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Journal of Digital Information
203 Publications


  • Efficiency Considerations for Scalable Information Retrieval Servers

    We review a variety of techniques to improve efficiency in information retrieval. Given the increasing volumes of data that are available electronically, understanding and using such techniques is critical. We address several efficiency concerns, but our primary focus is on index processing since it dominates the computational demands of information retrieval. Given the importance of index processing, in addition to a general overview we include some recent index maintenance results. Thes...

    How Oke-Ogun Crosses the Digital Divide: Study of a Nigerian Rural Development Project

    The dominant paradigm of information and communication technologies (ICTs) as an enabling force for socioeconomic progress informs most worldwide development projects and frames much of the literature that surrounds them. What is often missing in these accounts is the human factor; the people that make the technology work. This account of the history of the Oke-Ogun Community Development Network in rural Nigeria demonstrates how ICTs do not just "come" to a rural population, but are introduce...


    This paper presents the METAXPath data model and query language. METAXPath extends XPath with support for XML metadata. XPath is a specification language for locations in an XML document. It serves as the basis for XML query languages like XSLT and the XML Query Algebra. The METAXPath data model is a nested XPath tree. Each level of metadata induces a new level of nesting. The data model separates metadata and data into different dataspaces, supports meta-metadata, and enables sharing of ...

    WIED: A Web Modelling Language for Modelling Architectural-Level Information Flows

    The ability to reliably and consistently develop systems that utilise Internet and Web technologies has become increasingly important. These systems are typically both functionally complex and information-rich, and have a number of unique characteristics that should imply specific changes to the development processes, methods and models that are adopted. One aspect that has received increasing attention is information modelling for these applications, particularly with respect to aspects such...

    Preserving and delivering audiovisual content integrating Fedora Commons and MediaMosa

    The article describes the integrated adoption of Fedora Commons and MediaMosa for managing a digital repository. The integration was experimented along with the development of a cooperative project, Sapienza Digital Library (SDL). The functionalities of the two applications were exploited to built a weaving factory, useful for archiving, preserving and disseminating of multi-format and multi-protocol audio video contents, in different fruition contexts. The integration was unleashed by means ...
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