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Auflistung nach Schlagwort "Digital humanities"

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  • Textdokument
    Explicating knowledge on data models through domain specific languages
    (INFORMATIK 2017, 2017) Gradl, Tobias; Henrich, Andreas
    Digital artifacts and metadata of the arts and humanities exhibit a wide spectrum of formats, structures and contexts, and hence a high level of heterogeneity. With particular respect of the characteristics of the application domain, we propose a concept on the basis of formal languages, which allows the separation of technical and contextual aspects of data modeling. Based on a developed framework, domain experts explicate knowledge about data in terms of domain specific languages and derived transformation functions. Independent of actual technical aspects of data transformation and integration (e.g. formats, access protocols, schema languages), experts of particular disciplines, collections or research questions can describe and define data models and relations in an extensive, declarative fashion—utilizing custom data models or standards as applicable. As implicit knowledge is continuously explicated within the data models, interpretations external to the generative context of data are facilitated—thereby promoting interoperability.
  • Zeitschriftenartikel
    The Hydra.PowerGraph System
    (Datenbank-Spektrum: Vol. 17, No. 2, 2017) Meyer, Holger; Schering, Alf-Christian; Heuer, Andreas
    Directed hypergraphs are known from graph theory [11] and are well understood within their own domain [7–9, 22, 23]. This paper provides an overview on the expressiveness of directed and typed hypergraphs as a modeling paradigm not only for the content of digital libraries and archives but a variety of applications. Furthermore, hypergraphs are sufficiently expressive to provide an implementation logic for conceptual models like CIDOC/CRM [18] in the context of museum-related systems and digital archives.The directed hypergraph model supports typed nodes and individual flexible sets of attributes on a per node type basis. This allows for efficient mapping on object-relational database structures. It also features a flexible, semi-structured type system for hyperedges. The graph model is accompanied by a set of well defined graph operations forming an algebra and a descriptive hypergraph query language GrafL. This language supports typed, structure and value based queries as well as fundamental graph algorithms.The suitability of such a hypergraph-based model is illustrated with a large digital ethnological archive system, which is developed in the WossiDiA project [43, 52, 53].