Automatic Scoring System

With the development of education and computer education, The workload of teachers will be more and more. Therefore, The research and implementation of computer examination Program Design Subject Automatic Scoring Technology have a significant meaning for computer education field and computer examination field, and also is one of the key issues that must be resolved to achieve paperless computer examinations.This paper focuses on the salvation of operation subject and programming subject. In operation subject, focusing on the application of EXCEL, separately study on the content of cell, the cell format, formula and function, sheet operation, data analysis and charts marking. At the same time as candidates misuse and other reasons, there is always targeting error or misjudgment caused by errors associated in the result of the candidates. We designed the fault-tolerant algorithms to analyze and reduce misjudgment.The difficulty of automatically evaluation technology for Windows on the machine operating subject lies in the process of monitoring and evaluation of candidates' answers. The method of "evaluation of candidates' final answers" can not be used to judge the accuracy of machine operation subject.In the VB program, automatic evaluation is by combining the method of dynamic marking and static marking. Dynamic marking namely is to run candidates' program, sending simulation information to the procedures applied, making the procedure run automatically in accordance with the established strategy, and by comparing the results, give scores. At the same time, if the subject involved control attributes set or the dynamic marking of the candidates' running results score is zero, the static marking method is adopted to give corresponding scores, ensuring the consistency of scoring.In VF operation of that, as the majority of documents are stored in the form of DBF, we can use the Data Table provided by VF to judge the accuracy of the subject.Finally, scoring method of C language program subject is studied, on the basis of scoring method of comparing results; we've designed the method of combining dynamic and static marking to enable scoring result being more just and accurate. For those candidates with only a small amount of the mistakes, applying compiler principles of the analysis method, and dynamic mistake finding and correcting to run the system under control, so that we can score according to the result information and error information in this way we can resolve the problem of the majority of the candidates for Programming in a large number of small mistakes and lost points. For serious errors or incorrect results of the procedures, adopt static inspection, according to the number of the key words in the procedures giving corresponding scores, making it closer to the results of manual reading. In the process of system design, I attach great importance to the software's utility and robustness. Preliminary experimental results have proved that automatic scoring module run stably and scoring standard can be unified.