DIGITAL EXAM SYSTEM WITH ESSAY FORM TO INCREASE STUDENT INTEGRITY ON THE EXAM Rani Megasari, Munir, Regi Ismayana Pratama
Departement of Computer Science Education
Universitas Pendidikan Indonesia
Jln. Dr SetiabudhiNo.229 Bandung 40154 INDONESIA
Abstract
This resreach is motivated with problem of student who cheat while exam that reflect to their integrity. Cheating can interfere evaluation process. Exams that use computer/smartphone are still many using multiple choice question that are not same as using paper based that has more variation type of question, especially essay question, so a systes was made for essay type question. One of method that can be use for essay scoring are term frequency, n-gram, and cosine similarity. Concept of the methode are comparing keyword answer as query and student answer as document then get score of student answer. This method can also be use in other way, that is comparing ansewers between students where the result is score of similiarity student answers. Student answers that have 75% similarity will be considered by system as cheating which is expected to prevent cheating and increase student integrity. To test this system, experiments where conducted on student behavior when they knowing the system can only assess the answer and student behavior when they knowing the system can find out shich students are cheating. The result of experiment are: (1)This Resreach produced a system for exam with essay type. (2) Result of scoring student answer get the Mean Absolute Error (MAE) of 10.101 in the pre-test and 6.297 in the post-test and Pearson Correlation Coefficient Result of -0.0283 in the pre-test and -0.0286 in the post-test. (4) Result of system implementation on student integrity get a value of 60.588% in the pre-test and 88.235% in the post-test. But the number of students with similar answer are increased from 45 answers in the pre-test to 51 answers in the post-test.
