what type of regression is this?

General
1

I have a code for a linear model that looks like this

intercept = `binary variable as string` + `other binary variable string`
lm(`dependent var` ~ 0 + (intercept + `independent var` + `other independent var`):(`binary variable `+ `other binary variable`),(data=data)

does anyone know the name for this type of regression? I am trying to do more reading on it but don't see anyone else using this sort of code online

2

the result is a model with an intercept for each binary category and separate coefficients for each category-independent var combination, but only one R squared value. when i compare the result to just doing separate lm models for each category of data, the coefficients are very similar but slightly different

3

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