@inproceedings{d4378b93dfd1411b8f150d5857b7d781,

title = "Equal area logistic estimation for item response theory",

abstract = "Item response theory (IRT) models use logistic functions exclusively as item response functions (IRFs). Applications of IRT models require obtaining the set of values for logistic function parameters that best fit an empirical data set. However, success in obtaining such set of values does not guarantee that the constructs they represent actually exist, for the adequacy of a model is not sustained by the possibility of estimating parameters. In this study, an equal area based two-parameter logistic model estimation algorithm is proposed. Two theorems are given to prove that the results of the algorithm are equivalent to the results of fitting data by logistic model. Numerical results are presented to show the stability and accuracy of the algorithm.",

keywords = "item response theory, logistics model, parameter estimation",

author = "Lo, {Shih Ching} and Wang, {Kuo Chang} and Chang, {Hsin Li}",

year = "2009",

doi = "10.1063/1.3225354",

language = "English",

isbn = "9780735406858",

series = "AIP Conference Proceedings",

pages = "485--488",

booktitle = "Computational Methods in Science and Engineering - Advances in Computational Science, Lectures Presented at the Int. Conference on Computational Methods in Science and Engineering 2008, ICCMSE 2008",

note = "6th International Conference on Computational Methods in Sciences and Engineering 2008, ICCMSE 2008 ; Conference date: 25-09-2008 Through 30-09-2008",

}