[R] Theta and clumping (or aggregation) parameter k

From: Johan Kotze <kotze_at_mappi.helsinki.fi>
Date: Tue 31 May 2005 - 22:41:36 EST


Hi all, in R the glm.nb models return a theta value, the aggregation parameter for negative binomial distributions. Crawly in his S-Plus book talks about the clumping (aggregation) parameter k. Are these two things (theta and k) different, and if so, what would be the relationship between the two?

Thank you in advance,
Johan

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Johan Kotze
Department of Biological and Environmental Sciences
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Editor-in-Chief, Journal of Negative Results - EEB (www.jnr-eeb.org)
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Received on Tue May 31 22:48:00 2005

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