Detector Similarity Answers Between Students on Essay Digital Exam System

Abstract

This research is motivated by the problem of students who cheat while exam. Cheating can interfere in the evaluation process. A system was made for essay type questions because exams that use computers/smartphones are still many using multiplechoice questions. The method used for essay scoring is term frequency, n-gram, and cosine similarity. The concept is comparing keyword answers as query and student answer as a document then get a score of student answer. This method can also be used in another way, which is comparing answers between students where the result is a score of similarity student answers. Student answers that have 75% similarity will be considered by the system as cheating which is expected to help teachers for evaluating exams or learning.