Displaying 1 result from an estimated 1 matches for "likelihook".
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likelihood
2005 Nov 24
1
model selection with step function
...tep wise) to select glm models.
Usually I apply the gamma distribution to analyze fishery data. To select the
terms I use a routine where I first compare single term models to the null model
(eg. U~1 vs. U~depth; U~1 vs. U~latitude; etc. ? where U= abundance) and, by
means of the result given by a likelihook function applied for each comparison,
I select the ?strongest? effect, let?s say depth. Then I run a new step
comparing the U~depth vs. U~depth+latitude; U~depth vs. U~depth+... etc. Making
this way I put the terms in ?magnitude? order.
I tried to make a gaussian model using the step(glm.model) fu...