【作者】 李艳；

【导师】 吴彦文；

【作者基本信息】 华中师范大学 ， 教育技术学， 2006， 硕士

【摘要】 现阶段的网络教学中为学习者提供学习导航服务在赋予网络教学巨大优势的同时也不可避免地存在着一些不足之处,尤其是在个性化的导航方面。因此,基于网络教学导航技术的现状,我们对“网络教学中知识点网络的个性化呈现”进行了研究。 本文分析了知识点网络个性化呈现的设计原则,设计思想,并基于这些设计原则与设计思想,对知识点网络的个性化呈现的结构和流程进行了设计;接着,通过分析领域知识的层次结构,包括知识点的划分、知识点属性的描述和知识点关系的描述,采用语义网络模型来表示领域知识的网状结构,呈现领域知识的结构化关系,设计了知识点网络模型;分析了学习者的认知水平特征;在知识点网络模型与学习者认知水平的基础上,依托ISM法的基本思想,提出个性化知识点网络的生成算法,通过学习背景矩阵与可达矩阵的运算,将学习者认知水平考虑进去,生成符合学习者个人认知水平的知识点网络结构关系。最后,采用ASP+VML技术开发了B/S模式下的知识点网络的个性化呈现系统,为网络教学中的学习者提供了可视化领域知识结构的Web化阅读环境。本文所做的研究具有一定的意义,可以应用于网络教学的导航服务中。更多还原

【Abstract】 There are huge advantages for network teaching to provide navigation service. But some deficiencies inevitably existed at the same time, especially on the aspect of individualized navigation. So, based on the current situation of navigation technology of network teaching, the thesis has studied the "individualized presentation of knowledge network in network teaching".The thesis analyzed the design principle and philosophy of individualized presentation of knowledge network. Based on these, the structure and flow of individualized presentation of knowledge network were designed. Then the hierarchical structure of domain knowledge was analyzed which included the division of knowledge point, the description of knowledge point attribute and knowledge point relationship. The semantic network model was adopted to represent the net structure and the relationship of domain knowledge. Based on these, the knowledge network model was designed. Learner’s cognition level was analyzed. Based on the knowledge network model, the learner’s cognition level and the ISM method, the generation algorithm of individualized knowledge network is proposed, through the calculation of background matrix and reachable matrix, and take into consideration of cognition level of learner, the knowledge network structural relationship that conform to the individual cognition level of learner was generated. Finally, the individualized presentation system of knowledge network under B/S was developed using ASP+VML technology. It provides the Web reading environment of knowledge structure in visualized field for learners in network teaching. The research has certain significance. It could be applied in the navigation service in network teaching.更多还原