Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 346 for “"Ontologies"”.
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Ontologies turístiques geogràfiques
En els propers anys, la Web semàntica i les tecnologies que porta associades sembla que constituiran els eixos vertebradors d'una nova manera d'entendre la Xarxa. Aquesta deixarà de ser un mer repositori d'informació per a convertir-se en un ens capaç de generar coneixement per si sol, on màquines …
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Harvesting online ontologies for ontology evolution
Ontologies need to evolve to keep their domain representation adequate. However, the process of identifying new domain changes, and applying them to the ontology is tedious and time-consuming.<br></br><br></br> Our hypothesis is that online ontologies can provide background knowledge to decrease …
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Managing Uncertainty and Ontologies in Databases
… and web data is the increasing use of ontologies to describe the semantics of data, i.e., the semantic relationships between the terms in the databases. As such information is usually absent from traditional databases, there is tremendous opportunity to ask new kinds of queries that …
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Generating Data-Extraction Ontologies By Example
… manually develop and maintain data-extraction ontologies. The limitation prevents ordinary users who have little knowledge of conceptual models from making use of this resilient approach. In this thesis we have designed and implemented a general framework, OntoByE, to generate data-extraction …
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Handling vagueness in ontologies of geographical information
… approach to the problem of handling vagueness in ontologies of geographical information. Ontologies are formal representations of a set of concepts and the relationships that hold between those concepts. They have been proposed as a method of representing geographical information logically, but …
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Semantic querying and search in distributed ontologies
… of accessing RDF data across distributed ontologies. The existing approaches lack a broad mix of RDF indexing and retrieving of distributed RDF data in one package. In addition, the efficiency of the current methods is not so dynamic and mainly depend on manual fixed strategies for …
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Kimono threads: unraveling ontologies, epistemologies, and ethics
… a different angle on kimono knowledge: kimono ontologies, kimono epistemologies, and kimono ethics. I think with grassroots theorists, kimono enthusiasts, and activists to present alternative approaches to these questions that begin to fill in the gaps left behind by the macro-level approach …
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Merging ontologies in the context mediation framework
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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Using Ontologies to Support Interoperability in Federated Simulation
… simulations is developed. This framework uses ontologies as a means to capture the semantics of different simulation concepts shared in a federation in a formal, reusable fashion. Using these semantics, a common representation for shared simulation entities, and a corresponding set of …
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Faceted Lightweight Ontologies: a Formalization and some Experiments
… -- ontology - which can serve this purpose. Ontologies are core artifacts of the Semantic Web which enable machines to use inference rules to conduct automated reasoning on data. Lightweight ontologies bridge the gap between classifications and ontologies. A lightweight ontology (LO) is an …
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Generating Natural Language Explanations For Entailments In Ontologies
… generating explanations for entailments in OWL ontologies. We build on earlier work on identifying minimal subsets of the ontology from which an entailment can be drawn---known technically as justifications. Our main focus is on planning (at a logical level) an explanation that links a …
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Evolving ontologies with online learning and forgetting algorithms
… algorithms to enable agents to evolve their ontologies.<br/><br/>More specifically, we present three online evolution algorithms that enable agents to: i) augment domain related concepts, ii) use prediction to select concepts to learn, and iii) prune unnecessary concepts from their ontology, …
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ModOnto: A Suite of Tools for Modularizing Ontologies
Devido aos problemas relacinados com o gerenciamento e o raciocínio em grandes ontologias, um forte interesse e uma conseqüente investigação ativa em modularização de ontologias vem emergindo na comunidade científica relacionada à Web Semântica. Uma vez que muitas ontologias são preferivelmente …
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A web-based system for collaboratively developed ontologies
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
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Relationships among various ontologies and accounts of modality
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Linguistics and Philosophy, 1983.
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Village Voice : expressing narrative through community-designed ontologies
The Village Voice project is a study of the efficacy of a localized ontology in the dissemination of narrative. It seeks to understand how community members can articulate their lives in ways that allow each other to reflect on the makeup of their overall community, and how they represent their …
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Development of dynamic database structures using OWL ontologies
… of the data that a modem biologist requires. OWL ontologies provide much more information about how fields relate to each other including adding annotations with each field, but do not allow for the storage of mass amounts of data. By integrating OWL ontologies with modem database systems, …
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Defining Safe Training Datasets for Machine Learning Models Using Ontologies
… as a proof of concept for this method where ontologies are built for the emergency road vehicle domain.</p>
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Semantic Selection of Internet Sources through SWRL Enabled OWL Ontologies
… of internet sources, through SWRL enabled OWL ontologies. the research focuses on SWT and its Stack because they (a)secure the semantic interpretation of the environments where internet searches take place and (b) guarantee reasoning that results in the selection of suitable internet sources in …
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