How to save glm result without data or only with coeffients for prediction?

Question

When I use the following R code,

model_glm=glm(V1~. , data=xx,family=\"binomial\");
save(file=\"modelfile\",model_glm);

The size of modelfile w

Answer 1

object.size() is misleading because it ignores the environment attributes. If you want to assess the true size, use:

length(serialize(model_glm, NULL))

Apart from the data stored, if you want to significantly reduce the size of your glm do:

rm(list=ls(envir = attr(model_glm$terms, ".Environment")),
     envir = attr(model_glm$terms,
              ".Environment"))

This comes from a well detailed article