Applied Research Of A Personalized Learning System Based On Web Services

The paper imported techniques like XML, SOAP, ASP.NET and etc, built and implemented a new personalized learning system based on Web Services and with the functions of web examining, web training and web answering. All system is divided into data-layer, service-layer and show-layer from bottom to top. Data-layer is composed of XML file and SQL Server 2000 database, the general acceptance of XML data storing ensured the reuse of test questions, SQL Server 2000 database has a good performance in collateral accessing of multi-user. Service-layer is implemented with Web Services, which is the center of next distributing system and has a quite wide use and foreground, in addition, Web Services ensured the modularization and sufficient expansibility of all system with the advantages of mutual operation, universality, easy using and industry sustaining. XML realized the separation between form and representation in show-layer, XML document is used to describe data and the relationships of data, XSL and CSS are used in representing the content of data, hence the same content can be showed with multiform representation according to actual requirement, this is also a solution to illogicality of the content structure and inconvenience brought by the indigence of representing mode.Individuation service engine collected personal information of users with an effective algorithm, the concept of Individuation service is applied in remote education, it is a effective solution to the contradiction between Individuation of students' requirement and simplification of learning resources. Having implemented individuation, Remote study will be a independent study with feedback mechanism, it enables the students to acquire teaching resources what they needed and improve interests of their study. Adaptive genetic algorithm is applied to extracting examinations, and has better performance and practicability. Adaptive training algorithm applying LOGISTIC model of single parameter can effectively evaluate the level of student. Intelligent question answering system based on XML reasoned using repository, it is a combinative technique of AI, information searches and disposal of nature language and so on, it has many advantages such as intelligence, opening and etc. The design of network learning system promotes the implement of diathesis education and a new mode of network teaching.