Simplified Equally-Likely Removals in Simulations.

Abstract

Random simulation models often involve many equally-likely removals of determined numbers from identified groups of persons or objects. That is, all ways of selecting those actually removed are equally likely. The time and expense for such removals can be substantially reduced (compared to a separate equally-likely selection for each removal) by a simplified method that frequently is usable in at least part of a model. This simplified method can be applied to groups which consist of members of the same type and which, except for the initial group(s), are obtained from previous such groups by removals and/or subdivisions. For an application to members of a given type, a random ordering is assigned to the persons or objects that can be of that type (all possible orderings equally likely). This assignment is independent of all other aspects of the simulation and is used only for equally-likely removals involving the specified type. All such removals are made on the basis of this ordering. Attritions constitute an important class of removals. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 21, 1970
Accession Number
AD0715086

Entities

People

  • John E. Walsh

Organizations

  • Southern Methodist University

Tags

DTIC Thesaurus Topics

  • Attrition
  • Computing-Related Activities
  • Data Science
  • Information Science
  • Interdisciplinary Science
  • Simulations
  • Statistics

Fields of Study

  • Mathematics

Readers

  • Statistical inference.
  • Systems Analysis and Design
  • Wetland-Land-Environmental Management.