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2007
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| |  | Jovanovic, Jelena | Ontologies for Effective Use of Context in e-Learning Settings read moreAbstract: This paper presents an ontology-based framework aimed at explicit representation of context-specific metadata
derived from the actual usage of learning objects and learning designs. The core part of the proposed framework
is a learning object context ontology, that leverages a range of other kinds of learning ontologies (e.g., user
modeling ontology, domain ontology, and learning design ontology) to capture the information about the real
usage of a learning object inside a learning design. We also present some learner-centered and teacher-centered
scenarios enabled by the proposed framework in order to illustrate the benefits the framework offers to these key
participants of any learning process. Finally, we demonstrate how two present educational tools (i.e.
TANGRAM and LOCO-Analyst) correspond to the proposed architecture | 2007 |
2006
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| | | Sanchez-Alonso, Salvador | Ontologies and Contracts in the Automation of Learning Object Management System read moreAbstract: Current standardized e-learning systems are centred on the concept of learning object. Unfortunately, specifications and standards in the field do not provide details about the use of well-known knowledge representations for the sake of automating some processes, like selection and composition of learning objects, or adaptation to the user or platform. Precise usage specifications for ontologies in e-learning would foster automation in learning systems, but this requires concrete, machine-oriented interpretations for metadata elements. This chapter focuses on ontologies as shared knowledge representations that can be used to obtain enhanced learning object metadata records in order to enable automated or semi-automated consistent processes inside Learning Management Systems. In particular, two efforts towards enhancing automation are presented: a contractual approach based on pre- and post-conditions, and the so-called process conformance profiles. | 2006 |
2005
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| | | Agarwal, P. | Ontological considerations in GIScience read moreAbstract: Ontology is a significant research theme in GIScience. While some researchers believe that the progress in GIScience is being directed through an engagement with the concept of ontology, some dismiss it as irrelevant. This paper is aimed at (i) exploring the theoretical and practical roles of ontologies; (ii) making the definitions and terminology explicit; (iii) assessing the applicability of ontology to problems in the geographical domain; and (iv) assessing whether a unified approach to ontology exists in GIScience. The results will be helpful for GIScientists in (i) understanding the validity of employing ontology within their own work, (ii) assessing what operational framework of terms and methods to use for developing their own ontology, and (iii) to assess what existing ontological models are available and applicable within their domain or application. A comprehensive and critical review will also help in identifying the signficant issues and directing future research agenda in GIScience. | 2005 |
2004
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| | | Bennacer, N. | Formalizing for querying learning objects using OWL read moreAbstract: The World Wide Web offers an increasing amount of complex and rich educational Web resources that are available for free in various domains. Unfortunately, it is difficult today to have a Web agent that answers precisely a simple query. Semantic Web aims to make Web resources meaningful to automated agents. Ontologies are proposed to provide a formal representation of a shared and common conceptualization of a specific domain. For the description of educational resources several communities are working on the definition of metadata elements. The Learning Technology Standards Committee (LTSC) specifies the Learning Object Metadata (LOM), a set of elements describing the relevant characteristics for learning resources. The goal of this paper is to give a formal and more comprehensive content description of learning resources in order to allow better reusability and retrievals. This description is particularly focused on the semantic relationships between learning resources which constitute an important aspect to access information. It uses OWL, an ontology language for the semantic Web, recently developed by the W3C. OWL provides powerful expressiveness combined with desirable computational properties for reasoning systems due to its correspondence with description logics. The query of the corresponding knowledge base is illustrated using OWL Query Language OWL-QL. | 2004 |
| | | Brockmans, S. | Visual Modeling of OWL DL Ontologies Using UML read moreAbstract: This paper introduces a visual, UML-based notation for OWL ontologies. We provide a standard MOF2 compliant metamodel which captures the language primitives offered by OWL DL. Similarly, we invent a UML profile, which allows to visually model OWL ontologies in a notation that is close to the UML notation. This allows to develop ontologies using UML tools. Throughout the paper, the significant differences to some earlier proposals for a visual, UML-based notation for ontologies are discussed. | 2004 |
2002
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| | | Feasey, David | Meaning, Meta Data and E-Learning read moreAbstract: This white paper analyzes some of the
reasons why e-learning has failed, thus far, to
deliver on its promise of anytime, anywhere
learning. We focus on online self-study
courseware as the best example of e-learning
content implementation to date and uncover
some underlying challenges to adoption of
initiatives such as interactivity, a learning-
and learner-centered model, learning objects,
the emerging e-learning standards and the
use of metadata to solve the search and
retrieval problem. We recommend a renewed
focus on ontologies as machine
representations of knowledge domains, and
a blended meta data management model as
critical parts of an emerging e-learning
infrastructure. | 2002 |
2001
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| | | Fabrikant, S. I. | Building Task-Ontologies for GeoVisualization read moreAbstract: Sorry no abstract available for this article | 2001 |
2000
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| | | Fonseca, F. | Ontologies and Knowledge Sharing in Urban GIS read moreAbstract: Sorry no abstract available for this article | 2000 |
| | | Shum, Simon | ScholOnto: an ontology-based digital library server for research documents and discourse read moreAbstract: The internet is rapidly becoming the first place for researchers to publish documents, but at present they receive little support in searching, tracking, analysing or debating concepts in a literature from scholarly perspectives. This paper describes the design rationale and implementation of ScholOnto, an ontology-based digital library server to support scholarly interpretation and discourse. It enables researchers to describe and debate via a semantic network the contributions a document makes, and its relationship to the literature. The paper discusses the computational services that an ontology-based server supports, alternative user interfaces to support interaction with a large semantic network, usability issues associated with knowledge formalisation, new work practices that could emerge, and related work. | 2000 |
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