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A Digital Library Framework for Reusing e-Learning Video Documents

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The objective of this paper is to demonstrate the reuse of digital content, as video documents or PowerPoint presentations, by exploiting existing technologies for automatic extraction of metadata (OCR, speech recognition, cut detection, MPEG-7 visual descriptors, etc.). The multimedia documents and the extracted metadata are then indexed and managed by the Multimedia Content Management System (MCMS) MILOS, specifically developed to support design and effective implementation of digital library applications. As a result, the indexed digital material can be retrieved by means of content based retrieval on the text extracted and on the MPEG-7 visual descriptors (via similarity search), assisting the user of the e-Learning Library (student or teacher) to retrieve the items not only on the basic bibliographic metadata (title, author, etc.).
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... Educational multimedia systems, can benefit of the progress in multimedia capture, analysis, and delivery, combined with the rapid adoption of broadband communication. In addition, new trends in multimedia technology, such as multimedia delivery on hand-held devices or advanced approaches for the automatic analysis of multimodal signals, offer novel opportunities for teaching and learning [32], [33]. Another topic of interest concerns Video-on-Demand (VOD) systems [34] in which users can obtain the teaching materials through the network by using a computer or a television with a Set-Top-Box. ...
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The adoption of the peer-to-peer (p2p) communication paradigm to enhance e-learning applications has been already proposed. However, advancements both in the knowledge society and p2p applications, allow to further push such joint utilization. The contribution of this paper is to survey the exploitation of p2p technologies within e-learning environments, as well as to investigate the open issues to bring distributed platforms to the next step. In addition, this work also introduces a general framework, based on BitTorrent, to support the delivery of Learning Objects.
... dibincangkan oleh penyelidik dalam bidang e-pembelajaran adalah guna semula objek pembelajaran [1][2][3][4][5]. Terdapat pelbagai repositori objek pembelajaran di Web seperti MERLOT, ARIADNE, SMETE & CAREO, namun repositori ini hanya membenarkan capaian dilaksanakan pada objek pembelajaran dalam bentuk kandungan yang besar seperti satu kandungan pengajaran [6][7]. ...
Article
Perkembangan e-pembelajaran masa kini telah mewujudkan beberapa repositori objek pembelajaran di Web yang menyediakan bahan pembelajaran yang boleh dicapai oleh pengguna pada bila-bila masa. Bahan pembelajaran ini seharusnya boleh dikongsi serta digunakan semula untuk pembinaan bahan pembelajaran dalam konteks yang berlainan. Namun pembangun sering menghadapi kesukaran untuk mengguna semula bahan pembelajaran dalam repositori ini kerana kebanyakan bahannya adalah dalam bentuk satu kandungan kursus yang besar. Kajian mencadangkan rangka kerja objek pembelajaran boleh guna semula yang melaksanakan proses pengranularan dan proses guna semula objek pembelajaran. Pengranularan yang dicadangkan terdiri daripada tiga proses utama iaitu pengekstrakan, pemilihan dan penkategorian objek pembelajaran serta penganotasian metadata. Kaedah ini telah berjaya menukarkan satu kandungan kursus yang besar kepada objek pembelajaran yang kecil seperti teks dalam perenggan, imej dan animasi. Seterusnya pengujian boleh guna semula menggunakan kaedah metrik guna semula dalam bidang kejuruteraan perisian, empat jenis metrik untuk mengukur tahap guna semula telah dirumus iaitu Kaedah Berpemberat Sekelas, Gandingan Antara Objek, Kedalaman Pepohon Pewarisan dan Kaedah Jeleketan. Hasil uji kaji metrik mendapati tahap guna semula objek pembelajaran yang digranul adalah lebih tinggi berbanding dengan objek pembelajaran kasar. Ini menunjukkan bahawa objek pembelajaran ini lebih mudah untuk digunakan.
... Hier ist vor allem die MPEG-Standardfamilie zu nennen, die durch Standards zur Medienbeschreibung und -erschließung (MPEG-7, vgl. (Bolettieri, Falchi, Gennaro, & Rabitti, 2007; Hunter, 2002; Kosch, 2004) nergestützte Verfahren, die für die wissenschaftliche Multimediaproduktion genutzt werden. Die Einbettung interaktiven Multimediamaterials in wissenschaftliche Publikationen kann dabei als ein Sonderfall von Konvergenzphänomenen im Bereich der digitalen Medien gesehen werden. 2 Für nicht-textuelle Medien stellen digitale Speicherungs-und Nutzungsformen erstmals eine einfache Möglichkeit der Verfügbarmachung für eine breite wissenschaftliche Öffentlichkeit her. ...
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Die mittlerweile weit fortgeschrittene Digitalisierung der Medien im Allgemeinen und der wissenschaftlichen Publikationen im Besonderen zeigt bereits jetzt erheb-liche Konsequenzen im Bereich des Bibliothekswesens und der wissenschaftlichen Literaturversorgung. Bei gleichzeitiger quantitativer Zunahme veröffentlichter Information und qualitativer Ausdifferenzierung von Publikationsformaten ergeben sich für die Bibliotheken, die sich von der Dominanz der physischen Präsenz der Trägermedien wissenschaftlicher Information zu lösen beginnen, neue Aufgaben und Herausforderungen. Erste humorig-dystopische Entwürfe einer rein elektronischen wissenschaftlichen Bibliothek sind durch den Direktor des Molesworth Institute, Norman D. Stevens, vorgelegt worden ((Stevens, 2006), „The Fully Electronic Academic Library“). Michael Lesk, ein Pionier der digital libraries-Forschung, hat bereits 1995 – auf einem Symposium, das am Massachusetts Institute of Technology aus Anlass des 50järigen Jubiläums von Vannevar Bush’s „As we may think“ (Bush, 1991) stattfand – folgende Vision der zukünftigen bibliothekarischen Aufgaben formuliert: Will, in a future world of online information, the job of organizing information have higher status, whatever it is called? I am optimistic about this, by analogy with accountancy. Once upon a time accountants were thought of as people who were good at arithmetic. Nowadays calculators and computers have made arithmetical skill irrelevant; does this mean that accountants are unimportant? As we all know, the answer is the reverse and financial types are more likely to run corporations than before. So if computers make alphabetizing an irrelevant skill, this may well make librarians or their successors more important than before. If we think of information as a sea, the job of the librarian in the future will no longer be to provide the water, but to navigate the ship. (Lesk, 1995 [am Ende]) Vor diesem Hintergrund sollen nachfolgend zunächst die allgemeinen Rahmenbe-dingungen der fortschreitenden Digitalisierung für die wissenschaftliche Informa-tionsversorgung betrachtet werden (Kap. 2). Im Anschluss daran wird versucht, aufzuzeigen, wie wissenschaftliche Arbeits- und Publikationsformen in diesem Kontext sich verändern und welchen Beitrag Bibliothekare und Bibliotheken als Einrichtungen zur wissenschaftlichen Informationsversorgung leisten können (Kap. 3).
Chapter
The evolution of the Internet, distributed architectures, and Grid-oriented frameworks can change the way people acquire and disseminate both knowledge and experience, thus the way they learn. Therefore, one can envisage new e-learning models, based on a more efficient users' interaction, that also empowers the hands-on experience. This will improve learning outcomes, while reducing the need of physical devices and removing the inherent boundaries. Moreover, this reduces costs by promoting the sharing ...
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(Extended abstract) Abstract. This paper describes the architecture of the MILOS Content Management System. MILOS supports the storage and content based retrieval of any XML document, as well as multimedia documents whose descriptions are provided by using heterogenous metadata models represented in XML. MILOS is flexible in the management of documents containing different types of data and content descriptions; it is efficient and scalable in the storage and content based retrieval of these documents. The paper illustrates the solutions adopted to support the management of different metadata descriptions of multimedia documents in the same repository, and it illustrates the experiments performed by using the MILOS system to archive documents belonging to three different and heterogenous collections which contain news agencies, scientific papers, and audiovideo documentaries. 1
Ieee 1484.12.1-2002, draft standard for learning object metadata
  • I L T S Committee
Committee, I.L.T.S.: Ieee 1484.12.1-2002, draft standard for learning object metadata (2002), http://ltsc.ieee.org/wg12/index.html
Mpeg requirements group, mpeg-7 overview
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XML path language (XPath), version 1.0
  • W W W Consortium
Milos: a multimedia content management system for digital library applications
  • G Amato
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  • P Savino
  • F Rabitti
Amato, G., Gennaro, C., Savino, P., Rabitti, F.: Milos: a multimedia content management system for digital library applications. In: Heery, R., Lyon, L. (eds.) ECDL 2004. LNCS, vol. 3232, pp. 14-25. Springer, Heidelberg (2004)