A Study on Implementation of C Language Codes for Estimation of Parameters in the Item Response Theory

Abstract

The purpose of this paper is to implement the estimation algorithms of the item parameters in C language by using the item characteristics curve (ICC) for each item in the item response theory (IRT). As a conclusion of the study, experiments were tested with student’s exam scores, and showed difference errors between IRTC and BayesiAn program. Thus it showed the reliability of the system result by simulating a practical use possibility. The proposed c code can be thought as an alternative to be helpful for the development of additional programs on a web platform also. Further reseach is needed about the initial problem which is that eventually the error occurs depending on the initial value and the code implement problem on how to get an estimating parameters using other algorithms.