Research On The Limited Domain Dynamic Geometry Natural Language Drawing Method

Along with the continuous development of information technology, a new type of educational needs has made a great impact to the traditional education. Traditional educa-tion is increasingly unable to meet the educational needs that era entrusted, in order to ensure education advance with the times, There is an urgent need to combine the develo-ping information technology and education. With the trend in integration for information technology and curriculum, the field of mathematics education has undergone enormous changes, there is a gradual transition from the chalk and blankboard teaching to powerpo-int to dynamic geometry to super drawing board. The new way of teaching can develop students’interest in learning, improve the efficiency of classroom teaching and provide a free platform for extra-curricular independent study.However, in the use of geometric software, we often encounter some problems that human-computer interaction. The typical teaching of geometry is number and shape co-mbination. Teachers manually make the geometry based on geometric theorem,the natu-re and the proposition. Dynamic geometry has played a crucial role in geometry change. But the computer can not accurately understand the geometric proposition described by natural language. It needs to take means to allow the computer automatically to understa-nd natural language and change it into formal description. But in the existing geometry software, it doesn’t get better solution, so there is limitation in automation and intelligent in geometry software.This paper analyzed the existing problems in the system of dynamic geometry, and described the existed methods of dynamic geometry, put forwards the method that limited domain dynamic geometry natural language drawing, designed and realized the dynamic geometry drawing system based on natural language processing. The main research work as follows:(1) The construction of dictionary of geometry and geometric knowledge base. This paper constructed system mainly to middle school geometry knowledge, through to the middle school geometry teaching material, teaching syllabus and rich teaching resources to carry on the analysis, get the geometric dictionary and content of geometry knowledge base, using ontology modeling technology to build a geometry ontology;(2) Geometric elements recognition and geometric relations extraction. With geome-tric dictionary and geometry ontology as the foundation, find out the geometrical element and geometric relations described in geometry propositions.(3) Pattern matching algorithm and geometric command mapping mechanism. It m-tches language mode to geometric elements and geometric relationships, get the natural language of the geometry of propositions to the formal rules and geometric quantities, by mapping the appropriate mechanisms of the rules of geometric mapping to geometry co-mmands.Key features and innovations of the paper are these:(1) On the basis of the development of dynamic geometry of Central China Normal University Engineering Research Center for E-learning, achieve the understanding from natural language to geometric propositions.(2) Build geometric dictionary and geometry knowledge base to generate the formal ontology.(3) Build the rules of the relational schema, design pattern matching algorithms and achieve pattern matching and the conversion of natural language semantic mapping.(4) According to the plot command returns, design clauses intercropping figure command fusion algorithm to solve the internal conflicts of the geometry command set.