[Statlist] Research seminar in statistics, GSEM, University of Geneva

[Eva Cantoni]

Organisers : .
E. Cantoni - E. Ronchetti - S. Sperlich - M-P. Victoria-Feser


Friday October 17th, 2014
at 11h15
Room M 5220, Uni Mail (40, bd du Pont-d'Arve)


Prof. Louis-Paul Rivest
(Université Laval, Québec, Canada)


TITLE:
Dealing with unit level heterogeneity when estimating the size of a 
closed population using capture-capture data


ABSTRACT:
This presentation is concerned with capture-recapture experiments where 
the capture probabilities vary between units. The goal is to estimate 
the population size N. Three cases are investigated.  We first consider 
experiments with two capture occasions. In this case, the only available 
solution to deal with the heterogeneity is to measure, on the units 
captured, the variables causing it. With more than two capture 
occasions, the heterogeneity can be detected without covariables. 
Estimating N is still difficult since the data does not allow a clear 
characterization of the heterogeneity.  The third situation considered 
is that of a unit level heterogeneity in multi-list problems. The 
estimation of N is then based on log-liner models featuring individual 
list effects and list interactions. We will investigate the impact of  a 
unit level heterogeneity when using these models to estimate N.


Visit the website: http://www.stat-center.unige.ch/ressem.html

-- 
Prof. Eva Cantoni
Research Center for Statistics and
  Geneva School of Economics and Management
University of Geneva, Bd du Pont d'Arve 40, CH-1211 Genève 4
http://www.stat-center.unige.ch/members2/profs/eva-cantoni/