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主題： Recent advances for a class of new multivariate zero inflated/truncated/adjusted Poisson and related models with applications in insurance and other fields

主講人：田國梁博士（香港大學(xué)統(tǒng)計(jì)與精算學(xué)系副教授）

時(shí)間：2015年7月4日（周六）下午14:30-16:00

地點(diǎn)：北院卓遠(yuǎn)樓305

主辦單位：統(tǒng)計(jì)與數(shù)學(xué)學(xué)院

摘要：Count data with adjusted zeros and without zero-category arise quite frequently in studies of insurance, medicine, epidemiology, public health, biology, agriculture and other fields such as sociology, psychology, ecology and engineering. In this talk, I will introduce a class of newly developed multivariate zero inflated / truncated / adjusted Poisson (MZIP, MZTP, MZAP) and related distributions (e.g., Type I, II, III and IV MZIP, MZTP, MZAP distributions) by the author and his postgraduates/collaborators. First, I introduce the Type I MZIP distribution to model correlated multivariate count data with extra zeros. The distributional properties and efficient statistical methods are developed. Next, I will briefly introduce Type I MZAP models (including Type I MZIP and MZTP as special cases) by accounting for both inflation and deflation at zero. Third, to address the issues of over-dispersion and under-dispersion, other developments are highlighted by replacing Poisson with negative-binomial and generalized Poisson distributions.

田國梁博士簡介：統(tǒng)計(jì)學(xué)博士,，香港大學(xué)統(tǒng)計(jì)與精算學(xué)系副教授，研究領(lǐng)域包括零過多計(jì)數(shù)數(shù)據(jù)分析,、不完全分類數(shù)據(jù)分析,、敏感性問題抽樣調(diào)查等，在國際主流學(xué)術(shù)刊物上共發(fā)表80 多篇統(tǒng)計(jì)學(xué),、醫(yī)學(xué)統(tǒng)計(jì)方面的學(xué)術(shù)論文，在國際著名出版社Chapman and Hall/CRC3和John Wiley & Sons出版專著3部,。目前擔(dān)任Computational Statistics and Data Analysis, Statistics and Its Interface; Communications in Statistics - Theory and Methods; Communications in Statistics - Simulation and Computation等4個(gè)國際SCI期刊副主編,。