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

I had this issue where I was running the GLM as part of an R in production and the size of the GLM greatly slowed me down. I found I needed to kill off more than just the $data. Here is my post on it, with an example below.

> object.size(sg)
96499472 bytes
> sg$residuals <- NULL
> sg$weights <- NULL
> sg$fitted.values <- NULL
> sg$prior.weights <- NULL
> sg$na.action<- NULL
> sg$linear.predictors <- NULL
> sg$fitted.values <- NULL
> sg$effects <-NULL
> sg$data <- NULL
> object.size(sg)
3483976 bytes
> sg$qr$qr <- NULL
> object.size(sg)
79736 bytes