Semantic Web Technologies for Digital Libraries: From Libraries to Social Semantic Digital Libraries (SSDL), Over Semantic Digital Libraries (SDL)

Digital libraries have been an important source of information throughout the history of mankind. It has been present in our societies in different forms. Notably, traditional libraries have found their on the desktops of internet users. They have taken the shape of semantic digital libraries, which are accessible at any time, and accordingly provide a more meaningful search. This paper further discusses social semantic digital libraries that also incorporate the social and collaborative aspect

PENERAPAN SEMANTIC WEB DAN SEMANTIC SEARCH PADA DIGITAL LIBRARY ONLINE PUBLIC ACCESS CATALOG (DIGILIB-OPAC) UNTUK MENINGKATKAN EFEKTIVITAS PENCARIAN

OPAC atau Online Public Access Catalog adalah fasilitas pencarian yang selalu ada pada sistem digital library. Perannya menjadi penting ketika user ingin mencari dokumen digital yang tersimpan. Namun, hasil observasi menunjukkan bahwa Digilib OPAC menunjukkan nilai precision rasio yang cukup rendah. Hal ini mengindikasikan bahwa hasil pencarian yang ditampilkan kurang relevan dengan yang diharapkan oleh user. Fasilitas pencarian dengan teknologi semantic web dan semantic search diterapkan untuk mengatasi permasalahan relevansi hasil pencarian. Ontologi dan penggunaan metadata pada penerapan semantic web memberikan kesamaan pemahaman makna kata antara mesin dan user. Kemudian penerapan aturan pengolahan bahasa dan aturan query SWRL pada semantic search menjadikan sistem mampu memahami keyword ataupun kalimat yang diinputkan oleh user dan memberikan hasil pencarian yang lebih relevan terhadap keinginan user. Hasil pengujian sistem pencarian terhadap sejumlah kalimat pencarian, menunjukkan nilai precision rasio dan recall rasio yang sama besar, yaitu 1 : 1. Hal inimemperlihatkan bahwa fasilitas pencarian yang dikembangkan pada digilib-opac mampu memberikan hasil pencarian yang efektif atau lebih relevan terhadap yang diinginkan oleh user

E-resource management and the Semantic Web : applications of RDF for e-resource discovery

Semantic Web technologies and specifications are increasingly finding applications within digital libraries and other e-resource contexts. The purpose of this chapter is to provide an introduction to some essential Semantic Web concepts and the resource description framework (RDF), a key enabling language of the Semantic Web. Applications of RDF including Dublin Core, FOAF, SKOS and RDFa will be explored with practical examples, and recent implementations of these specifications within a variety of e-resource discovery contexts will be discussed

Resource discovery in heterogeneous digital content environments

The concept of 'resource discovery' is central to our understanding of how users explore, navigate, locate and retrieve information resources. This submission for a PhD by Published Works examines a series of 11 related works which explore topics pertaining to resource discovery, each demonstrating heterogeneity in their digital discovery context. The assembled works are prefaced by nine chapters which seek to review and critically analyse the contribution of each work, as well as provide contextualization within the wider body of research literature. A series of conceptual sub-themes is used to organize and structure the works and the accompanying critical commentary. The thesis first begins by examining issues in distributed discovery contexts by studying collection level metadata (CLM), its application in 'information landscaping' techniques, and its relationship to the efficacy of federated item-level search tools. This research narrative continues but expands in the later works and commentary to consider the application of Knowledge Organization Systems (KOS), particularly within Semantic Web and machine interface contexts, with investigations of semantically aware terminology services in distributed discovery. The necessary modelling of data structures to support resource discovery - and its associated functionalities within digital libraries and repositories - is then considered within the novel context of technology-supported curriculum design repositories, where questions of human-computer interaction (HCI) are also examined. The final works studied as part of the thesis are those which investigate and evaluate the efficacy of open repositories in exposing knowledge commons to resource discovery via web search agents. Through the analysis of the collected works it is possible to identify a unifying theory of resource discovery, with the proposed concept of (meta)data alignment described and presented with a visual model. This analysis assists in the identification of a number of research topics worthy of further research; but it also highlights an incremental transition by the present author, from using research to inform the development of technologies designed to support or facilitate resource discovery, particularly at a 'meta' level, to the application of specific technologies to address resource discovery issues in a local context. Despite this variation the research narrative has remained focussed on topics surrounding resource discovery in heterogeneous digital content environments and is noted as having generated a coherent body of work. Separate chapters are used to consider the methodological approaches adopted in each work and the contribution made to research knowledge and professional practice.The concept of 'resource discovery' is central to our understanding of how users explore, navigate, locate and retrieve information resources. This submission for a PhD by Published Works examines a series of 11 related works which explore topics pertaining to resource discovery, each demonstrating heterogeneity in their digital discovery context. The assembled works are prefaced by nine chapters which seek to review and critically analyse the contribution of each work, as well as provide contextualization within the wider body of research literature. A series of conceptual sub-themes is used to organize and structure the works and the accompanying critical commentary. The thesis first begins by examining issues in distributed discovery contexts by studying collection level metadata (CLM), its application in 'information landscaping' techniques, and its relationship to the efficacy of federated item-level search tools. This research narrative continues but expands in the later works and commentary to consider the application of Knowledge Organization Systems (KOS), particularly within Semantic Web and machine interface contexts, with investigations of semantically aware terminology services in distributed discovery. The necessary modelling of data structures to support resource discovery - and its associated functionalities within digital libraries and repositories - is then considered within the novel context of technology-supported curriculum design repositories, where questions of human-computer interaction (HCI) are also examined. The final works studied as part of the thesis are those which investigate and evaluate the efficacy of open repositories in exposing knowledge commons to resource discovery via web search agents. Through the analysis of the collected works it is possible to identify a unifying theory of resource discovery, with the proposed concept of (meta)data alignment described and presented with a visual model. This analysis assists in the identification of a number of research topics worthy of further research; but it also highlights an incremental transition by the present author, from using research to inform the development of technologies designed to support or facilitate resource discovery, particularly at a 'meta' level, to the application of specific technologies to address resource discovery issues in a local context. Despite this variation the research narrative has remained focussed on topics surrounding resource discovery in heterogeneous digital content environments and is noted as having generated a coherent body of work. Separate chapters are used to consider the methodological approaches adopted in each work and the contribution made to research knowledge and professional practice

Semantically enhanced search services in digital libraries

During the last years more and more information has been published on the Web. Digital libraries provide high quality and well-organised information. But this data is often not connected with other pools on information such as personal homepages of authors. Within the Semantic Web, connecting the semantic meaning of the pieces of information is the challenge. In this paper we present JeromeDL, an open source digital library system which takes users ’ profiles into account as one of the semantically-enriched information sources to expand the queries. 1