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A Note on Simplifying Likelihoods for Site Occupancy Models

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We show how a simple reparameterization can reduce the number of parameters that need to be estimated by numerical maximum likelihood in site occupancy models. Three examples are provided.

Keywords: Heterogeneous detection models; Orthogonal parameter estimators; Profile log likelihoods; Timed species counts; Zero inflation; Zero-modified distributions

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1541-0420.2006.00724.x

Affiliations: 1: Institute of Mathematics, Statistics and Actuarial Science, University of Kent Canterbury, Kent CT2 7NF, U.K. 2: British Trust for Ornithology, The Nunnery, Thetford, Norfolk IP24 2PU, U.K.

Publication date: June 1, 2007

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