inference algorithms for these automata beyond formal founda-tions. We give a detailed description of algorithms for application of cascades of weighted tree transducers ... weight of a path is calculated as theproduct of the weights of its edges, and that the weight of a(not necessarily finite) set T of paths is calculated as the sum of the weights of the paths of ... function of therules. As for WRTGs, we refer to R as a finiteset of weighted rules, each rule r of the formq.yπ(r)−−→ u.A WXTT is linear (respectively, nondeleting)if, for each rule r of the form...
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Tài liệu Báo cáo khoa học: Efficient killing of SW480 colon carcinoma cells by a signal transducer and activator of transcription (STAT) 3 hairpin decoy oligodeoxynucleotide – interference with interferon-c-STAT1-mediated killing pdf
... 24 and 48 h of culture using trypan blue staining. (C) Cells weretreated with 0.5, 1 and 2 lg of hpST3dODN and 1 and 2 lg of control ODN for 6 h or with lipids only; after 48 h of culture, they ... (1988) Induction of indoleamine 2,3-dioxygenase: a mechanism of the anti-tumor activity of interferon gamma. Proc Natl Acad SciUSA 85, 1242–1246.41 Stephanou A (2004) Role of STAT-1 & STAT-3 ... be a good target for the induction of cell death. Several therapeutic approaches have beendeveloped to inhibit STAT3, including inhibition of itsexpression [14,15], inhibition of its dimerization...
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Báo cáo khoa học: Efficient inhibition of b-secretase gene expression in HEK293 cells by tRNAVal-driven and CTE-helicase associated hammerhead ribozymes doc
... moleculartools for the inhibition of the biosynthesis of b-secretase and for the exclusion of the formation of toxic b-amyloidpeptides in HEK293 cells.Materials and methodsConstruction of plasmids for ... level of extra- and intracellular release of b-amyloid peptide, which is a product of the catalyticactivity of the target protein. Our efforts to use Western blotanalysis for detection of the ... ribozymes useful molecular tools for very selectivedegradation of mRNA and inhibition of expression of thegenes of ÔunwantedÕ proteins. The successful selection of hammerhead ribozymes, active...
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Báo cáo khoa học: Efficient synthesis of a disulfide-containing protein through a batch cell-free system from wheat germ pdf
... eluted (14–22) with 360 lLof4%(w/v)SDS (for analysis) or 0.1Mglycine/HCl, pH 2.3 (for purifica-tion). The amount of polypeptide in each 40 lLfractionandthe ratio of the antigen-binding fraction ... synthesized into its active form. Before the start of translation, the reducing agent dithiothreitol, whichnormally is added to the wheat germ extract but whichinhibits disulfide formation during translation, ... measurements for detection of antigens were also possible with the use of this immobi-lized surface.Keywords: cell-free synthesis; scFv; disulfide; wheat germ;biotinylation.As a consequence of the...
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Báo cáo khoa học: "Efficient Path Counting Transducers for Minimum Bayes-Risk Decoding of Statistical Machine Translation Lattices" pptx
... n-gram sequences of order n. Φnhas asimilar form to the WFST implementation of an n-gram language model (Allauzen et al., 2003). Φnincludes for each n-gram u = wn1arcs of the form:wn-11wn2wn:uThe ... newswire data and+0.5 BLEU for newsgroup data (row LMBR).The other rows of Table 1 show the performance of LMBR decoding using the hybrid decision rule of Equation (5) for 0 ≤ k ≤ 3. When the condi-tional ... useful in place of the original Tromble etal. (2008) approximation.In the following sections, we present an efficientmethod for simultaneous calculation of p(u|E) for n-grams of a fixed order....
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Báo cáo khoa học: "Efficient Tree-based Approximation for Entailment Graph Learning" doc
... IntroductionPerforming textual inference is in the heart of manysemantic inference applications such as QuestionAnswering (QA) and Information Extraction (IE). Aprominent generic paradigm for textual inference ... F1on the curve is .43 for Exact-graph, .41 for TNF, and .34 for No-trans. AUC in the recall range 0-0.5is .32 for Exact-graph, .31 for TNF, and .26 for No-trans.Run-time of LP-relax is also bad ... graphs of rathermoderate size and that the coverage of their methodis limited. Thus, scaling their algorithm to data setswith tens of thousands of predicates (e.g., the extrac-tions of Fader...
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Báo cáo khoa học: "Efficient Multi-pass Decoding for Synchronous Context Free Grammars" pdf
... do for speech recognition.Second, we explore heuristics for agenda-basedsearch, and present a heuristic for our second passthat combines precomputed language model infor-mation with information ... is the set of candidate target language words outside the span of (i, j). hBBis the prod-uct of the upper bounds for the two on-the-bordern-grams.This heuristic function was one of the admissibleheuristics ... translation references for eachsentence. There are a total of 371 Chinese sentences of no more than 20 words in the data set. Thesesentences are the test set for our different versions of language- model-integrated...
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Báo cáo khoa học: "Building a Large Knowledge Base for a Natural Language System" doc
... Knowledge Base for a Natural Language System Jerry R. Hobbs Artificial Intelligence Center SRI International and Center for the Study of Language and Information Stanford University ... interpretation of natural language discourse can require arbitrarily detailed world knowledge and that a sophisticated natural language sys- tem must have a large knowledge base. But heretofore, the ... there are dozens of facts one could state involving any one of these predicates, we were faced with the problem of determining those facts that would be most pertinent for natural language understanding...
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Tài liệu Báo cáo khoa học: Efficient RNA ligation by reverse-joined hairpin ribozymes and engineering of twin ribozymes consisting of conventional and reverse-joined hairpin ribozyme units ppt
... rate by only a factor of two [29]. Therefore,as well as to confine the conformational freedom of the ribozyme structure, we initially used an A6-linker for the design of reverse-joined hairpin ... reaction, the oxygen atom of the free 5¢-OHgroup of one RNA fragment attacks the phosphorous of the cyclic 2¢,3¢-phosphate group of another, result-ing in ligation of the two fragments. In contrast ... 7.5) buffer, hea-ted at 90 °C for 1 min and incubated at 37 °C for 15 min.Reactions were started by addition of MgCl2and spermine,portions of which were placed before on the Eppendorftube wall...
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