Self Organizing Semantic Topologies in Peer Database Systems Ami Eyal Self Organizing Semantic Topologies in Peer Database Systems Research Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science in Information Management Engineering
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منابع مشابه
Self Organizing Semantic Topologies in Peer Database Systems
A semantic topology is a peer overlay network connected via semantic links, constructed using schema mappings and used for peer querying. The large-scale and dynamic environments of P2P networks dictate the use of automatic schema matching, which was shown to carry with it a degree of uncertainty, entailing uncertainty amplification over transitive mappings. Therefore, peers prefer network topo...
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This paper proposes a new method to distinguish the printed digits, regardless of font and size, using neural networks.Unlike our proposed method, existing neural network based techniques are only able to recognize the trained fonts. These methods need a large database containing digits in various fonts. New fonts are often introduced to the public, which may not be truly recognized by the Opti...
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Background and Aim: Information systems cannot be well designed or developed without a clear understanding of needs of users, manner of their information seeking and evaluating. This research has been designed to analyze the Ganj (Iranian research institute of science and technology database) users’ query refinement behaviors via log analysis. Methods: The method of this research is log anal...
متن کاملHospital information systems interoperability in Iran
Introduction: Interoperability is needed when the Hospital Information System (HIS) data should be combined and shared with different systems. This study was aimed to determine the semantic and technical interoperability of hospital information systems of Iran’s health care centers and propose guidelines to create and develop interoperability of these centers. Methods: This descriptive st...
متن کاملInternational Workshop on Emergent Semantics and Ontology Evolution
Until recently, most data interoperability techniques involved central components, e.g., global schemas or ontologies, to overcome semantic heterogeneity for enabling transparent access to heterogeneous data sources. Today, however, with the democratization of tools facilitating knowledge elicitation in machineprocessable formats, one cannot rely on global, centralized schemas anymore as knowle...
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تاریخ انتشار 2007