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  • Digital Curation Unit
    International Conference on Dublin Core and Metadata Applications DC 2013 Lisbon Portugal September 2013 Pages 115 125 Original location URL Abstract Mapping between different data models in a data aggregation context always presents significant interoperability challenges In this paper we describe the challenges faced and solutions developed when mapping the CARARE schema designed for archaeological and architectural monuments and sites to the Europeana Data Model EDM a model based on

    Original URL path: http://www.dcu.gr/index.php?p=publications&lang=en§ion=0&id=56 (2016-02-15)
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  • Digital Curation Unit
    Conference on Theory and Practice of Digital Libraries TPDL 2013 Valetta Malta September 2013 Pages 132 137 Original location URL Abstract The emergence of the European Digital Library Europeana presents the need for aggregating content using a more intelligent and effective approach taking into account the need to support potential changes in target metadata schemas and new services This paper presents the concept architecture and services provided by a curation

    Original URL path: http://www.dcu.gr/index.php?p=publications&lang=en§ion=0&id=57 (2016-02-15)
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  • Digital Curation Unit
    Leonidas Papachristopoulos Michalis Sfakakis Giannis Tsakonas Christos Papatheodorou 2013 Proceedings of the 13th ACM IEE CS joint conference on Digital libraries JCDL 13 Indianapolis Indiana USA July 2013 Pages 125 134 Original location URL Abstract The digital library evaluation field has an evolving nature and it is characterized by a noteworthy proclivity to enfold various methodological orientations Given the fact that the scientific literature in the specific domain is vast researchers require tools that will exhibit either commonly acceptable practices or areas for further investigation In this paper a data mining methodology is proposed to identify prominent patterns in the evaluation of digital libraries Using Machine Learning techniques all papers presented in the ECDL and JCDL conferences between the years 2001 and 2011 were categorized as relevant or non relevant to the DL evaluation domain Then the relevant papers were semantically annotated according to the Digital Library Evaluation Ontology DiLEO vocabulary The produced set of annotations was clustered to evaluation patterns for the most frequently used tools methods and goals of the domain Our findings highlight the expressive nature of DiLEO place emphasis on semantic annotation as a necessary step in handling domain centric corpora and underline the potential of

    Original URL path: http://www.dcu.gr/index.php?p=publications&lang=en§ion=0&id=59 (2016-02-15)
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  • Digital Curation Unit
    Drawing from a comprehensive workplan which involves conceptual and technical work regarding the planned research infrastructure and culminates in large scale trialling and transnational community engagement we will address Firstly our methodological approach based on evidence based analysis of actual and prospective user needs and requirements analysis reliance on semantic technologies and standards conformance Secondly preliminary results on the specification of the ARIADNE architecture focusing on 1 the ARIADNE interoperability framework including the internal API based and external human interfaces to the infrastructure and consisting of a Repository management catering for metadata metadata schemas vocabularies thesauri gazetteers and datasets b Metadata registry providing a catalog of metadata schemas with elements semantically organized according to ISO11179 c Import service ingesting metadata schemas and thesauri to the registry d Harvester gathering metadata from archaeological collections e Aggregator and f Service Orchestrator 2 planned integrated services including a Ingestion b User interface components c User authentication and authorization services d Visualization services and e Long term digital preservation services and 3 the architecture and functional specifications of the ARIADNE metadata registry driven by an evidence based survey and analysis of metadata schemas existing mappings between them and from to CIDOC CRM and SKOSified

    Original URL path: http://www.dcu.gr/index.php?p=publications&lang=en§ion=0&id=60 (2016-02-15)
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  • Digital Curation Unit
    working practices to broaden the scope of and opportunities for research through the interconnection of various distributed digital resources and to promote the access use creation and long term preservation of research data both primary and secondary in digital form DYAS is also charged to operate as the Greek component of the European Infrastructure for Arts and Humanities DARIAH DYAS is designed as a distributed infrastructure with members at distinct levels of involvement management nodes providing the services of the infrastructure and setting the specifications for digital resources currently the Academy of Athens and the DCU R C Athena curators responsible for specific collections and added value repositories affiliates providing selected metadata for ingestion by the management nodes In addition to members external users can subscribe to specific services of the network thus widely offering the benefits of DYAS and DARIAH services to researchers educators and collection managers By promoting standards interoperability frameworks common practices authorities and services DYAS intends to foster multidisciplinary activities and to establish links with thematic infrastructures such as ARIADNE The services being developed by DYAS fall in four groups 1 sharing digital resources through a set of data person metadata vocabulary and software registries 2

    Original URL path: http://www.dcu.gr/index.php?p=publications&lang=en§ion=0&id=61 (2016-02-15)
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  • Digital Curation Unit
    user requirements of historians humanities scholars and social scientists working on the Holocaust The results of the study will be a foundation for the specification of functionalities of the European digital infrastructure planned as part of the EU funded European Holocaust Research Infrastructure project and consisting of the EHRI search portal and the EHRI Virtual Research Environment Particular issues to be dealt with are the summarization of qualitative evidence from

    Original URL path: http://www.dcu.gr/index.php?p=publications&lang=en§ion=0&id=58 (2016-02-15)
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  • Digital Curation Unit
    ranking component considers not only the overall quality of the rules that produced each candidate but also the extent to which they preserve grammaticality and meaning in the particular context of the input sentence as well as the degree to which the candidate differs from the input We experimented with both a Maximum Entropy classifier and an SVR ranker Experimental results show that incorporating features from an existing paraphrase recognizer

    Original URL path: http://www.dcu.gr/index.php?p=publications&lang=en§ion=0&id=43 (2016-02-15)
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  • Digital Curation Unit
    Original location URL Abstract Sentence compression has attracted much interest in recent years but most sentence compressors are extractive i e they only delete words There is a lack of appropriate datasets to train and evaluate abstractive sentence compressors i e methods that apart from deleting words can also rephrase expressions We present a new dataset that contains candidate extractive and abstractive compressions of source sentences The candidate compressions are

    Original URL path: http://www.dcu.gr/index.php?p=publications&lang=en§ion=0&id=44 (2016-02-15)
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