Báo cáo khoa học: "A PROLOG IMPLEMENTATION OF LEXICAL LANGUAGE FUNCTIONAL PROCESSING GRAMMAR SYSTEM AS A BASE FOR A NATURAL" pdf

... A PROLOG IMPLEMENTATION OF LEXICAL FUNCTIONAL GRAMMAR AS A BASE FOR A NATURAL LANGUAGE PROCESSING SYSTEM Werner Frey and Uwe Reyle Department of Llngulstlcs University of Stuttgart ... Stuttgart W-Germany O. ABSIRACr ~ne aim of this paper is to present parts of our system [2], which is to construct a database out of a narrative natural la~ text. We think the parts are of interest ... relations. ~-erefore there must he an interaction between the grammatical head and the logical head of a phrase. I. A PROLOG ~W[/94~NTATION OF LFG A main topic in AI research is the interaction...

Báo cáo khoa học: The sulfur atoms of the substrate CoA and the catalytic cysteine are required for a productive mode of substrate binding in bacterial biosynthetic thiolase, a thioester-dependent enzyme doc

... positioning of substrate in the thiolase catalytic pocket. Furthermore, calorimetric assaysindicate that the mutation of Cys89 into an alanine signiﬁcantly decreasesthe afﬁnity of thiolase towards CoA. ... motherliquor, was allowed to continue for 4 days prior to datacollection. This experiment was performed for both a wild-type thiolase crystal and a C8 9A mutant crystal. Analysis of the data collected ... including, for example, thiolases as well as the related 3-ketoacyl-ACP-synthases (KAS) [1], have a reactive cysteine in the active site, playing a key rolein the reaction cycle by accepting the fatty-acyl...

Tài liệu Báo cáo khoa học: "DESIGN AND IMPLEMENTATION OF A LLXICAL DATA BASE " docx

... existence ~f a redundancy rule does not count as independent . Assumimg a strict lexicalist framework a la Jackendoff, we developed a word-based lexical database dubbed relational word-based lexicon ... more and more evident as large natural language processing systems are being developed. For instance, a translation system or any other type of natural language processing program that must ... specifications and the implementation of a particular concept of word-based lexicon to be used for large natural language processing systems such as machine translation systems, and compares it...

Báo cáo khoa học: "An Efficient Implementation of a New POP Model" doc

... Using an Annotated Language Corpus as a Virtual Stochastic Grammar, Proceedings AAAI'93, Washington D.C.Bod, R. 1998. Beyond Grammar: An Experience-Based Theory of Language, Stanford, ... 1992.Development and Evaluation of a Broad-Coverage Probabilistic Grammar of English- Language Computer Manuals. ProceedingsACL'92, Newark, Delaware.Black, E., R. Garside and G. Leech, 1993.Statistically-Driven ... corpus fragments rather than grammar rules,192. the use of arbitrarily large fragmentsrather than restricted onesBoth have gained or are gaining wide usage, andare also becoming relevant for...

Tài liệu Báo cáo khoa học: Direct identiﬁcation of hydrophobins and their processing in Trichoderma using intact-cell MALDI-TOF MS docx

... processing (MKFFTAAALFAAVAIA), C-terminal processing (AVGA) and disulﬁde bond formation, has a mass of 7743 Da.T. longibrachiatumThe main mass peak of T. longibrachiatum of m ⁄ z 7242was assigned ... CA, USA). Mass spectra were acquired in lin-ear delayed extraction mode using an acceleration voltage of 20 kV and a low mass gate of 1500 Da. For desorption of the components, a nitrogen laser ... Calibration was done with the H. jeco-rina HFB1 protein with the 7533 Da calculated averageatomic mass. All masses determined correspond to averageatomic masses.MS analysis of low-molecular-mass peptidesMeasurements...

Tài liệu Báo cáo khoa học: "COMPUTER AIDED INTERPRETATION OF LEXICAL COOCCURRENCES" docx

... COMPUTER AIDED INTERPRETATION OF LEXICAL COOCCURRENCES Paola Velardi (*) Mafia Teresa Pazienza (**) (*)University of Ancona, Istituto di Informatica, via Brecce Bianche, Ancona (**)University of ... representing language expressions on a computer, in a way that can be useful for natural language processing applications, e.g. machine translation, information retrieval, user-friendly interfaces. ... more than a simple analysis of cooccurr~aces, because it attempts an explanation of word associations in terms of conceptual relations between a lexical item and other items or classes. Both...

Báo cáo khoa học: "Distribution-Based Pruning of Backoff Language Models" potx

... applying an SLM, it is usually the casethat more training data will improve a language model. However, as training data sizeincreases, LM size increases, which can lead tomodels that are too large ... Road Haidian District100080, China,kfl@microsoft.comAbstractWe propose a distribution-based pruning of n-gram backoff language models. Instead of the conventional approach of pruningn-grams ... Distribution-Based Pruning of Backoff Language ModelsJianfeng GaoMicrosoft Research ChinaNo. 49 Zhichun Road Haidian District100080, China,jfgao@microsoft.comKai-Fu LeeMicrosoft Research ChinaNo....

Báo cáo khoa học: The structural comparison of the bacterial PepX and human DPP-IV reveals sites for the design of inhibitors of PepX activity pot

... enzyme was obtained after twosteps of HPLC chromatography. The speciﬁc activity meas-ured from this preparation was 1.4 lmol of para-nitroanilidereleased per second and per mg of enzyme; pNA was ... speciﬁc activity andinhibition studiesH-Ala-Pro-para-nitroanilide (Ala-Pro-pNA) was purchasedfrom Sigma (St Louis, MO, USA) and valine-pyrrolidide wassynthesized by Neosystem (Strasbourg, France). ... againstthe X-PDAP of pathogens would probably affect theactivity of the mammalian enzymes, leading to harmfulconsequences for human health. Taking advantage of the structural differences and...

Báo cáo khoa học: "On the Acquisition of Lexical Entries: The Perceptual Origin of Thematic Relations" pptx

... extension of an argument as either an entire object or only part of it. Ani~v~ac~l has the standard semantics of labeling an object as alive or not. Let us illustrate how these operators abstract ... parser, a modification of the Marcus parser ([Marcus 1980]). The domain knowledge specified to the system in this case is a parametric parser and learning system that adapts to a particular ... data. This is just the sort of biasing necessary to account for data on syntactic acquisition. 172 One area of language acquisition that has not been sufficiently addressed within computational...

Báo cáo khoa học: "THE LOGICAL ANALYSIS OF LEXICAL AMBIGUITY" pptx

... terms of logical vocabulary De. This has an impact for natural language question answering systems in which D A is the notions of or- dinary language and D B the logical vocabulary of some ... separate syntactic and semantic analyses. The com- putationally unattractive consequences of this are quite clear: the same work must be done over again for each variant. An alternative class ... potentially ambiguous. Thus semantic interpretation initially assigns to each such lexical item not an ambiguous constant, but a free variable capable of ranging over the appropriate type of a...

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