Erik Sverdrup

Ref the comment in #1154 (11) solved for tau (the name "eta" is used in the code) is composed of a numerator and denominator. The term `(data.get_causal_survival_numerator(sample) - data.get_causal_survival_denominator(sample) *...

Hi @shibakoichiro, generally speaking even though all point estimates of something are above zero the mean does not necessarily have to be significantly different from zero? You can tweak the...

Also, the [best linear projection](https://grf-labs.github.io/grf/reference/best_linear_projection.html) might be useful: Here is similar illustration in a case with low signal where one covariate matters for tau: ```R set.seed(123) n

_Edit_: I marked my first post as outdated as sticking to the second example is more clear @adeldaoud, Yes, in that example noise was increased by just multiplying the error...

Thanks for the suggestion @NicolasWoloszko. At the moment this is not something we have devoted much thought to, so a prototype would be welcome if you are interested. For example,...

Hi @LuqianSun, you could try tuning the grf_cluster_model by passing `tune.parameters = "all"` and see if that helps

One way to interpret this is that GRF does not detect any HTEs in your clustered setup. Stefan has a lecture covering the intuition behind this kind of check here:...

> @erikcs Thanks. On your second point, after reading the links, the qini curve does not tell us anything about grf fit. It is merely about interpreting HTE if there...

Hi @kimpeijn, I think @muhlbach applies causal forest to a similar panel data setup in his [thesis](https://pure.au.dk/portal/files/198663023/Nicolaj_Mu_hlbach_PhD_dissertation.pdf), if you look at section 2.3.3

On [de-serialization](https://github.com/grf-labs/grf/blob/master/r-package/grf/bindings/RcppUtilities.cpp#L21) (currently mainly used for predicting on new X): The Tree constructor mainly takes a collection of vector, in the Rcpp wrappers [these](https://github.com/grf-labs/grf/blob/master/r-package/grf/bindings/RcppUtilities.cpp#L41) calls constructs new vectors by copying...