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Development of Advanced Web Data Houses and its Application to Education Systems

先进网络数据屋的开发及其在教育系统中的应用

基本信息

批准号：
15200009
负责人：
OGINO Hiroyuki
金额：
$ 32.28万
依托单位：
Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

Education systems utilizing the Web have been attracting attentions. By the increase of the volume of education contents and students, the efficiency of processing data becomes a problem. We have been proposing and developing web warehouses for efficient web information processing. In this research, we designed web warehouses from the point of views of education applications, and conducted a series of researches for developing necessary functionalities for the web warehouse and application systems, as summarized below :Web-base contents for environment education : For supporting environment education in field situations, we developed a system to collect various observation data, such as text, images from digital cameras and location information obtained by GPS, and assembles them into web contents. The system was demonstrated in EXPO2005.Teacher-assistance mechanism for web-based self-learning system utilizing operation histories : We developed a web-based self-learning system, which p … More resents questions and records answers through web interface, and we applied the system in high-school supplementary classes. The system's feature is a recoding mechanism which records all the operations by students on PCs, and these records can be analyzed from various point of views, such as answering orders, answering time, hints referred by students, correctness of answers. Through the visualization of record analysis, teachers can evaluate performance of students.Access control of web warehouses : A web warehouse accumulates huge data as the time passes, and it is necessary to build an access control model for the data on web warehouses, where semantics of web warehouses, such as version derivation, content structure, and timestamps, need to be incorporated. We developed a new model which fits these requirements, and we also showed evaluation algorithms.Detecting anomalies of web servers : It is becoming a serious problem that web servers are heavily attacked by unknown adversaries for taking over or sabotaging the server. We have developed a system to visualize web access logs for detecting suspicious activities, utilizing data mining methodologies. Less

利用Web的教育系统已经引起了人们的关注。随着教育内容和学生数量的增加，数据处理的效率成为一个问题。我们一直在提出和开发Web仓库，以实现高效的Web信息处理。在本研究中，我们从教育应用的角度设计了Web仓库，并进行了一系列的研究，以开发Web仓库和应用系统所需的功能，总结如下：环境教育的Web库内容：为了支持现场环境教育，我们开发了一个系统来收集各种观察数据，如文本，从数码相机的图像和GPS获得的位置信息，并将它们组合成网络内容。基于操作历史的网络自主学习系统的教师辅助机制：开发了一个基于操作历史的网络自主学习系统，该系统具有较好的学习效果和较强的交互性 ...更多信息通过网络界面提交问题并记录答案，并将该系统应用于高中补习班。该系统的特点是一个记录机制，记录所有的操作，由学生在PC上，这些记录可以从不同的角度进行分析，如回答顺序，回答时间，提示由学生提到的，答案的正确性。Web仓库的访问控制：Web仓库随着时间的推移积累了大量的数据，需要为Web仓库上的数据建立访问控制模型，其中需要包含Web仓库的语义，如版本派生、内容结构、时间戳等。我们开发了一个新的模型，它符合这些要求，我们也显示了评估算法。检测异常的Web服务器：它正在成为一个严重的问题，Web服务器受到严重攻击的未知对手接管或破坏服务器。我们已经开发了一个系统来可视化Web访问日志检测可疑活动，利用数据挖掘方法。少