Research On Prototype Construction Of Primary School Mathematics Application Problem Teaching Expert System

According to the type of application question in primary mathematics, this paper can be divided into integer step calculation application question,integer two-step calculation application question and decimal fraction application question, and it has doing structural chatacteristics analysis according to the different kinds of application question. Based on the analys, this paper uses the text information extraction method and KDML method to make a formal expression for the structure of integer step calculation and integer two-step calculation application question. In addition, combine with Mathematical operation method, this paper also put forward the definition and presentation of knowledge operations set’s formal expression according to the meaning of Information extraction model. This definition extracts useful information from Mathematical application questions and assigns the concrete operational value to knowledge of the operation variables on operations.In the process of information extraction, this paper uses the based on rule reasoning function in CommonKADS-Knowledge Acquisition Documentation and Structuring model. According to the producing type of knowledge representation method, the reasoning rule comes up with what operators to calculate at the beginning of problem solving after measurement to the data quantifier information. As well as in integer tow-step calculation application question, it needs a secondary judgement for operational symbol, and save the result into temporary variable in a proper order. Then, we can do the data calculation after the extraction in turn of operators in the opposite direction. This can achieve an automatic solution of the integer part of application question.This article is divided into six chapters:Chapter Ⅰ:This chapter mainly described the research question, the purpose and significance of the subject choosing, and the research methods and theoretical foundation.Chapter Ⅱ:This chapter mainly described the concept, structure and characteristics of the expert system; meanwhile, it sorted primary mathematics application question, and carried out a detailed analysis of the characteristics.Chapter IV:This chapter carried out the formal definition for primary mathematics application question. According to KDML method, it also carried out the formal definition for integer step calculation and integer two-step calculation application question.Chapter Ⅳ:This chapter mainly introduced the method of knowledge representation and knowledge acquisition, and it uses the frame knowledge representation to sort the math application question at the same timeChapter Ⅴ:According to the information extraction model and mathematical algorithms, the author put forward the knowledge operations set’s formal definition and expression combined with CommonKADS model in Knowledge engineering area, and made a detailed description for the solving process to integer step calculation, integer two-step calculation application question.Chapter VI:From a design perspective, this section discusses the design of the overall framework of the Primary Mathematics Application Problem teaching expert system design and the various functional modules, and briefly described the structure of the system design and implementation of ideas.