Questions Regarding Causal Forest Variable Types and "test_calibration" Interpretation

[Matt9617]

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Hi, Thanks for your work.

I am a student currently learning about causal forest and have some questions regarding the variable types and test_calibration Interpretation in causal forest.

1. Does causal forest support scenarios where the treatment variable is continuous and the outcome variable is binary?
2. The documentation states: "If Y.hat or W.hat = NULL, these are estimated using a separate regression forest." Does this mean I can skip predicting Y.hat and W.hat before setting up the causal forest and just use the default parameters?
3. Is a significant value of differential.forest.prediction between 2 and 3 acceptable, and what is the implication of such a relatively high value?

Best Regards.

[erikcs]

Hi @Matt9617,

1. Yes.
2. That's correct.
3. Stefan has a nice video lecture here on interpreting that kind of calibration exercise. You might find this recent grf feature, RATE, easier to interpret.