Dear R users I have a problem with the selection of the variables from a gamma model with log link function:

 
step.glm.gam1.infroma<- step(glm.gam1.infroma, direction = "backward", k=2)
 
Errore in glm.fit(x[, jj, drop = FALSE], y, wt, offset = object$offset,  : 
  ciclo intero 1; impossibile correggere la ampiezza del passo
 Inoltre: Warning message:
ampiezza del passo ridotta a causa della divergenza 
 
Could someone help me???
Thanks
Silvia
 
 


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