Volumen 7 No. especial (2016) - TIC.EC: Congreso Ecuatoriano de Tecnologías de la Información y Comunicaciones

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Browsing Volumen 7 No. especial (2016) - TIC.EC: Congreso Ecuatoriano de Tecnologías de la Información y Comunicaciones by Author "Espinoza, Mauricio"

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    Automatic RDF-ization of big data semi-structured datasets
    (Universidad de Cuenca, 2016-11-16) Gualán, Ronald; Freire, Renán; Tello, Andrés; Espinoza, Mauricio; Saquicela Galarza, Víctor Hugo
    Linked data adoption continues to grow in many fields at a considerable pace. However, some of the most important datasets usually remain underexploited because of two main reasons: the huge volume of the datasets and the lack of methods for automatic conversion to RDF. This paper presents an automatic approach to tackle these problems by leveraging recent Big Data tools and a program for automatic conversion from a relational model to RDF. Overall, the process can be summarized in three steps: 1) bulk transfer of data from different sources to Hive/HDFS; 2) transformation of data on Hive to RDF using D2RQ; and 3) storing the resulting RDF in CumulusRDF. By using these Big Data tools, the platform will cope with the handling of big amounts of data available in different sources, which can include structured or semi-structured data. Moreover, since the RDF data are stored in CumulusRDF in the final step, users or applications can consume the resulting data by means of web services or SPARQL queries. Finally, an evaluation in the hydro-meteorological domain demonstrates the soundness of our approach.
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    Ontología DHARMA para la construcción de arquitectura de sistemas empresariales
    (Universidad de Cuenca, 2016-11-16) Pérez, Wilson; Abad, Karina; Carvallo, Juan Pablo; Espinoza, Mauricio; Saquicela Galarza, Víctor Hugo
    The construction of enterprise context models, a fundamental tool for the design of modern information systems, is usually a cumbersome task, largely as a consequence of the lack of communication between administrative staff and technical consultants in charge of its construction. In order to make this task easier, previous works proposed the reuse of context elements identified in various industrial cases, which have been packaged and stored in a catalog specifically designed for this purpose. The authors propose to go one step further, using semantic technologies to exploit the catalog, storing its content in a semantic repository designed to support the construction of context models. In order to construct the repository, NeOn ontology was adopted to develop a network ontology which integrates different domains and their vocabularies, based on different scenarios that allows the capturing of the requirements, reuse and enrichment of ontologies.