Báo cáo khoa học: "Dynamic compilation of weighted context-free grammars" pot

... input weighted transducers r(G) and the weighted automata in the compilation output. We did several experiments that show the ef- ficiency of our compilation method. A key fea- ture of our ... of grammar compilation. Grammar compilation takes as input a weighted CFG repre- sented as a weighted transducer (Salomaa and Soittola, 1978), which may have been opti- mized prior to compilation ... re- definition of the set A in successive uses of the grammar. Dynamic substitution Let a be a weighted rational transduction of ~* to A* x R, ~ C_ A, that is a regular weighted substitution...

Báo cáo khoa học: "Automatic Compilation of Travel Information from Automatically Identified Travel Blogs" doc

... the effectiveness of our method by experiment. For the identification of travel blogs, we obtained scores of 38.1% for Recall and 86.7% for Precision. In the extraction of travel information ... travel information for all tourist spots and to keep them up to date manually. Therefore we have studied the automatic compilation of travel information. For the compilation, we focused on travel ... travel blogs instead of news articles, because bloggers' travel experiences tend to be written in travel blogs. 3 Automatic Compilation of Travel In-formation The task of compiling travel...

Báo cáo khoa học: Dynamic association of MLL1, H3K4 trimethylation with chromatin and Hox gene expression during the cell cycle ppt

... subjected toRT-PCR. RT reactions were performed in a total volume of 25 lL containing 1 lg of total RNA, 2.4 lm of oligo-dT,100 U of MMLV reverse transcriptase (Promega, Madison,WI, USA), 1· ﬁrst ... and therecruitment of MLL1 and H3K4 trimethylation levels are modulated inthe promoter of these Hox genes as a function of their expression. Inaddition, down-regulation of MLL1 results in cell ... Journal compilation ª 2009 FEBS 1629 of homeobox-containing (Hox) genes that are criticalfor cell differentiation and development [13,32,33].Although recent discoveries of HMT activities of MLLs...

Báo cáo khoa học: Dynamic reorganization of the motor domain of myosin subfragment 1 in different nucleotide states docx

... power dependence of f¢ on R, thetemperature profile of f¢ is dominated by the change of the R distribution, even in the case of a slight variation of Æj2æ [18]. Comparison of the temperature ... orders of magnitude greaterthan the volumes of the spheres with a radius of the length of the fluorophores (< 103A˚3), indicating that the motion of the labels reflects the motion of the ... contraction of muscleinvolve the cyclic interaction of actin with myosin. Thebinding and hydrolysis of ATP by the myosin induces aseries of conformational changes within the motor domain of myosin,...

Tài liệu Báo cáo khoa học: "A SNAPSHOT OF KDS A KNOWLEDGE" pot

... gcel-pursuin~ planner, end the use of dynamic models of speaker and hearer to shape the text to the task at hand. STATEMENT OF THE PROBLEM The task of KDS is to generate English text ... vlz: ordering among sentences and the scope of each, quality comparisons between alternative 8~regations of sub-sententJal units, the coordination of communication with non-linguistic activities ... text from a computer representation of knowledge to be delivered. We have addressed a number of Issues not previously encountered In the generation of Natural Language st the multi-sentence...

Báo cáo khoa học: "Strong Lexicalization of Tree Adjoining Grammars" docx

... guessedfor distinct (occurrences of) productions are trans-ported to distinct (occurrences of) terminal produc-tions [cf. Section 3 of (Potthoff and Thomas, 1993)and page 346 of (Hoogeboom and ten Pas, ... macrogrammars of Fischer (1968), which are a notationalvariant of the well-nested linear context-free rewrit-ing systems (LCFRS) of Vijay-Shanker et al. (1987)and the well-nested multiple context-free ... that posA(r) = ∅.Proof. Clearly, every single derivation step of Gρcan be simulated by a derivation of G using poten-tially several steps. Conversely, a derivation of Gcan be simulated...

Báo cáo khoa học: Conformational studies of a hyperthermostable enzyme potx

... experimental data consisted of repeating sequences of measurements of the parallel andperpendicular polarized emission ﬂuorescence decays of thereference compound (three cycles of 20 s), the protein ... theshape of LamA is globular-ellipsoid with calculateddimensions of 4.6 nm · 3.2 nm · 3.4 nm. For the selec-tion of the best model preliminary analysis of the NMRsolution structure of LamA ... of the tertiary structure.In the presence of 8 m GdnHCl the near-UV CD spec-tral proﬁle of LamA showed decreased ellipticity of the bands around 295 and 262 nm and increased ellip-ticity of...

Báo cáo khoa học: "Constructivist Development of Grounded Construction Grammars" ppt

... needed,namely induction, not in the sense of statistical gen-eralisation as in observational learning but in thesense of Peirce (Fann, 1970): A hypothesis arrivedat by making educated guesses ... viewpoint of getting as far as possiblein the interpretation or production process despitemissing rules or incompatibilities in the inventories of speaker and hearer, and from the viewpoint of supporting ... trajectory of a ball falling from a tower,we engage in computational simulations and roboticexperiments that create (new) artiﬁcial phenomenathat have some of the characteristics of natural...

Báo cáo khoa học: "THE INTERPRETATION OF TENSE IN DISCOURSE" potx

... Alaska" does not of itself cause an addition to e/s structure. 12 Rather, application of EDH-2 to the interpretation of clause 5-3 results in the creation of a new node of els structure ... discourse interpretation of tense contributes to the solution of this problem. This work on the discourse interpretation of tense is being carried out in the context of a larger enterprise whose ... abstractions thereof [16], In this paper, I will relate the problem of building up an e/s structure to what has been described as the anaphoric property of tense [7, 11, 6, 1, 12] and of relative...

Báo cáo khoa học: "COMPUTER SIMULATION OF SPONTANEOUS SPEECH PRODUCTION" pot

... are the pitch levels of each sound. The word h~ger sounds American because of the ~, which sounds like the (retroflex) vowels in bird. The pronunciation (execution) of the words is handled ... problem of chunking the utterances in order to get natural prosodic units. The paper proposes a buffer model which allows the accumula- tion and delay of phonetic material until a chunk of the ... errors so common in spontaneous speech. This paper discusses some of the prob- lems in the light of the computer model of verbal production presented £n Sigurd (1982), Fornell (1983). For...

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