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Semantic overlays in educational content networks - the hylOs approach

机译：教育内容网络中的语义叠加-hylOs方法

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Purpose - The paper, aims to introduce an educational content management system Hypermedia Learning Objects System (hylOs), which is fully compliant to the IEEE LOM eLearning object metadata standard. Enabled through an advanced authoring toolset, hylOs allows the definition of instructional overlays of a given eLearning object mesh. Design/methodology/approach - In educational content management, simple file distribution is considered insufficient. Instead, IEEE LOM standardised eLearning objects have been well established as the basic building blocks for educational online content. They are nicely suited for self-explorative learning approaches within adaptive hypermedia applications. Even though eLearning objects typically reside within content repositories, they may propagate metadata relations beyond repository limits. Given the explicit meaning of these interobject references, a semantic net of content strings can be knotted, overlaying the repository infrastructure. Findings - Based on a newly introduced ontological evaluation layer, meaningful overlay relations between knowledge objects are shown to derive autonomously. A technology framework to extend the resulting semantic nets beyond repository limits is also presented. Research limitations/implications - This paper provides proof of concept for the derivation and use of semantic content networks in educational hypermedia. It thereby opens up new directions for future eLearning technologies and pedagogical adoption. Practical implications - The paper illustrates capabilities of the hylOs eLearning content management The hylOs is built upon the more general Media Information Repository (MIR) and the MIR Adaptive Context Linking Environment (MIRaCLE): its linking extensioa MIR is an open system supporting the standard XML, CORBA and JNDI. hylOs benefits from manageable information structures, sophisticated access logic and high-level authoring tools like the eLO editor responsible for the semi-manual creation of meta data and WYSIWYG like XML-content editing, allowing for rapid distributed content development Originality/value - Over the last few years, networking technologies and distributed information systems have moved up the OSI layer and are established well within application-centric middleware. Most recently, content overlay networks have matured, incorporating the semantics of data files into their self-organisational structure with the aim of optimising data-centric distributed indexing and retrieval. This paper elaborates a corresponding concept of semantic structuring for educational content objects. It introduces and analyses the autonomous generation and educational exploitation of semantic content nets, providing proof of concept by a full-featured implementation within the hylOs educational content management system.
机译：目的-本文旨在介绍一种教育内容管理系统超媒体学习对象系统（hylOs），该系统完全符合IEEE LOM电子学习对象元数据标准。通过高级创作工具集启用的hylO允许定义给定的eLearning对象网格的指导性覆盖图。设计/方法/方法-在教育内容管理中，简单的文件分发被认为不足。取而代之的是，IEEE LOM标准化的eLearning对象已被很好地确立为在线教育内容的基本组成部分。它们非常适合于自适应超媒体应用程序中的自我探索学习方法。尽管电子学习对象通常位于内容存储库中，但它们可能会传播元数据关系超出存储库限制。给定这些对象间引用的显式含义，可以打结内容字符串的语义网，覆盖存储库基础结构。发现-基于新引入的本体评估层，显示了知识对象之间有意义的重叠关系，可以自动得出。还提出了一种技术框架，以将结果语义网扩展到存储库限制之外。研究局限性/意义-本文为教育超媒体中语义内容网络的派生和使用提供了概念证明。因此，它为未来的电子学习技术和教学采用开辟了新的方向。实际的意义-本文说明了hylOs电子学习内容管理的功能hylOs建立在更通用的媒体信息库（MIR）和MIR自适应上下文链接环境（MIRaCLE）上：其链接扩展MIR是一个支持标准XML的开放系统，CORBA和JNDI。 hylOs受益于可管理的信息结构，复杂的访问逻辑和高级创作工具，例如负责半手动创建元数据的eLO编辑器，以及XML内容编辑等WYSIWYG，从而实现了快速的分布式内容开发原创性/价值最近几年，网络技术和分布式信息系统已经在OSI层上发展，并已在以应用程序为中心的中间件中很好地建立起来。最近，内容覆盖网络已经成熟，将数据文件的语义纳入其自组织结构中，以优化以数据为中心的分布式索引和检索。本文阐述了教育内容对象的语义结构的相应概念。它介绍并分析了语义内容网的自主生成和教育利用，并通过hylOs教育内容管理系统中的功能全面的实现提供了概念验证。

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