
Accession Number : ADA139817
Title : Statistical Analysis of Very HighDimensional Data Sets of Hierarchically Structured Binary Variables with Missing Data and Application to Marine Corps Readiness Evaluations
Descriptive Note : Scientific rept.
Corporate Author : GEORGE WASHINGTON UNIV WASHINGTON DC INST FOR MANAGEMENT SCIENCE AND ENGINEERING
Personal Author(s) : Zacks, S ; Marlow, W H ; Brier, S S
PDF Url : ADA139817
Report Date : 31 Dec 1983
Pagination or Media Count : 46
Abstract : The present analysis deals with very highdimensional data sets, each one containing close to nine hundred binary variables. Each data set corresponds to an evaluation of one complex system. These data sets are characterized by large portions of missing data where, moreover, the unobserved variables are not the same in different evaluations. Thus, the problems which confront the statistical analysis are those of multivariate binary data analysis, where the number of variables is much larger than the sample size and in which missing data varies with the sample elements. The variables, however, are hierarchically structured and the problem of clustering variables to groups does not exist in the present study. In order to motivate the statistical problem under consideration, the Marine Corps Combat Readiness Evaluation System (MCCRES) is described for infantry battalions and then used for exposition. The present paper provides a statistical model for data from MCCRES and develops estimation and prediction procedures which utilize the dependence structure. The EM algorithm is applied to obtain maximum likelihood estimates of the parameters of interest. Numerical examples illustrate the proposed methods.
Descriptors : *COMBAT READINESS, *DATA PROCESSING, *MARINE CORPS OPERATIONS, *MATHEMATICAL MODELS, *SCORING, *STATISTICAL ANALYSIS, BATTALION LEVEL ORGANIZATIONS, BINARY NOTATION, COMBAT EFFECTIVENESS, INFANTRY, MAXIMUM LIKELIHOOD ESTIMATION, MULTIVARIATE ANALYSIS, PARAMETERS, TABLES(DATA), VARIABLES
Subject Categories : Statistics and Probability
Military Operations, Strategy and Tactics
Distribution Statement : APPROVED FOR PUBLIC RELEASE