THE NEED TO CONSIDER MISSING DATA IN TRANSPORTATION RESEARCH

被引：0
|
作者：
ANDERSONSPRECHER, R
IVANOVIC, M
WILSON, EM
机构：
[1] Department of Statistics and Statistical Consulting Center, University of Wyoming, Laramie, Wyoming
[2] Edwards and Kelcey, Inc., Newark, New Jersey
[3] Department of Civil Engineering, University of Wyoming, Laramie, Wyoming
来源：
CIVIL ENGINEERING SYSTEMS | 1995年 / 12卷 / 01期
关键词：
ACCIDENT DATA; EM ALGORITHM;
D O I：
10.1080/02630259508970157
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Ignoring or inappropriately treating missing data can lead to inefficiency and biased estimation. Three classes of missing data are defined and an overview of various methods for accommodating missing data is presented. A model-based approach to missing data is advanced, and tools for finding maximum-likelihood estimates in this context-in particular, the Expectation-Maximization (EM) algorithm-are described. Strengths and limitations of the EM algorithm are specified. Application of techniques to linear and loglinear models are described, and other possible applications are cited. Implementation is illustrated using epidemiological accident data.
引用
收藏
页码：37 / 48
页数：12
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