Báo cáo khoa học: A simple protocol to study blue copper proteins by NMR pot

... for peak 10. All thenew assignments are summarized in Table 4. A simple NMR protocol is an important tool to study paramagnetic proteins Plastocyanin is a good model system to address features ... in NMR spectroscopy tail-ored to the structural characterization of copper( II) proteins may play a signiﬁcant role.In paramagnetic metalloproteins, NMR signals of pro-tons close to the metal ... will demonstrate that an approachwhich does not require any hardware or software dedicated to paramagnetic systems can substantially improve theavailable assignments close to the copper (II)...

Báo cáo khoa học: "A Simple Measure to Assess Non-response" docx

... hypotheses can be automatically generated by combining the question with the candidate answer(Pe˜nas et al., 200 8a) . Thus, validation was seen as a binary classiﬁcation problem whose evaluation ... (C ∩ A) + P(C ∩ A) == P (C ∩ A) + P(C/ A) ∗P( A) (3)P (C ∩ A) can be estimated by nac/n, P ( A) can be estimated by nu/n, and we have to estimateP (C/ A) . Our hypothesis is saying that ... results show that their sensitivity valuesare similar, and higher than the value for accuracy.4.4 Qualitative evaluationIn addition to the theoretical study, we undertook a study to interpret...

Báo cáo khoa học: "A SIMPLE BUT USEFUL APPROACH TO CONJUNCT IDENTIFICATION" docx

... reference manuals. The largest manual available to the project in machine-readable form is the Merck Veterinary Manual, which serves as the primary testbed. The system semi-automatically builds and ... [ [A and B] in dogs] and [A and [B in dogs]], where A and B are typically large structures themselves, A and B should be conjoined, and 'in dogs' may appropriately be attached to ... al., 1982] (e.g. "fly and mosquito repellants" could refer to 'fly' and 'mosquito repellants' or to 'fly repellants' and 'mosquito repcllants'),...

Tài liệu Báo cáo khoa học: "A Composite Kernel to Extract Relations between Entities with both Flat and Structured Features" ppt

... data. Both corpora are parsed using Charniak’s parser (Charniak, 2001). We iterate over all pairs of entity mentions occurring in the same sen-tence to generate potential relation instances. ... parsing, template extraction and relation extraction using a generative model. Feature-based methods (Kambhatla, 2004; Zhou et al., 2005; Zhao and Grishman, 20052) for this task employ a ... from relation characterization. This may be due to data imbalance and sparseness issues since we find that the negative samples are 8 times more than the positive samples in the training set....

Tài liệu Báo cáo khoa học: "A Practical Solution to the Problem of Automatic Word Sense Induction" doc

... rather simple task. We decided to use the hierarchical clustering algorithm readily available in the MATLAB (MATrix LABoratory) programming language. After some testing with various similarity ... of matrix sparse-ness can be minimized by reducing the dimension-ality of the matrix. An appropriate algebraic method that has the capability to reduce the dimen-sionality of a rectangular ... A Practical Solution to the Problem of Automatic Word Sense Induction Reinhard Rapp University of Mainz, FASK D-76711 Germersheim, Germany rapp@mail.fask.uni-mainz.de Abstract Recent...

Tài liệu Báo cáo khoa học: "A Bootstrapping Approach to Named Entity Classification Using Successive Learners" pdf

... unlimited raw corpus compensates for the modest recall. As a result, large quantities of NE instances are automatically acquired. An automatically annotated NE corpus can then be constructed by extracting ... parsing-based NE rules are learned with high precision but limited recall. Then, these rules are applied to a large raw corpus to automatically generate a tagged corpus. Finally, an HMM-based ... containsDigitAndAlpha, containsDigitAndDash, containsDigitAndSlash, containsDigitAndComma, containsDigitAndPeriod, otherNum, allCaps, capPeriod, initCap, lowerCase, other. 6 Benchmarking and...

Tài liệu Báo cáo khoa học: "A Prototype Text to British Sign Language (BSL) Translation System" ppt

... A Prototype Text to British Sign Language (BSL) Translation SystemIan Marshall,´Eva S´af´arSchool of Information SystemsUniversity of East Angliaim@sys.uea.ac.uk, es@sys.uea.ac.ukAbstractWe ... humans (avatars) for present-ing signing has been investigated (Kennaway, 2001).Semi-automatic translation system from individualEnglish sentences to such a sign language gesturenotation has been ... demon-strable on a conventional PC laptop com-puter.1 IntroductionDuring the last half century sign languages havebeen recognized as genuine languages. Thus signlanguages are now accepted as minority...

Tài liệu Báo cáo khoa học: "A PRAGMATICBASED APPROACH TO UNDERSTANDING" pdf

... underlying a speaker's utterance. Allen views the speaker's utterance as part of a plan which the speaker has constructed and is executlug to accomplish his overall task-related goals. To ... Obtaln-Informatlon on the discourse stack activates the rule DG-Obtaln-In/'o. Pl an- analy sl s is activated to associate the elliptical fragment with an aspect of I$'s task- related ... has been partially supported by a grant from the National 3cAence Foundation, XST- 8311~00, and a subeontraot from Bolt Beranek and Newmm'l Inc. of a grant flwm the Nationa~ ScAence...

Tài liệu Báo cáo khoa học: "A HYBRID APPROACH TO REPRESENTATION IN THE JANUS NATURAL LANGUAGE PROCESSOR" pot

... follow Cad.son's analysis [10] of the semantics of bare plurals. THE, as an operator, takes three arguments: a variable, a sort (unary predicate), and a proposition. Its denotation is ... B. A Logical-form and Knowledge-base Design for Natural Language Generation. Proceedings AAAI-86 Fifth National Con- ference on Artificial Intelligence, The American As- sociation for Artificial ... Natural Lan- guage Interface. Notebook of Speech and Natural Language Workshop, 1989. To be reprinted by Mor- gan Kaufmann Publishers. 202 A HYBRID APPROACH TO REPRESENTATION IN THE JANUS NATURAL...

Tài liệu Báo cáo khoa học: "A PROBABILISTIC APPROACH TO GRAMMATICAL ANALYSIS OF WRITTEN ENGLISH BY COMPUTER" pot

... that, for instance, in fact is labelled as a prepositio'~aT-~rase rather than as an adverbial phrase. No attempt is made to show any paraphrase relationships. Putative deleted or transposed ... T-tag assiEnment against the same samples contained in the tree bank, rules have been incorporated into T-tag assignment to insert additional T-tag data after look up but before probability ... more potential tags and, where appropriate, probability markers, are assigned to each input word by a look up procedure that matches the input form against a list of full word forms, or, by...

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