Investigating and fixing the `sigma0` and `sigma1` sampling issue

JingyuHe / XBART

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Investigating and fixing the `sigma0` and `sigma1` sampling issue #138

Open andrewherren opened 1 year ago

andrewherren commented 1 year ago

Opening a PR to investigate and eventually fix the problem referenced in this issue: https://github.com/JingyuHe/XBART/issues/137

andrewherren commented 1 year ago

Note: some of the changes to tree.cpp and X_struct.cpp are fixes I made to the GP sampling code, so ideally wouldn't have been mixed into this PR. I can split them out into a separate PR.