Ngày tải lên: 14/08/2014, 13:21
Tài liệu Báo cáo khoa học: Mg2+-modulated KMnO4 reactivity of thymines in the open transcription complex reflects variation in the negative electrostatic potential along the separated DNA strands ppt
... T ozinski and K L Wierzchowski Open complex at kPR promoter open complex (RPo) capable of specic binding of NTP substrates and synthesis of nascent ... partially opened subpopulation of RPo, called RPo1, some conformational transition leading to an extension of the melted DNA region from the center outwards and to the formation of the fully open ... complexes RPokPR, shadowed columns; RPoPa [30], open columns: in the absence of added MgCl2 (A), in the presence of 10 mM MgCl2 (B), and the Mg effect (C) 2847 Open complex at kPR promoter in the promoter...
Ngày tải lên: 19/02/2014, 18:20
Tài liệu Báo cáo khoa học: "An Open Source Toolkit for Phrase-based and Syntax-based Machine Translation" docx
... the translation process Actually NiuTrans is not the first system of this kind To date, several open- source SMT systems (based on either phrasebased models or syntax-based models) have been developed, ... more than threads not help in our experiments Conclusion and Future Work We have presented a new open- source toolkit for phrase-based and syntax-based machine translation It is implemented in C++ ... Moran, Richard Zens, Chris Dyer, Ondej Bojar, Alexandra Constantin, and Evan Herbst 2007 Moses: Open Source Toolkit for Statistical Machine Translation In Proc of ACL 2007, pages 177–180 Zhifei...
Ngày tải lên: 19/02/2014, 20:20
Tài liệu Báo cáo khoa học: "Using Multiple Sources to Construct a Sentiment Sensitive Thesaurus for Cross-Domain Sentiment Classification" doc
... experiments, we select each domain in turn as the target domain, with one or more other domains as sources Note that when we combine more than one source domain we limit the total number of source ... these values for the remainder of the experiments described in the paper 5.3 Combining Multiple Sources Figure shows the effect of combining multiple source domains to build a sentiment classifier ... Information Systems, 23(3):321–344 Hui Fang 2008 A re-examination of query expansion using lexical resources In ACL 2008, pages 139–147 Z Harris 1954 Distributional structure Word, 10:146– 162 Vasileios...
Ngày tải lên: 20/02/2014, 04:20
Tài liệu Báo cáo khoa học: "Learning Sub-Word Units for Open Vocabulary Speech Recognition" doc
... word as a finite state machine We use OpenFst’s RandGen operation with a costumed arc(FSM) (Figure 3), where arcs weights arise from selector (http://www.openfst.org/) 715 AA_N_JH_AA_N N_JH_AA_N_IY ... our objective is to produce a lexicon of sub-word units that can be used by a hybrid system for open vocabulary speech recognition Rather than relying on the text alone, we also utilize side information: ... marked in OOVCORP were excluded The language model was trained on 400M words from various text sources The IBM system used speaker adaptive training based on maximum likelihood with no discriminative...
Ngày tải lên: 20/02/2014, 04:20
Tài liệu Báo cáo khoa học: Open questions in ferredoxin-NADP+ reductase catalytic mechanism ppt
... NAD(H) oxidoreductase In contrast, the site of electron donation from reduced avin appears to be open to a remarkable variety of adventitious oxidants of very dierent structure and properties The ... reconciled with the available structural-functional data The aim of this article is to review these open questions in FNR biochemistry, as a tool and conceptual framework for future research It is ... Binding and kinetic parameters were averaged from experiments carried out at I Ê 100 mM (Original sources cited in the text.) When dispersion among reported values exceeded 50%, the interval between...
Ngày tải lên: 20/02/2014, 11:20
Tài liệu Báo cáo khoa học: "Poliqarp An open source corpus indexer and search engine with syntactic extensions" docx
... the sources of a relatively stable beta-stage version References Florbela Barreto, António Branco, Eduardo Ferreira, Amália Mendes, Maria Fernanda Nascimento, Filipe Nunes, and João Silva 2006 Open ... João Silva 2006 Open resources and 88 tools for the shallow processing of Portuguese: The TagShare project In Proceedings of the Fifth International Conference on Language Resources and Evaluation ... Romary 2000 XCES: An XML-based standard for linguistic corpora In Proceedings of the Linguistic Resources and Evaluation Conference, pages 825–830, Athens, Greece Daniel Janus and Adam Przepiórkowski...
Ngày tải lên: 20/02/2014, 12:20
Báo cáo khoa học: Human recombinant prolidase from eukaryotic and prokaryotic sources Expression, purification, characterization and long-term stability studies pptx
... Results Recombinant human prolidase expression and purification from eukaryotic and prokaryotic sources Total cellular RNA from cultured normal human fibroblasts was reverse-transcribed, and prolidase ... the endogenous prolidase present in cellular fibroblast lysates The recombinant enzymes from both sources were obtained as fusion proteins with an N-terminal poly His tag, which allowed a one-step ... on the enzyme sequences, and to the molecular mass reported for human prolidase from different sources [33–35] The amount of recombinant enzyme obtained from CHO cells was not quantifiable at...
Ngày tải lên: 07/03/2014, 11:20
Báo cáo khoa học: "The OpenGrm open-source finite-state grammar software libraries" ppt
... files (with the extension grm) into FST archive files (with the extension far) FST archives are an OpenFst storage format for a series of one or more FSTs The FST archive and the original source ... are provided that operate on FSTs and perform most of the operations that are available in the OpenFst library These include: closure, concatenation, difference, composition and union In most ... RmEpsilon, Minimize, Optimize, Invert, Project and Reverse Most of these call the obvious underlying OpenFst function One function in particular, CDRewrite is worth further discussion This function...
Ngày tải lên: 07/03/2014, 18:20
Báo cáo khoa học: "A Modular Open-Source System for Recognizing Textual Entailment" pot
... their novel research components into an existing open- source system Such research efforts might include developing knowledge resources, developing inference components for specific phenomena ... acquired knowledge resources, including lexical, lexical-syntactic and syntactic rewrite rules Furthermore, the system components, including preprocessing utilities, knowledge resources, and even ... Constantin, and Evan Herbst 2007 Moses: Open source toolkit for statistical machine translation In Proceedings of ACL Milen Kouylekov and Matteo Negri 2010 An opensource package for recognizing textual...
Ngày tải lên: 07/03/2014, 18:20
Báo cáo khoa học: "An Open-License Broad Coverage Lexicon" doc
... several open- source resources and a crowd-sourced website Like these resources it too is open- license We’ve demonstrated that its performance is on par with existing state of the art resources ... These two resources have already been mapped, which facilitated applying subcategorization frames to WordNet verbs Furthermore, WordNet has existing links to OpenCyc OpenCyc is an open- source ... partnered with the EANLU parser and McFate’s (2010) OpenCyc verb frames, the result is a semantic parser that uses completely open- license resources It is our hope that NU-LEX will provide a powerful...
Ngày tải lên: 07/03/2014, 22:20
Báo cáo khoa học: "Weakly-Supervised Acquisition of Open-Domain Classes and Class Attributes from Web Documents and Query Logs" pot
... equine encephalitis, } (2) Open domain class attributes amino acids: [titration curve, molecular formula, isoelectric point, density, (2) extinction coefficient, pi, food sources, molecular weight, ... Web documents and search query logs, to extract opendomain knowledge that is expected to be suitable for later use In contrast, the textual data sources used in previous studies in large-scale ... from Documents and Queries 2.1 Open- Domain Labeled Classes of Instances Figure provides an overview of how Web documents and queries are used together to acquire opendomain, labeled classes of...
Ngày tải lên: 08/03/2014, 01:20
Báo cáo khoa học: "The Tradeoffs Between Open and Traditional Relation Extraction" potx
... OCA TION ) In Open IE, the relations are not known in advance, and neither are their argument types The unique nature of the open extraction task has led us to develop O- CRF, an open extraction ... instances of the given relation found in the corpus In the open extraction task, relation names are not known in advance The sole input to an Open IE system is a corpus, along with a small set of ... an Open IE system has to locate both the set of entities believed to participate in a relation, and the salient textual cues that indicate the relation among them Knowledge extracted by an open...
Ngày tải lên: 08/03/2014, 01:20
Báo cáo khoa học: "Methods for Using Textual Entailment in Open-Domain Question Answering" doc
... Textual Entailment in Q/A lows Section describes the three methods of using textual entailment in open- domain question answering that we have identified, while Section presents the textual entailment ... our findings, and Section summarizes our conclusions techniques As illustrated in Figure 1, most open- domain Q/A systems generally consist of a sequence of three modules: (1) a question processing ... different methods for integrating a textual entailment (TE) system into the architecture of an open- domain Q/A system Work on the semantics of questions (Groenendijk, 1999; Lewis, 1988) has argued...
Ngày tải lên: 08/03/2014, 02:21
Báo cáo khoa học: "Vocabulary Decomposition for Estonian Open Vocabulary Speech Recognition" ppt
... available for most languages, they must be tailored by linguists for new datasets, and it is an open problem as to how pronunciation dictionaries should be written for grammatical morphs in languages ... the models (LER %) Discussion Four different approaches to lexical item selection for large and open vocabulary ASR in Estonian were evaluated It was shown that the three approaches utilizing ... as well 5.2 Comparison to previous results There are few previous results published on Estonian open vocabulary ASR In (Alumäe, 2006) a WER of 44.5% was obtained with word-based trigrams and a...
Ngày tải lên: 08/03/2014, 02:21
Báo cáo khoa học: "A speech interface for open-domain question-answering" doc
... system, a predictive interface for typing or correcting naturallanguage questions, and a Web-based open- domain question-answering engine We describe these in turn 3.1 Speech recognizer The dictation...
Ngày tải lên: 08/03/2014, 04:22
Báo cáo khoa học: "The Role of Lexico-Semantic Feedback in Open-Domain Textual Question-Answering" ppt
Ngày tải lên: 08/03/2014, 05:20
Báo cáo Y học: Characterization of the exopolysaccharide produced by Streptococcus thermophilus 8S containing an open chain nononic acid doc
Ngày tải lên: 08/03/2014, 09:20
Báo cáo " Effects of using wastewater as nutrient sources on soil chemical properties in peri‐urban agricultural systems " ppt
Ngày tải lên: 14/03/2014, 15:20