IEEE Transactions on Knowledge and Data Engineering, 2003
AbstractInformation searching by exactly matching content is traditionally a strong point of mach... more AbstractInformation searching by exactly matching content is traditionally a strong point of machine searching; this is not, however, how human memory works and is rarely satisfactory for advanced retrieval tasks in any domainmultimedia in particular, where the presentational aspects ...
Organised units of interactive multimedia material, called titles, are becoming rapidly available... more Organised units of interactive multimedia material, called titles, are becoming rapidly available beyond their original format, namely Compact Disks, and they appear in Digital Libraries and on the Web. For large collections of such titles, browsers and query mechanisms ...
The notion of using video as an instructional medium to support learning is not new, although the... more The notion of using video as an instructional medium to support learning is not new, although the use of video in class as a pedagogical instrument of active learning is still in the beginning. Quite a few on-line educational video clip libraries are already in existence containing a significant number of high-quality, professionally produced educational video clips. Extensive work has also been done in the educational technology domain and both the Learning Content Management System (LCMS), and educational software markets can be considered mature. On the other hand, the power of participation, creation and sharing has led to a large number of user-generating educational video sharing and social networking sites.
This paper presents Photodentro LOR, the Greek National Learning Object Repository (LOR) for prim... more This paper presents Photodentro LOR, the Greek National Learning Object Repository (LOR) for primary and secondary education. Photodentro LOR hosts open learning objects: small, semantically and functionally autonomous, reusable, open educational resources, tagged with educational metadata. It is targeted to teachers and pupils and it constitutes a core part of the Greek Ministry of Education digital infrastructure for educational content for schools. The paper also discusses issues to be taken into account when designing a National Learning Object Repository for schools, and provides an overview of the Photodentro LOR design and implementation, including semantic interoperability and metadata issues, technical decisions, and workflows for content population. The big picture of the infrastructure that includes the Photodentro National Educational Content Aggregator is also given.
Organised units of interactive multimedia material, called "titles", are becoming rapidly availab... more Organised units of interactive multimedia material, called "titles", are becoming rapidly available beyond their original format, namely Compact Disks, and they appear in Digital Libraries and on the Web. For large collections of such titles, browsers and query mechanisms addressing the multimedia assets alone while reasonably well developed are inadequate: we lack techniques for efficient generic retrieval of structured multimedia information. In this paper we present the notion of conceptual title abstractions, a representation of one or more titles that captures and abstracts at a variable level of detail the structure, interactivity and generic content of the represented titles. We develop an algebra for title abstractions -which form a partial order-and present a language which can be used for specifying and abstracting titles. A straightforward extension of the language can be used to query databases of title abstractions, and indirectly very large repositories of organised interactive multimedia material. Examples taken from applied projects illustrate the approach, as the language was originally developed for the specification and production of multimedia titles in series.
IEEE Transactions on Knowledge and Data Engineering, 2003
AbstractInformation searching by exactly matching content is traditionally a strong point of mach... more AbstractInformation searching by exactly matching content is traditionally a strong point of machine searching; this is not, however, how human memory works and is rarely satisfactory for advanced retrieval tasks in any domainmultimedia in particular, where the presentational aspects ...
IEEE Transactions on Knowledge and Data Engineering, 2003
AbstractInformation searching by exactly matching content is traditionally a strong point of mach... more AbstractInformation searching by exactly matching content is traditionally a strong point of machine searching; this is not, however, how human memory works and is rarely satisfactory for advanced retrieval tasks in any domainmultimedia in particular, where the presentational aspects ...
Organised units of interactive multimedia material, called titles, are becoming rapidly available... more Organised units of interactive multimedia material, called titles, are becoming rapidly available beyond their original format, namely Compact Disks, and they appear in Digital Libraries and on the Web. For large collections of such titles, browsers and query mechanisms ...
The notion of using video as an instructional medium to support learning is not new, although the... more The notion of using video as an instructional medium to support learning is not new, although the use of video in class as a pedagogical instrument of active learning is still in the beginning. Quite a few on-line educational video clip libraries are already in existence containing a significant number of high-quality, professionally produced educational video clips. Extensive work has also been done in the educational technology domain and both the Learning Content Management System (LCMS), and educational software markets can be considered mature. On the other hand, the power of participation, creation and sharing has led to a large number of user-generating educational video sharing and social networking sites.
This paper presents Photodentro LOR, the Greek National Learning Object Repository (LOR) for prim... more This paper presents Photodentro LOR, the Greek National Learning Object Repository (LOR) for primary and secondary education. Photodentro LOR hosts open learning objects: small, semantically and functionally autonomous, reusable, open educational resources, tagged with educational metadata. It is targeted to teachers and pupils and it constitutes a core part of the Greek Ministry of Education digital infrastructure for educational content for schools. The paper also discusses issues to be taken into account when designing a National Learning Object Repository for schools, and provides an overview of the Photodentro LOR design and implementation, including semantic interoperability and metadata issues, technical decisions, and workflows for content population. The big picture of the infrastructure that includes the Photodentro National Educational Content Aggregator is also given.
Organised units of interactive multimedia material, called "titles", are becoming rapidly availab... more Organised units of interactive multimedia material, called "titles", are becoming rapidly available beyond their original format, namely Compact Disks, and they appear in Digital Libraries and on the Web. For large collections of such titles, browsers and query mechanisms addressing the multimedia assets alone while reasonably well developed are inadequate: we lack techniques for efficient generic retrieval of structured multimedia information. In this paper we present the notion of conceptual title abstractions, a representation of one or more titles that captures and abstracts at a variable level of detail the structure, interactivity and generic content of the represented titles. We develop an algebra for title abstractions -which form a partial order-and present a language which can be used for specifying and abstracting titles. A straightforward extension of the language can be used to query databases of title abstractions, and indirectly very large repositories of organised interactive multimedia material. Examples taken from applied projects illustrate the approach, as the language was originally developed for the specification and production of multimedia titles in series.
IEEE Transactions on Knowledge and Data Engineering, 2003
AbstractInformation searching by exactly matching content is traditionally a strong point of mach... more AbstractInformation searching by exactly matching content is traditionally a strong point of machine searching; this is not, however, how human memory works and is rarely satisfactory for advanced retrieval tasks in any domainmultimedia in particular, where the presentational aspects ...
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Papers by Megalou Elina