Abstract #301086

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JSM 2003 Abstract #301086
Activity Number: 290
Type: Contributed
Date/Time: Tuesday, August 5, 2003 : 2:00 PM to 3:50 PM
Sponsor: Section on Survey Research Methods
Abstract - #301086
Title: On Some Aspects of Estimation Methods Based on Capture Alone with Applications
Author(s): Sameer Y. Desale*+ and Dhirendra N. Ghosh and Bimal Kumar Sinha
Companies: Student and Synectics for Management Decisions, Inc. and University of Maryland
Address: 5840 Cameron Run Terrace, Apt. 1405, Alexandria, VA, 22303,
Keywords: Bayesian ; maximum likelihood ; illegal immigrants
Abstract:

We review and extend an earlier method of Ghosh (1985) to estimate the total number of a special type of population which is augmented constantly by a fixed number but is deflated by a fixed proportion (less than one) on a regular basis. The subsample that constitutes fixed proportion of the existing population and is expunged provides an input, namely, the point in time when they entered the system. Both frequentist and Bayesian methods are described. Some generalizations are also mentioned. Two obvious examples are (1) a species of fish in a closed environment, which are caught and removed at a regular interval and the age of the fish caught is noted, and (2) Illegal immigrants to any country who are regularly apprehended and deported. They provide their time of arrival to the country.

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