文章基本信息

标题：Estimation Of Parameters In Finite Mixtures Of Distributions From Right Censored Data
本地全文：下载
作者：Ivana Mala
期刊名称：Research Journal of Economics, Business and ICT
印刷版ISSN：2045-3345
电子版ISSN：2047-7848
出版年度：2012
卷号：7
期号：0
语种：English
出版社：English Time Schools & Overseas Education
摘要：In the text the problem of estimation of parameters in finitemixtures of probability distributions in case of the presence of right censored data is treated. Only models with known number of components and observable component membership (complete mixture models) are studied. Possible estimation method of unknown parameters (parameters of components and mixing proportions)isdescribed. Specific theoretical and.numerical problems associated with this this type of the modelling are discussed with respect to the mixture models with complete data.A simulation studyis presented toillustrate properties of estimates and sensitivity of results on the proportion of censored data and the sample size. For the simulation10,000 samples with 500 and 1,000 observations from themixtures with two components of normal (symmetricdistribution) and lognormal (asymmetric distribution)distributions are generated. Results are given in the tablesand selected histograms of estimates of parameters areshown. All computations are made in the package R.
关键词：Censored Data; Finite Mixture; Parameter Estimation ; Simulation