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Dissertations / Theses on the topic 'Semantics - Data processing'

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1

鄧偉明 and Wai-ming Tang. "Semantics of authentication in workflow security." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B30110828.

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Sax, Matthias J. "Performance Optimizations and Operator Semantics for Streaming Data Flow Programs." Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/21424.

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Unternehmen sammeln mehr Daten als je zuvor und müssen auf diese Informationen zeitnah reagieren. Relationale Datenbanken eignen sich nicht für die latenzfreie Verarbeitung dieser oft unstrukturierten Daten. Um diesen Anforderungen zu begegnen, haben sich in der Datenbankforschung seit dem Anfang der 2000er Jahre zwei neue Forschungsrichtungen etabliert: skalierbare Verarbeitung unstrukturierter Daten und latenzfreie Datenstromverarbeitung. Skalierbare Verarbeitung unstrukturierter Daten, auch bekannt unter dem Begriff "Big Data"-Verarbeitung, hat in der Industrie schnell Einzug erhalten. G
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Nedas, Konstantinos A. "Semantic Similarity of Spatial Scenes." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/NedasKA2006.pdf.

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4

Giese, Holger, Stephan Hildebrandt, and Leen Lambers. "Toward bridging the gap between formal semantics and implementation of triple graph grammars." Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2010/4521/.

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The correctness of model transformations is a crucial element for the model-driven engineering of high quality software. A prerequisite to verify model transformations at the level of the model transformation specification is that an unambiguous formal semantics exists and that the employed implementation of the model transformation language adheres to this semantics. However, for existing relational model transformation approaches it is usually not really clear under which constraints particular implementations are really conform to the formal semantics. In this paper, we will bridge this gap
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Wong, Ping-wai, and 黃炳蔚. "Semantic annotation of Chinese texts with message structures based on HowNet." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B38212389.

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6

Herre, Heinrich, and Axel Hummel. "A paraconsistent semantics for generalized logic programs." Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2010/4149/.

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We propose a paraconsistent declarative semantics of possibly inconsistent generalized logic programs which allows for arbitrary formulas in the body and in the head of a rule (i.e. does not depend on the presence of any specific connective, such as negation(-as-failure), nor on any specific syntax of rules). For consistent generalized logic programs this semantics coincides with the stable generated models introduced in [HW97], and for normal logic programs it yields the stable models in the sense of [GL88].
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Lamprecht, Anna-Lena, Tiziana Margaria, and Bernhard Steffen. "Bio-jETI : a framework for semantics-based service composition." Universität Potsdam, 2009. http://opus.kobv.de/ubp/volltexte/2010/4506/.

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Background: The development of bioinformatics databases, algorithms, and tools throughout the last years has lead to a highly distributedworld of bioinformatics services. Without adequatemanagement and development support, in silico researchers are hardly able to exploit the potential of building complex, specialized analysis processes from these services. The Semantic Web aims at thoroughly equipping individual data and services with machine-processable meta-information, while workflow systems support the construction of service compositions. However, even in this combination, in silico rese
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Zhan, Tianjie. "Semantic analysis for extracting fine-grained opinion aspects." HKBU Institutional Repository, 2010. http://repository.hkbu.edu.hk/etd_ra/1213.

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9

Otten, Frederick John. "Using semantic knowledge to improve compression on log files." Thesis, Rhodes University, 2008. http://eprints.ru.ac.za/1660/.

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10

Harrison, Dave. "Functional real-time programming : the language Ruth and its semantics." Thesis, University of Stirling, 1988. http://hdl.handle.net/1893/12116.

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Real-time systems are amongst the most safety critical systems involving computer software and the incorrect functioning of this software can cause great damage, up to and including the loss of life. If seems sensible therefore to write real-time software in a way that gives us the best chance of correctly implementing specifications. Because of the high level of functional programming languages, their semantic simplicity and their amenability to formal reasoning and correctness preserving transformation it thus seems natural to use a functional language for this task. This thesis explores the
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Pham, Son Bao Computer Science &amp Engineering Faculty of Engineering UNSW. "Incremental knowledge acquisition for natural language processing." Awarded by:University of New South Wales. School of Computer Science and Engineering, 2006. http://handle.unsw.edu.au/1959.4/26299.

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Linguistic patterns have been used widely in shallow methods to develop numerous NLP applications. Approaches for acquiring linguistic patterns can be broadly categorised into three groups: supervised learning, unsupervised learning and manual methods. In supervised learning approaches, a large annotated training corpus is required for the learning algorithms to achieve decent results. However, annotated corpora are expensive to obtain and usually available only for established tasks. Unsupervised learning approaches usually start with a few seed examples and gather some statistics based on a
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Barber, Nicole. "Aktionsart coercion." University of Western Australia. School of Humanities, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0248.

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This study aimed to investigate English Aktionsart coercion, particularly novel coercion, through corpora-based research. Novel coercions are those which need some contextual support in order to make sense of or be grammatical. Due to the nature of the data, a necessary part of the study was the design of a program to help in the process of tagging corpora for Aktionsart. This thesis starts with a discussion of five commonly accepted Aktionsarten: state, activity, achievement, accomplishment, and semelfactive. One significant contribution of the thesis is that it offers a comprehensive review
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Yang, Yimin. "Exploring Hidden Coherent Feature Groups and Temporal Semantics for Multimedia Big Data Analysis." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2254.

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Thanks to the advanced technologies and social networks that allow the data to be widely shared among the Internet, there is an explosion of pervasive multimedia data, generating high demands of multimedia services and applications in various areas for people to easily access and manage multimedia data. Towards such demands, multimedia big data analysis has become an emerging hot topic in both industry and academia, which ranges from basic infrastructure, management, search, and mining to security, privacy, and applications. Within the scope of this dissertation, a multimedia big data analysis
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Gunaratna, Kalpa. "Semantics-based Summarization of Entities in Knowledge Graphs." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1496124815009777.

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15

Varde, Aparna S. "Graphical data mining for computational estimation in materials science applications." Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-081506-152633/.

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Sousa, Sidney Roberto de. "Gerenciamento de anotações semanticas de dados na Web para aplicações agricolas." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/275829.

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Orientador: Claudia Maria Bauzer Medeiros<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Computação<br>Made available in DSpace on 2018-08-15T17:25:33Z (GMT). No. of bitstreams: 1 Sousa_SidneyRobertode_M.pdf: 6639415 bytes, checksum: fbd426bff26dda1788b1310f9167190c (MD5) Previous issue date: 2010<br>Resumo: Sistemas de informação geográfica a cada vez mais utilizam informação geo-espacial da Web para produzir informação geográfica. Um grande desafio para tais sistemas é encontrar dados relevantes, onde tal busca é frequentemente baseada em palavras-chave ou nome
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Vitaliano, Filho Arnaldo Francisco 1982. "Mecanismos de anotação semântica para workfows cientificos." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/275760.

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Orientador: Claudia Maria Bauzer Medeiros<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Computação<br>Made available in DSpace on 2018-08-18T01:37:29Z (GMT). No. of bitstreams: 1 VitalianoFilho_ArnaldoFrancisco_M.pdf: 2435279 bytes, checksum: d273e44a51be70002d918835c2e5c11b (MD5) Previous issue date: 2009<br>Resumo: O compartilhamento de informações, processos e modelos de experimentos entre cientistas de diferentes organizações e domínios do conhecimento vem aumentando com a disponibilização dessas informações e modelos na Web. Muitos destes modelos de experim
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Herre, Heinrich, and Axel Hummel. "Stationary generated models of generalized logic programs." Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2010/4150/.

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The interest in extensions of the logic programming paradigm beyond the class of normal logic programs is motivated by the need of an adequate representation and processing of knowledge. One of the most difficult problems in this area is to find an adequate declarative semantics for logic programs. In the present paper a general preference criterion is proposed that selects the ‘intended’ partial models of generalized logic programs which is a conservative extension of the stationary semantics for normal logic programs of [Prz91]. The presented preference criterion defines a partial model of a
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Faruque, Md Ehsanul. "A Minimally Supervised Word Sense Disambiguation Algorithm Using Syntactic Dependencies and Semantic Generalizations." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4969/.

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Natural language is inherently ambiguous. For example, the word "bank" can mean a financial institution or a river shore. Finding the correct meaning of a word in a particular context is a task known as word sense disambiguation (WSD), which is essential for many natural language processing applications such as machine translation, information retrieval, and others. While most current WSD methods try to disambiguate a small number of words for which enough annotated examples are available, the method proposed in this thesis attempts to address all words in unrestricted text. The method is bas
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Sinha, Ravi Som. "Graph-based Centrality Algorithms for Unsupervised Word Sense Disambiguation." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc9736/.

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This thesis introduces an innovative methodology of combining some traditional dictionary based approaches to word sense disambiguation (semantic similarity measures and overlap of word glosses, both based on WordNet) with some graph-based centrality methods, namely the degree of the vertices, Pagerank, closeness, and betweenness. The approach is completely unsupervised, and is based on creating graphs for the words to be disambiguated. We experiment with several possible combinations of the semantic similarity measures as the first stage in our experiments. The next stage attempts to score in
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Smith, Marc L. "View-centric reasoning about parallel and distributed computation." Doctoral diss., University of Central Florida, 2000. http://digital.library.ucf.edu/cdm/ref/collection/RTD/id/1597.

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University of Central Florida College of Engineering Thesis<br>The development of distributed applications has not progressed as rapidly as its enabling technologies. In part, this is due to the difficulty of reasoning about such complex systems. In contrast to sequential systems, parallel systems give rise to parallel events, and the resulting uncertainty of the observed order of these events. Loosely coupled distributed systems complicate this even further by introducing the element of multiple imperfect observers of these parallel events. The goal of this dissertation is to advance parallel
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Hartig, Olaf. "Querying a Web of Linked Data." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2014. http://dx.doi.org/10.18452/17015.

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In den letzten Jahren haben sich spezielle Prinzipien zur Veröffentlichung strukturierter Daten im World Wide Web (WWW) etabliert. Diese Prinzipien erlauben es, von den jeweils angebotenen Daten auf weitere, nach den selben Prinzipien veröffentlichten Daten zu verweisen. Die daraus resultierende Form von Web-Daten wird entsprechend als Linked Data bezeichnet. Mit der Veröffentlichung von Linked Data im WWW entsteht ein sehr großer Datenraum, welcher Daten verschiedenster Anbieter miteinander verbindet und neuartige Möglichkeiten für Web-basierte Anwendungen bietet. Als Basis für die Entwicklun
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Doyen, Laurent. "Algorithmic analysis of complex semantics for timed and hybrid automata." Doctoral thesis, Universite Libre de Bruxelles, 2006. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210853.

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In the field of formal verification of real-time systems, major developments have been recorded in the last fifteen years. It is about logics, automata, process algebra, programming languages, etc. From the beginning, a formalism has played an important role: timed automata and their natural extension,hybrid automata. Those models allow the definition of real-time constraints using real-valued clocks, or more generally analog variables whose evolution is governed by differential equations. They generalize finite automata in that their semantics defines timed words where each symbol is associat
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Yang, Li. "Improving Topic Tracking with Domain Chaining." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4274/.

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Topic Detection and Tracking (TDT) research has produced some successful statistical tracking systems. While lexical chaining, a non-statistical approach, has also been applied to the task of tracking by Carthy and Stokes for the 2001 TDT evaluation, an efficient tracking system based on this technology has yet to be developed. In thesis we investigate two new techniques which can improve Carthy's original design. First, at the core of our system is a semantic domain chainer. This chainer relies not only on the WordNet database for semantic relationships but also on Magnini's semantic domain d
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Cregan, Anne Computer Science &amp Engineering Faculty of Engineering UNSW. "Weaving the semantic web: Contributions and insights." Publisher:University of New South Wales. Computer Science & Engineering, 2008. http://handle.unsw.edu.au/1959.4/42605.

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The semantic web aims to make the meaning of data on the web explicit and machine processable. Harking back to Leibniz in its vision, it imagines a world of interlinked information that computers `understand' and `know' how to process based on its meaning. Spearheaded by the World Wide Web Consortium, ontology languages OWL and RDF form the core of the current technical offerings. RDF has successfully enabled the construction of virtually unlimited webs of data, whilst OWL gives the ability to express complex relationships between RDF data triples. However, the formal semantics of these lan
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Macario, Carla Geovana do Nascimento. "Anotação semantica de dados geoespaciais." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/275838.

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Orientador: Claudia Maria Bauzer Medeiros<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Computação<br>Made available in DSpace on 2018-08-15T04:11:30Z (GMT). No. of bitstreams: 1 Macario_CarlaGeovanadoNascimento_D.pdf: 3780981 bytes, checksum: 4b8ad7138779392bff940f1f95ad1f51 (MD5) Previous issue date: 2009<br>Resumo: Dados geoespaciais constituem a base para sistemas de decisão utilizados em vários domínios, como planejamento de transito, fornecimento de serviços ou controle de desastres. Entretanto, para serem usados, estes dados precisam ser analisados e interpreta
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Santanchè, André 1968. "Fluid Web e componentes de conteudo digital : da visão centrada em documentos para a visão centrada em conteudo." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/276279.

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Orientador: Claudia Bauer Medeiros<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Computação<br>Made available in DSpace on 2018-08-07T03:38:23Z (GMT). No. of bitstreams: 1 Santanche_Andre_D.pdf: 5630081 bytes, checksum: a9ac93609b33f3525c7597c3bbc398b9 (MD5) Previous issue date: 2006<br>Resumo: A Web está evoluindo de um espaço para publicação/consumo de documentos para um ambiente para trabalho colaborativo, onde o conteúdo digital pode viajar e ser replicado, adaptado, decomposto, fundido e transformado. Designamos esta perspectiva por Fluid Web. Esta visão requer u
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Thakur, Amritanshu. "Semantic construction with provenance for model configurations in scientific workflows." Master's thesis, Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-07312008-092758.

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Schwartz, Hansen A. "The acquisition of lexical knowledge from the web for aspects of semantic interpretation." Doctoral diss., University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5028.

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Applications to word sense disambiguation, an aspect of semantic interpretation, are used to evaluate the contributions. Disambiguation systems which utilize semantically annotated training data are considered supervised. The algorithms of this dissertation are considered minimally-supervised; they do not require training data created by humans, though they may use human-created data sources. In the case of evaluating a database of common sense knowledge, integrating the knowledge into an existing minimally-supervised disambiguation system significantly improved results -- a 20.5\% error reduc
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Marques, Caio Miguel [UNESP]. "Pangea - Arquitetura semântica para a integração de dados e modelos geoespaciais na Web." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/98654.

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Made available in DSpace on 2014-06-11T19:29:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-08-05Bitstream added on 2014-06-13T18:59:18Z : No. of bitstreams: 1 marques_cm_me_sjrp.pdf: 1538758 bytes, checksum: c5b451433af39d95469d3e12a5eb6665 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Em muitas áreas do conhecimento e da atividade humana é requerida, impreterivelmente, a integração de informações geográficas. Atualmente, grande quantidade dessas informações geográficas estão publicadas na Web, por atores diversos, indo desde instituições governa
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Marques, Caio Miguel. "Pangea - Arquitetura semântica para a integração de dados e modelos geoespaciais na Web /." São José do Rio Preto : [s.n.], 2010. http://hdl.handle.net/11449/98654.

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Orientador: Ivan Rizzo Guilherme<br>Banca: Marilde Terezinha Prado Santos<br>Banca: Carlos Roberto Valêncio<br>Resumo: Em muitas áreas do conhecimento e da atividade humana é requerida, impreterivelmente, a integração de informações geográficas. Atualmente, grande quantidade dessas informações geográficas estão publicadas na Web, por atores diversos, indo desde instituições governamentais, academia, até cidadãos comuns. Esses atores publicam dados geográficos em diversos formatos e utilizando tecnologias variadas. Neste contexto, apesar da enorme quantidade de dados e modelos geográficos publi
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Abu, Salih Bilal Ahmad Abdal Rahman. "Trustworthiness in Social Big Data Incorporating Semantic Analysis, Machine Learning and Distributed Data Processing." Thesis, Curtin University, 2018. http://hdl.handle.net/20.500.11937/70285.

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This thesis presents several state-of-the-art approaches constructed for the purpose of (i) studying the trustworthiness of users in Online Social Network platforms, (ii) deriving concealed knowledge from their textual content, and (iii) classifying and predicting the domain knowledge of users and their content. The developed approaches are refined through proof-of-concept experiments, several benchmark comparisons, and appropriate and rigorous evaluation metrics to verify and validate their effectiveness and efficiency, and hence, those of the applied frameworks.
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Endris, Kemele M. [Verfasser]. "Federated Query Processing over Heterogeneous Data Sources in a Semantic Data Lake / Kemele M. Endris." Bonn : Universitäts- und Landesbibliothek Bonn, 2020. http://d-nb.info/1218301740/34.

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Chui, Ka-lam Elsa, and 徐嘉琳. "A semantic web architecture for personalized profiles." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B2961336X.

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Goss, Ryan Gavin. "Enabling e-learning 2.0 in information security education: a semantic web approach." Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/909.

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The motivation for this study argued that current information security ed- ucation systems are inadequate for educating all users of computer systems world wide in acting securely during their operations with information sys- tems. There is, therefore, a pervasive need for information security knowledge in all aspects of modern life. E-Learning 2.0 could possi- bly contribute to solving this problem, however, little or no knowledge currently exists regarding the suitability and practicality of using such systems to infer information security knowledge to learners.
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Perry, Matthew Steven. "A Framework to Support Spatial, Temporal and Thematic Analytics over Semantic Web Data." Wright State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1219267560.

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Morgan, Jac F. "The design of a small business database using the Semantic Database Model." Thesis, Kansas State University, 1985. http://hdl.handle.net/2097/9867.

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Yu, Zhiguo. "Cooperative Semantic Information Processing for Literature-Based Biomedical Knowledge Discovery." UKnowledge, 2013. http://uknowledge.uky.edu/ece_etds/33.

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Given that data is increasing exponentially everyday, extracting and understanding the information, themes and relationships from large collections of documents is more and more important to researchers in many areas. In this paper, we present a cooperative semantic information processing system to help biomedical researchers understand and discover knowledge in large numbers of titles and abstracts from PubMed query results. Our system is based on a prevalent technique, topic modeling, which is an unsupervised machine learning approach for discovering the set of semantic themes in a large set
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Bergström, Mattias, and Per Fahlander. "Evaluating a Novel, Scalable Natural Language Processing Heuristic for Determining Semantic Relatedness." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-260067.

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Distributional semantics is a recent research field aiming to quantify how close one text is to another in terms of contextual meaning. In this study we propose and evaluate a novel distributional semantics model on how much agreement its predictions can yield with a set of 12,227 human opinions. We call this method Refined Semantic Relatedness (RSR), which applies an incrementally improvable word association index and some distributional principles for producing theoretically educated predictions. Using 1951 preprocessed Wikipedia articles as a basis for the predictions, the model predicted t
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Marupudi, Surendra Brahma. "Framework for Semantic Integration and Scalable Processing of City Traffic Events." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1472505847.

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Linckels, Serge, and Christoph Meinel. "An e-librarian service : natural language interface for an efficient semantic search within multimedia resources." Universität Potsdam, 2005. http://opus.kobv.de/ubp/volltexte/2009/3308/.

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1 Introduction 1.1 Project formulation 1.2 Our contribution 2 Pedagogical Aspect 4 2.1 Modern teaching 2.2 Our Contribution 2.2.1 Autonomous and exploratory learning 2.2.2 Human machine interaction 2.2.3 Short multimedia clips 3 Ontology Aspect 3.1 Ontology driven expert systems 3.2 Our contribution 3.2.1 Ontology language 3.2.2 Concept Taxonomy 3.2.3 Knowledge base annotation 3.2.4 Description Logics 4 Natural language approach 4.1 Natural language processing in computer science 4.2 Our contribution 4.2.1 Explored strategies 4.2.2 Word equivalence 4.2.3 Semantic interpre
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Chan, Wing Sze. "Semantic search of multimedia data objects through collaborative intelligence." HKBU Institutional Repository, 2010. http://repository.hkbu.edu.hk/etd_ra/1171.

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Courtot, Melanie. "Semantic models in biomedicine : building interoperating ontologies for biomedical data representation and processing in pharmacovigilance." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/46804.

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It is increasingly challenging to analyze the data produced in biomedicine, even more so when relying on manual analysis methods. My hypothesis is that using a common representation of knowledge, implemented via standard tools, and logically formalized can make those datasets computationally amenable, help with data integration from multiple sources and allow to answer complex queries. The first part of this dissertation demonstrates that ontologies can be used as common knowledge models, and details several use cases where they have been applied to existing information in the domain of biomed
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Räling, Romy [Verfasser], Isabell [Akademischer Betreuer] Wartenburger, and Astrid [Akademischer Betreuer] Schröder. "Age of acquisition and semantic typicality effects : evidences for distinct processing origins from behavioural and ERP data in healthy and impaired semantic processing / Romy Räling ; Isabell Wartenburger, Astrid Schröder." Potsdam : Universität Potsdam, 2016. http://d-nb.info/1218400897/34.

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Hellmann, Sebastian. "Integrating Natural Language Processing (NLP) and Language Resources Using Linked Data." Doctoral thesis, Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-157932.

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This thesis is a compendium of scientific works and engineering specifications that have been contributed to a large community of stakeholders to be copied, adapted, mixed, built upon and exploited in any way possible to achieve a common goal: Integrating Natural Language Processing (NLP) and Language Resources Using Linked Data The explosion of information technology in the last two decades has led to a substantial growth in quantity, diversity and complexity of web-accessible linguistic data. These resources become even more useful when linked with each other and the last few years have see
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Fan, Yang, Hidehiko Masuhara, Tomoyuki Aotani, Flemming Nielson, and Hanne Riis Nielson. "AspectKE*: Security aspects with program analysis for distributed systems." Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2010/4136/.

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Enforcing security policies to distributed systems is difficult, in particular, when a system contains untrusted components. We designed AspectKE*, a distributed AOP language based on a tuple space, to tackle this issue. In AspectKE*, aspects can enforce access control policies that depend on future behavior of running processes. One of the key language features is the predicates and functions that extract results of static program analysis, which are useful for defining security aspects that have to know about future behavior of a program. AspectKE* also provides a novel variable binding mech
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47

Necşulescu, Silvia. "Automatic acquisition of lexical-semantic relations: gathering information in a dense representation." Doctoral thesis, Universitat Pompeu Fabra, 2016. http://hdl.handle.net/10803/374234.

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Lexical-semantic relationships between words are key information for many NLP tasks, which require this knowledge in the form of lexical resources. This thesis addresses the acquisition of lexical-semantic relation instances. State of the art systems rely on word pair representations based on patterns of contexts where two related words co-occur to detect their relation. This approach is hindered by data sparsity: even when mining very large corpora, not every semantically related word pair co-occurs or not frequently enough. In this work, we investigate novel representations to predict if tw
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48

Linckels, Serge. "An e-librarian service : supporting explorative learning by a description logics based semantic retrieval tool." Phd thesis, Universität Potsdam, 2008. http://opus.kobv.de/ubp/volltexte/2008/1745/.

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Although educational content in electronic form is increasing dramatically, its usage in an educational environment is poor, mainly due to the fact that there is too much of (unreliable) redundant, and not relevant information. Finding appropriate answers is a rather difficult task being reliant on the user filtering of the pertinent information from the noise. Turning knowledge bases like the online tele-TASK archive into useful educational resources requires identifying correct, reliable, and "machine-understandable" information, as well as developing simple but efficient search tools with t
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49

Greenwell, Richard. "An approach to the semantic intelligence cloud." Thesis, Edinburgh Napier University, 2018. http://researchrepository.napier.ac.uk/Output/1255157.

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Cloud computing is a disruptive technology that aims to provide a utility approach to computing, where users can obtain their required computing resources without investment in infrastructure, computing platforms or services. Cloud computing resources can be obtained from a number internal or external sources. The heterogeneity of cloud service provision makes comparison of services difficult, with further complexity being introduced by a number of provision approaches such as reserved purchase, on-demand provisioning and spot markets. The aim of the research was to develop a semantic framewor
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50

Zampetakis, Stamatis. "Scalable algorithms for cloud-based Semantic Web data management." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112199/document.

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Afin de construire des systèmes intelligents, où les machines sont capables de raisonner exactement comme les humains, les données avec sémantique sont une exigence majeure. Ce besoin a conduit à l’apparition du Web sémantique, qui propose des technologies standards pour représenter et interroger les données avec sémantique. RDF est le modèle répandu destiné à décrire de façon formelle les ressources Web, et SPARQL est le langage de requête qui permet de rechercher, d’ajouter, de modifier ou de supprimer des données RDF. Être capable de stocker et de rechercher des données avec sémantique
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