Tài liệu Báo cáo khoa học: "AN EXTENDED LR PARSING ALGORITHM FOR GRAMMARS USING FEATURE-BASED SYNTACTIC CATEGORIES " pot

... AN EXTENDED LR PARSING ALGORITHM FOR GRAMMARS USING FEATURE-BASED SYNTACTIC CATEGORIES Tsuneko Nakazawa Beckman Institute for Advanced Science and Technology ... tsuneko@grice.cogsci.uiuc.edu ABSTRACT This paper proposes an LR parsing algorithm modified for grammars with feature-based categories. The proposed algorithm does not instantiate categories during preprocessing of ... to incorporate feature-based categories into Tomita's extended LR parsing algorithm (Tomita 1986). A straightforwmd adaptation of feature- based categories into the algorithm introduces...

Tài liệu Báo cáo khoa học: "An Improved Redundancy Elimination Algorithm for Underspeciﬁed Representations" pdf

... elimination algorithm: REDUNDANCY-ELIMINATION(Ch, R)1 for each split S in Ch2 do if S is eliminable with respect to R3 then remove S from ChProp. 3 shows that the algorithm is a correct algorithm for ... reduc-tion factor for an individual USR is 666.240.We also measured the ratio of USRs for whichthe algorithm achieves complete reduction (Fig. 6):The algorithm is complete for 56 % of the USRsin ... by checking each split for eliminability before it is added to the chart.We compare the performance of this algorithm tothe baseline of computing the complete chart. For comparison, we have...

Tài liệu Báo cáo khoa học: "An alternative LR algorithm for TAGs" docx

... alternative LR algorithm for TAGs Mark-Jan Nederhof DFKI Stuhlsatzenhausweg 3 D-66123 Saarbr/icken, Germany E-marl: nederhof@dfki.de Abstract We present a new LR algorithm for tree- adjoining grammars. ... alternative to an existing algorithm that is shown to be incorrect. Furthermore, the new algorithm is much sim- pler, being very close to traditional LR parsing for context-free grammars. The construction ... general context-free grammar parsing. The best-known example is generalized LR parsing (Tomita, 1986). A first attempt to adapt LR parsing to tree- adjoining grammars (TAGs) was made by Scha-...

Tài liệu Báo cáo khoa học: "Lexicalized Stochastic Modeling of Constraint-Based Grammars using Log-Linear Measures and EM Training" ppt

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Tài liệu Báo cáo khoa học: "A Best-First Search Algorithm for Generating Referring Expressions" pot

... A Best-First Search Algorithm for Generating Referring ExpressionsHelmut HoracekUniyersitat des Saarlandes, FR 6.2 InformatikPostfach 151150, D-66041 Saarbdicken, ... distinguishedfrom potential distractors (McDonald 1981), thecontrast set, which entails all elements of thecontext set except the intended referent(s).Several algorithms have been developed for this ... incremental algorithm can choosefrom many alternatives for disjunctions of twoattributes. Gardent gives big v cow, Holstein vvJersey v -'medium as an intermediateresult, potentially...

Tài liệu Báo cáo khoa học: An alternative isomerohydrolase in the retinal Muller cells of a cone-dominant species doc

... hexamer. PCR was per-formed with PCR master mix (Roche, Indianapolis, IN,USA) at 94 °C for 5 min followed by 35 cycles of 94 °C for 30 s, 48 °C for 30 s and 72 °C for 30 s using a set of degener-A ... broken line arrows), andRT-PCR was performed with Taq DNA polymerase(Roche) at 94 °C for 5 min followed by 35 cycles of 94 °C for 30 s, 58 °C for 30 s and 72 °C for 30 s. The sizes of thePCR products ... RPE65c-Rev; con-taining a HindIII site) (Table 1) at 94 °C for 5 min fol-lowed by 35 cycles of 94 °C for 1 min, 58 °C for 1 min and72 °C for 2 min. After agarose gel electrophoresis, the PCRproduct...

Tài liệu Báo cáo khoa học: An anthrax lethal factor mutant that is defective at causing pyroptosis retains proapoptotic activity pdf

... 10)8m LF for 4 h or 24 h.The cells were resuspended in medium, stained with trypanblue, and counted using a hemocytometer.Nlrp1b reconstitution assayThe Nlrp1b reconstitution assay was performed ... assay using this melanoma cell line. PA and either wild-typeor mutant LF were incubated with MALME-3M cells for 72 h, and viability was estimated using the MTSassay (Fig. 5A) [20]. The EC50 for ... either wild-type (WT) LF or LF-K518E ⁄ E682G for 1 h, and then treated with lipopolysaccharide for 15 min. Cellu-lar lysates were made and probed for phosphorylated MAPKs or a-tubulin control...

Tài liệu Báo cáo khoa học: An autoinhibitory effect of the homothorax domain of Meis2 ppt

... HTHfunctions could be performed by both isoforms,although for antenna development only full-lengthHTH was sufﬁcient. It may therefore be that Meis2e-like proteins are functional for some activities, ... represents anaturally occurring dominant negative form of Meis2that might be able to interfere by competing with otherMeis isoforms for binding to Pbx1, for example. Ourattempts to test this possibility ... USA). For quantitative RT-PCR,cDNA was generated using Superscript III (Invitrogen), andanalyzed by PCR using a DNA engine cycler and PromegaTaq. Intron-spanning primer pairs were selected using...

Tài liệu Báo cáo khoa học: An allosteric DNAzyme with dual RNA-cleaving and DNA-cleaving activities doc

... of catalytic activity by aconformational transition. We prepared a DNA-cleav-ing DNAzyme, using a deoxyribonucleotide residuegrafting strategy, as a model system for designing abifunctional ... was incu-bated at 37 °C for 1 h.Prior to the self-cleavage activity assays, the DNAzymewas ﬁrst denatured by heating to 90 °C for 2 min, and thenincubated at 0 °C for 5 min. Trace amounts ... nm) of RS (as a ‘negative’ effector) at 23 °C. For ‘positive’ regulation assays, reactions were con-ducted at 23 °C for a designated period of time, using 1 nm5¢-32P-labeled DNAzyme, 100 nm...

Tài liệu Báo cáo khoa học: Biosynthesis of riboﬂavin Screening for an improved GTP cyclohydrolase II mutant pdf

... calculated using an absorption coefﬁcient of7.43 mm)1Æcm)1 for 2,5-diamino-6-ribosylamino-4(3H)-pyri-midinone 5¢-phosphate .Stopped-ﬂow kinetic experimentsExperiments were performed using an ... error-prone PCR was performed [ (using the oligonucleotides ribA3S and ribA4AS (Table 4) asprimers] only on the DNA fragment coding for the cyclo-hydrolase II domain. Reaction mixtures for error-pronePCR ... variation for both proteins.The wild-type and mutant proteins showed similarprogression curves for the differentials at 310, 295 and254 nm, suggesting that the two proteins under com-parison perform...

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