Intelligent Indexing System Of Mathematics Test Questions

There are so many mathematics test questions,how to effectively extract the characteristic information of the mathematics test questions and improve the intelligence of the mathematics test questions is our goal.The indexing of mathematics test questions is the process of extracting the features of the mathematics test questions.Now the recognition of the words in the mathematics test questions can be completed by OCR technology.However,mathematics test questions contain many mathematical formulas,and most of these formulas cannot be directly recognized by OCR.As a result,the mathematical test papers saved in the form of pictures are not comprehensive when outputting information.It is time-consuming and labor-intensive to manually classify mathematics test questions,and subjective errors are inevitable.In order to make the information of the mathematics test questions complete,and improve the classification efficiency of the mathematics test questions.This paper designed a intelligent indexing system of the mathematics test questions,which is aimed at mathematics test questions image data,proposed an editable image of mathematics test questions,and index them.The main work and methods of use are as follows:(1)Chinese character recognition in math problems: Use OCR technology to identify the Chinese character in the mathematics test questions.(2)Formula identification and figure extraction in mathematics test questions: The part that OCR cannot recognize is assumed to be a formula or a graph,use the method based on the black connected set adjacency graph and OCR technology to extract the formula in the mathematics test questions.Then use the method based on characteristic characters to identify the correctly extracted formula,and convert the formula features into feature keywords.The geometric figures in the mathematics test questions are cut out and kept in the images.(3)Mathematics test questions indexing: index the keyword library according to the mathematics exercises,and match the keywords with the characteristics of the mathematics questions.Match the successful keywords as the knowledge points involved in the mathematics test questions,the highest grade that the keyword belongs to is the grade of the mathematics test questions,the number of keywords determines the difficulty of the mathematics test questions.Through experimental verification,the accuracy of mathematical formula extraction has reached more than 85%,realized automatic feature extraction and indexing of mathematics test questions.Instead of manual operation,improved indexing efficiency and the purpose of designing the system is achieved.