Abstract
Grey relational analysis (GRA) is a part of the Grey system theory (GST). It is appropriate for solving problems with complicated interrelationships between multiple factors/parameters and variables. It solves multiple-criteria decision-making problems by combining the entire range of performance attribute values being considered for every alternative into one single value. Thus, the main problem is reduced to a single-objective decision-making problem. In this study, we developed a decision support system for the evaluation of written exams with the help of GRA using contextual text mining techniques. The answers obtained from the written exam with the participation of 50 students in a computer laboratory and the answer key prepared by the instructor constituted the data set of the study. A symmetrical perspective allows us to perform relational analysis between the students’ answers and the instructor’s answer key in order to contribute to the measurement and evaluation. Text mining methods and GRA were applied to the data set through the decision support system employing the SQL Server database management system, C#, and Java programming languages. According to the results, we demonstrated that the exam papers are successfully ranked and graded based on the word similarities in the answer key.
Highlights
The concept of measurement, which aims to determine and grade differences, is defined as the observation of characteristics and the expression of observation results [1]
We developed a decision support system based on text mining and Grey relational analysis (GRA) to evaluate the written exams
The number of frequencies of the word roots in the answer key was determined, and the bag of words, BoW1, representing the answer key was created for each question
Summary
The concept of measurement, which aims to determine and grade differences, is defined as the observation of characteristics and the expression of observation results [1]. By measuring, differences between objects can be quantitatively determined and graded according to the properties possessed by the objects In this way, measurement methods can be seen as a decision-making process. The appearance of the student (i.e., dressing style) affects the evaluation result For these reasons, oral exams are a measurement tool that results in high inconsistencies. In multiple-choice exams, the student chooses the most appropriate answer to the question These exams reduce expression skills, decision-making skills, and interpretation power, and cannot measure mental skills.
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