(1950) AN IMPROVEMENT AND APPLICATION OF A SOURCE CODE SIMILARITY MEASURING METHOD FOR PROGRAMMING EDUCATION SUPPORT SYSTEM

摘要

To assess students' programming skills, teachers spend considerable time to check the source codessubmitted from students as a part of programming class. To reduce the burden, teachers may usesome kinds of source code similarity measuring tools automate the task. However, it is difficult todifferentiate a pair of source codes produced as assignments of programming class because thesource codes are relatively short in length, simple in its structure, and similar each other in algorithm.In this study, we introduce FRef [1], the similarity measuring method that utilize the feature vectorscalculated by using some reference data. The method showed effectiveness in searching similarsource codes. We apply FRef in combination with a simple similarity measure based on softwaremetrics aiming to achieve an auto-scoring function of the education support system for programmingclass in universities. We also discuss about reasonable criteria of correctness for auto-scoringfunction.