Research On Knowledge Map Construction In The Field Of Educational Technology

In the current process of learning and research on disciplines, someone always capture unclear issues about the development of disciplines in the context of knowledge, so this paper attempts to map the manifestation of knowledge, and establish a model of knowledge map in disciplines which based on the discipline of Educational Technology and can be extended to other disciplines, form some methods and analytical ways to construct and analyze knowledge map of disciplines, in a more general sense to realize the auto knowledge map system through technical means. So we decompose the problem into for sub-questions to be addressed:(1) What is the knowledge map in disciplines, which elements it should be constituted?(2) How to construct a knowledge map model in disciplines?(3) Educational Technology, for example, how to analyze and interpret the knowledge map based on the model?(4) The use of analytical data generated in the field of Educational Technology, how to form the automated knowledge map environment through the technological means?First, this paper argues that the knowledge map in disciplines should be a time dimension as the basis, respectively, from a knowledge of the distribution of scattered point clustering, network development and changes in diameter, node degree distribution, figure density development and changes in other aspects to consider drawing on a particular subject area multiple knowledge Map-we call it "fat knowledge Map"Secondly, the knowledge map model in disciplines is oriented to construct and grasp the development and rationalization of academic knowledge, based on the summary and analysis of previous knowledge map model, the system model is divided into eight parts, they are:"select the subject knowledge"-"data collection"-" data cleansing"-"matrix construction""knowledge map drawing"-"Measurement and analysis of knowledge map"-"feedback data"-"subject knowledge structure analysis and knowledge mobility trends forecast"Then, Educational Technology, for example, according to the system model theory, the formation of "fat knowledge map" about the discipline of Educational Technology, and the main use of social network analysis method to analyze and interpret knowledge map. For a clear distinction between domestic and international in the subject areas of development, the paper only from the aspect of scattered points clustering analysis of knowledge to analyze.Finally, form the data of the relationship in educational technology discipline based on the above analysis, and through the data mining, production theory of cognitive psychology-ACT-R and J2EE+Flex way to form the auto knowledge map system platform.