Universidad de Chile

Displaying 1 - 5 of 5 results

  • Modeling the Web of Data

    White Papers // May 2011 // provided by Universidad de Chile

    The view of a universal space of information as the (infinite) generalization of a library is an extremely useful one. It includes almost all facets the authors would like to incorporate when abstracting and modeling such an artifact. There is one crucial slant, though: the library is composed of books, ...

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  • SNQL: A Social Networks Query and Transformation Language

    White Papers // Apr 2011 // provided by Universidad de Chile

    Social Network (SN) data has become ubiquitous, demanding advanced and flexible means to represent transform and query such data. In addition to the intrinsic challenges of querying graph data is the requirement that networks be restructured, and thus that new values be created. To address these, the authors introduce a ...

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  • Updating RDFS: From Theory to Practice

    White Papers // Mar 2011 // provided by Universidad de Chile

    There is a comprehensive body of theory studying updates and schema evolution of knowledge bases, ontologies, and in particular of RDFS. In this paper the authors turn these ideas into practice by presenting a feasible and practical procedure for updating RDFS. Along the lines of ontology evolution, they treat schema ...

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  • Subqueries in SPARQL

    White Papers // Mar 2011 // provided by Universidad de Chile

    Subqueries are a powerful feature which allows enforcing reuse, composition, rewriting and optimization in a query language. In this paper the authors perform a comprehensive study of the incorporation of subqueries into SPARQL. They consider the many possible choices as suggested by the experience of similar languages, as well as ...

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  • Revisiting the Rice Theorem of Cellular Automata

    White Papers // Feb 2011 // provided by Universidad de Chile

    A cellular automaton is a parallel synchronous computing model, which consists in a juxtaposition of finite automata whose state evolves according to that of their neighbors. It induces a dynamical system on the set of configurations, i.e. the infinite sequences of cell states. The limit set of the cellular automaton ...

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