A Celebration of Harvey Goldstein’s Lifetime Contributions: Foreword
本文是哈维·戈尔茨坦纪念特刊的前言，回顾其50多年来在多水平模型统计方法及其应用方面的开创性贡献，特别是开发迭代广义最小二乘算法及MLwiN软件，使社会与医学研究者首次能应用多水平模型。
Reading the articles comprising this reflection on Harvey's work highlights the unique breadth and depth of his contributions, spanning well over 50 years.In each area, Harvey's fresh imaginative thinking challenged established approaches and provided the impetus for substantive development -in both the statistical methodology and its application.Perhaps this is crystallized by his work on the development of the iterative generalised least squares algorithm for fitting multi-level models: there are many ways this can be done, but Harvey's approach allowed him -in an inspirational partnership with Jon Rasbash -to build on Michael Healy's Nanostat package and create ML2, then MLn and MLwiN.These in turn allowed social and medical researchers to apply multilevel modelling for the first time -and so unleashed a wave of progress,