search for: lily_sum

Displaying 2 results from an estimated 2 matches for "lily_sum".

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2009 Aug 31
2
interactions and stall or memory shortage
...or a single pair of interactions, when I try to evaluate two pairs of interactions( flowers*gopher, flowers*rockiness) my computer runs out of memory, and the larger desktop I use just doesn't go anywhere after about 20 minutes. Is it really that big a calculation? to start: mle2(minuslogl = Lily_sum$seedlings ~ dnbinom(mu = a, size = k), start = list(a = 10, k = 1)) then: i2<-interaction(Lily_sum$flowers, Lily_sum$gopher) i3<-interaction(Lily_sum$flowers, Lily_sum$rockiness) mle2(Lily_sum$seedlings ~ dnbinom(mu = a, size = k), start=list(a=10,k=1) ,parameters=list(a~i3+i2+Lily_sum$flo...
2009 Oct 15
2
When modeling with negbin from the aod package...
Hi, When modeling with negbin from the aod package, parameters for a given count y | lambda~Poisson(lambda) with lambda following a Gamma distribution Gamma(r, theta) are estimated. The intercept is called phi. Some other parameters may be also be estimated from factors in the data: the estimates returned for all these would be in accordance with the Value listing in the negbin entry in the aod