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Estimation Of Latent Trait Variable In Multidimensional Irt Models

Posted on:2018-01-05Degree:MasterType:Thesis
Country:ChinaCandidate:Y R ZhangFull Text:PDF
GTID:2347330515471840Subject:Statistics
Abstract/Summary:PDF Full Text Request
In this paper,we introduce a weighting method based on precision to estimate the latent trait in the multidimensional three-parameter logistic model.Some other estimation methods are also derived and studied.In the simulation study,the mean error,absolute mean error and mean squared error of an estimation method based on precision weighting are compared with other estimation methods.We come to the corresponding conclusion,the weighting method based on precision has some advantages over other estimation methods.Compared with maximum likelihood estimation,maximum a posteriori estimation and weighted maximum likelihood estimation,it performs satisfactorily.Therefore,this method has certain prospects for future development,it is worth further study.
Keywords/Search Tags:item response theory, three-parameter logistic model, the weighted estimation method based on precision
PDF Full Text Request
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