Research On Network Scoring And Its Key Technology

With the development of computer information technology,the application of network information technology in the field of examination is becoming more and more important.The examination is an important part of teaching,with the increase in the number of examinations and the expansion of the scale of examination.With the increase of the number of examinations and the enlargement of the examination scale,the multiple-choice questions and answers in the traditional examination content gradually evolved into a single topic,multiple choice questions,objective subjective election questions,subjective questions,divergent thinking and other topics as one of the diversified development trend,analysis of fractional statistics marking error control,after scoring the traditional scoring method and the paper transport storage can not be accurate.The network marking system is to improve the marking speed,reduce the subjective marking error,statistical analysis and test scores for the management file for the purpose of new scoring method to fairness of the examination of new ways of judging principle.This paper adopts "Internet plus" design mode,digital image processing technology and data analysis technology,the complex work and perplexing data statistics and analysis work is automatically completed by the system of "scan and review".The system is divided into two parts: the film is scanned and the system automatically identifies the basic information of the candidate.The objective question is automatically judged by the system.The subjective problem is divided into the computer terminal by the system randomly,and the network marking is performed by the marking teachers.Injecting multiple evaluation mechanism in marking process to ensure fairness of the system,and the system automatically performance statistics and verification.The network marking combines computer network technology with teachers' experience in marking papers,not only can it reduce the errors but also improve the efficiency of marking.This paper has done the following work in the design and implementation of the network marking system:(1)On the basis of reading the relevant literature,this paper analyzes the background and current situation of domestic and foreign research,analyzes the advantages and disadvantages of several domestic systems,and expounds the importance of urgently developing a highly efficient and powerful network marking system.According to the real needs of users,combined with the application of network technology in educational technology,the development of the system is analyzed and designed;(2)The related technologies of image preprocessing are analyzed,according to several commonly used methods of image preprocessing,in addition to the electronic scanning answer card for image preprocessing operation,then the electronic scanning card image preprocessing.Then achieve the objective answer to identify the answer.Finally,the convolution neural network is applied to the field of handwritten answer and test number recognition,which can realize the automatic recognition of the objective answer and the answer and the test number,and improve the accuracy and efficiency of the system.(3)Finally,the system uses B/S development model,the use of SSH framework Java technology and MySQL database,the final development to achieve the entire marking system.