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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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The purpose of this study was to develop a zero-in°ated Rasch (ZI-Rasch) model, a combination of the Rasch model and the ZIP model. The ZI-Rasch model was considered in this study as an appropriate alternative to the Rasch model for zero-in°ated data. To investigate the relative appropriateness of the ZI-Rasch model, several analyses were conducted using PROC NLMIXED procedures in SAS under various simulation conditions. Sets of criteria for model evaluations (-2LL,AIC, AICC, and BIC) and parameter estimations (RMSE, and r) from the ZI-Rasch model were compared with those from the Rasch model. In the data-model ¯t indices, regardless of the simulation conditions, the ZI-Rasch model produced better ¯t statistics than did the Rasch model, even when the response data were generated from the Rasch model. In terms of item parameter ¸ estimations, the ZI-Rasch model produced estimates similar to those of the Rasch model.
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/ / American Invitational Mathematics Examination: In Wikipedia, The Free Encyclope-dia
A.H. Welsh / 1996 / Modeling the abundance of rare species: Statistical models for counts with extra zeros / J. Ecol. Mode : 297 ~ 308
D. Andrich / 1988 / Rasch models for measuremen / SAGE
D. Fletcher / 2005 / Modelling skewed data with many zeros:A simple approach combining ordinary and logistic regression / Environ. Ecol. Stat 12 : 45 ~ 54
D. Lambert / 1992 / Zero Inflated Poisson regression with an application to defects in manu-facturing / Technometrics 34 : 1 ~ 14
A.H. Welsh / 1996 / Modeling the abundance of rare species: Statistical models for counts with extra zeros / J. Ecol. Mode : 297 ~ 308
D. Andrich / 1988 / Rasch models for measuremen / SAGE
D. Fletcher / 2005 / Modelling skewed data with many zeros:A simple approach combining ordinary and logistic regression / Environ. Ecol. Stat 12 : 45 ~ 54
D. Lambert / 1992 / Zero Inflated Poisson regression with an application to defects in manu-facturing / Technometrics 34 : 1 ~ 14
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