Báo cáo khoa học: "Efﬁcient Unsupervised Discovery of Word Categories Using Symmetric Patterns and High Frequency Words" ppt

... 2006.c2006 Association for Computational LinguisticsEfﬁcient Unsupervised Discovery of Word Categories Using Symmetric Patterns and High Frequency WordsDmitry DavidovICNCThe Hebrew UniversityJerusalem ... candidates are discovered us-ing meta -patterns of high frequency and contentwords, and symmetric patterns are discovered us-ing simple graph-theoretic measures. Categories are generated using ... induction of lexical re-lationships. We do this in a fully unsuper-vised manner, using meta -patterns comprised of high frequency words and content words.2. Identiﬁcation of pattern candidates...

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

... after 16, 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, ... activated forms of STAT3 and STAT1. Theactions of STAT3 and STAT1 are highly entangled,they also have antagonistic activities, and they regulateeach others activity. Thus, the inhibition of bothfactors ... with IFN-c induces cell death of SW480 cells.(A) SW480 cells were incubated in the absence of IFN-c or with10, 100 and 200 ngÆmL)1for 4, 24 and 48 h of incubation and cell death was measured...

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

... structure of the reverse-joined ribozyme unit fortwin ribozyme design consists of two domains joinedby a single-stranded linker of eight adenosine residues and binds the 3¢-terminal part of its ... Addition of the fragment S20 cp led to the for-mation of new products detected as three additionalbands (lanes 3 and 4). These signals correspond to the29- and 35-mer resulting from ligation of ... cp(Cy5)control. Lanes 2 and 3, incubation of S20 cp(Cy5) with HP–TWRJ in the absence of initial substrate under conditions of fragment exchangereaction after 5 and 80 min. Lane 4, incubation of S20 cp(Cy5)...

Tài liệu Báo cáo khoa học: "Efﬁcient Online Locality Sensitive Hashing via Reservoir Counting" ppt

... 2: Results of simulating many iterations of U,for k = 255, and various values of s and u.Algorithm 1 RESERVOIRUPDATE(n, k, m, σ, s)Parameters:n : size of stream so fark : size of reservoir, ... e.g.: ﬁve updates of 1, or three updates of -1, using a single estimate.Consider a situation in which we have a reservoir of size k with some current value of s, 0 ≤ s ≤ k, and we wish to perform ... have a reservoir of size 5, containingthree values of −1, and two values of 1, then the exchangeabil-ity of the elements means the reservoir is fully characterized byknowing k, and that there...

Báo cáo khoa học: Efﬁcient and targeted delivery of siRNA in vivo pdf

... 4827MINIREVIEWEfﬁcient and targeted delivery of siRNA in vivoMin Suk Shim1 and Young Jik Kwon1,2,31 Department of Chemical Engineering and Materials Science, University of California, Irvine, ... with a strand of siRNA, and the other siRNA strand was subsequentlyannealed to the aptamer-conjugated strand. Theseaptamer–siRNA conjugates were able to access HIV-infected cells and silence ... and offer high structural and functional tunability. An ideally designednonviral siRNA carrier with its desirable structural and functional multicomponents is depicted in Fig. 2.Liposomes and...

Báo cáo khoa học: "Efﬁcient Third-order Dependency Parsers" pdf

... siblinggrandchildtri-siblinggrand-siblingSpeciﬁcally, Sections 4.1, 4.2, and 4.3 describeparsers that, respectively, factor trees into grand-child parts, grand-sibling parts, and a mixture of grand-sibling ... twointerrelated types of dynamic-programming struc-tures: complete spans, which consist of a head- word and its descendents on one side, and incom-plete spans, which consist of a dependency and theregion ... integration of labels into Models 1 and 2 would result in third-order parts composed of three labeled dependencies, at the cost of in-creasing the time and space complexities by fac-tors of O(L3) and...

Báo cáo khoa học: "Efﬁcient Staggered Decoding for Sequence Labeling" pptx

... (Tsuruoka and Tsujii,2005; Sha and Pereira, 2003; Ninomiya et al.,2006). In POS tagging, we used unigrams of thecurrent and its neighboring words, word bigrams,preﬁxes and sufﬁxes of the current word, ... then-th column such that yn∈ I(zn), and we can useλ(zn) and ¯λ(zn) instead of λ(yn) and ¯λ(yn).We compute λ(yn) and ¯λ(yn) by using theforward and backward Viterbi algorithm, respec-tively. ... theoretical analysis of staggereddecoding. In the following proofs, L, V , and Nrepresent the number of original labels, the num-ber of distinct tokens, and the length of input tokensequence,...

Báo cáo khoa học: "Efﬁcient, Feature-based, Conditional Random Field Parsing" potx

... is a conditional random ﬁeld based model.For a rule application, we allow arbitrary featuresto be deﬁned over the rule categories, span and splitpoint indices, and the words of the sentence. ... likelihood of the parse tree, given the sentence, not joint like-lihood of the tree and sentence; and (b) probabil-ities are normalized globally instead of locally –the graphical models depiction of ... consists of (Manning and Sch¨utze, 1999): (i) a set of termi-nals {wk},k = 1, ,V; (ii) a set of nonterminals{Nk},k = 1, ,n; (iii) a designated start symbolROOT; and (iv) a set of rules,...

Báo cáo khoa học: Efﬁcient inhibition of b-secretase gene expression in HEK293 cells by tRNAVal-driven and CTE-helicase associated hammerhead ribozymes doc

... 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 ribozyme ... decomposition of the RNA.Determination of the level of BACE mRNA and ribozyme RNA expression in mammalian cellsThe level of BACE mRNA and ribozyme RNA wasmonitored by RT/PCR using a OneStep ... thecleavage of phosphodiester bonds in RNA. This abilitymakes ribozymes useful molecular tools for very selectivedegradation of mRNA and inhibition of expression of thegenes of ÔunwantedÕ...

Báo cáo khoa học: "Efﬁcient Parsing with Linear Context-Free Rewriting Systems" pdf

... fan-out and complexity of grammars read off from the treebank. This newheuristic provides a signiﬁcant improvement: in-stead of a fan-out of 9 and a parsing complexity of 19, we obtain values of ... until now, the length of sentences neededto be restricted. In the case of Kallmeyer and Maier (2010) and Evang and Kallmeyer (2011) thelimit was 25 words. Maier (2010) and van Cranen-burgh ... Rewriting SystemsAndreas van CranenburghHuygens ING & ILLC, University of AmsterdamRoyal Netherlands Academy of Arts and SciencesPostbus 90754, 2509 LT The Hague, the Netherlandsandreas.van.cranenburgh@huygens.knaw.nlAbstractPrevious...

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