In the context of capture-recapture studies, Chao (1987) derived an inequality among
capture frequency counts to obtain a lower bound for the size of a population based on …

This note generalizes Chao's estimator of population size for closed capture–recapture
studies if covariates are available. Chao's estimator was developed under unobserved …

Estimates of the sizes of key populations (KPs) affected by HIV, including men who have sex
with men, female sex workers and people who inject drugs, are required for targeting …

Capture–Recapture methods aim to estimate the size of an elusive target population. Each
member of the target population carries a count of identifications by some identifying …

Population estimation methods are used for estimating the size of a population from samples
of individuals. In many applications, the probability of being observed in the sample varies …

A binomial mixture model has been used to account for heterogeneous individual capture
probabilities in capture–recapture studies. The problem of estimating the population size is …

When a nonparametric mixture model is adopted to deal with the heterogeneity among
individual capture probabilities, the population size is nonidentifiable (, Biometrics 59, 1123 …

Context Penguin Island supports the largest colony of little penguins in Western Australia. It
is subjected to a suite of anthropogenic threats because of its proximity to an increasing …

This work considers the estimation of the size N of a closed population using incomplete lists
of its members. Capture histories are constructed by establishing the presence or the …

A recent method for estimating a lower bound of the population size in capture–recapture
samples is studied. Specifically, some asymptotic properties, such as strong consistency and …