The Study Of The General Partial Credit Model (GPCM) And Applying EM Algorithm To Estimating Item Parameters

IRT is the important trend of educational and psychological measurement around the world ,and it is also increasingly becoming a hotspot in current testing fieldso A important scoring model of IRT is discussed in this article ?In the theoretic session of this article ,the logic structure ^ the application domain of GPCM are presented in details and it also points out the relations and differences between GPCM and several important Models in IRT; the application session of this article is trying to exploring a program with EM algorithm about GPCM o...