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1. Poisson glm with aggregated data. (score: 1): Author: Gerald.Jean@spgdag.ca; Date: Tue, 4 Dec 2001 16:55:16 -0500; Hi S-users, S+6, on NT4 I have a large, very large data set consisting of several factor variables and of four continuous variables. The data comes from transactionnal data and the continuous variabl; /archives/html/s-news/2001-12/msg00030.html (9,251 bytes)
2. Re: Poisson glm with aggregated data. (score: 1): Author: Prof Brian Ripley <ripley@stats.ox.ac.uk>; Date: Tue, 4 Dec 2001 22:42:35 +0000 (GMT); glm has a very sloppy default convergence criterion. You need to tighten it, for example by epsilon = 1e-10, to get reproducible results. Also, I think you should be using an offset and not dividing; /archives/html/s-news/2001-12/msg00031.html (11,719 bytes)
3. Re: Poisson glm with aggregated data. (score: 1): Author: Gerald.Jean@spgdag.ca; Date: Thu, 6 Dec 2001 14:17:28 -0500; Hello S-users, I received only one reply to my posting regarding "Poisson glm with aggregated data". Thanks to Brian Ripley for his comments, very usefull as usual. His reply follows with my original; /archives/html/s-news/2001-12/msg00060.html (14,775 bytes)

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