[R-sig-ME] Laplace approximation

[Jarrod Hadfield]

Hi All,

I am confused about the differences between PQL and Laplace  
approximations to GLMM (after all, Breslow and Calyton's `PQL paper'  
seems to describe a Laplace approximation). If anyone could point me  
to a review paper that summarises the literature on these  
approximations, and ideally their history, I would be very grateful.

Cheers,

Jarrod

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