Design And Research About Class Discourse Analysis System On Information Technology Environment

With the information technology rapidly developed, the classroom teaching has shown some new features, such as:1) classroom discourse categories are increasing, a series of words is appeared when someone operates media or uses media to show something;2) percentage distribution of various types of discourse in the classroom has changed much as to traditional classrooms’;3) the way for teacher-student discourse interaction is more flexible;4) the teaching pattern is more rich and diverse than traditional class.Although new features are shown, teacher and student’s role remains unchanged. Teachers act as the organizers, guides, and helpers of the class. Discourse takes the majority part in the classroom behaviors. It is not only used to transmit information, but also used in organizing and feedback classroom. Thus, it has a great impact on improving teaching quality. Analyzing classroom discourse does contribute to guiding teaching in evaluation, and then make recommendations to improve the teaching quality.Now discourse analysis is used in the area of Linguistics, Pragmatics and so on, and the research contents are only on the words of a single subject. So in order to analyze and record the entire classroom teaching records, we need a lot of manpower and material resources. Discourse behavior analysis can be improved in the aspects of analytic methods, analytic dimensions, and methods of operation and so on. Aiming at the characteristics and the dimensions of classroom discourse depended on the environment of information. This article implements a semi-automatic analysis of classroom discourse. The main results of this paper are showed as follows:1.Automatic classification model of classroom discourse has been presented, and an evaluation index system has formed.2. In terms of discourse’s features and function, digital classroom discourse is divided into four types:Classroom teaching organizational discourse, teaching content presentation discourse, Interactive type of discourse, Evaluation feedback words. And the characteristics words of each category are identified.3.Based on40instructional videos for the nine-year compulsory education, a corpus of types of classroom discourse has been built by manual classification.The author trans-code the classroom process into the XML document class, and use the program to resolve the document, save the result.4.This paper realizes the automatic classification of classroom discourse. To improve the accuracy of its classification, this paper filter the keywords of the teaching content at first, then use Bayesian classifiers for classification. 5.This paper focus on the amount of classroom discourse, discourse type distribution, question feedback, vocabulary features of teachers’ language of excellent classroom, using automatic statistics, analysis, and forming the evaluation criteria, Recommendations, giving general classroom some teaching Recommendations.This paper discusses how to analyze class discourse by information technology methods. The significance of the research is to achieve fast and accurate analysis of classroom discourse. The research has brought convenience to the teaching evaluation, has provide innovation of method to form the classroom discourse levels of classroom teaching evaluation. And then the characteristics of this method is the exploration on the teaching evaluation method, the proposal of the model of classroom discourse analysis, and the using of the thought of this classification to achieve the automatic classification of classroom discourse. This is another leap on applying information technology tools into the areas of teaching evaluation.