Zach Deane-Mayer

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icon company AI Insight Solutions icon location Boston, MA icon location AI executive & Kaggle Grandmaster: 15+ years building with AI and ML.

Results 138 comments of Zach Deane-Mayer
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Error when making prediction using a greedy ensemble model

I'm using Rstudio. Try cut and pasting the code you posted above into a fresh R session. I suspect you have a typo or a bug somewhere

Error when making prediction using a greedy ensemble model

Can you reproduce it on another computer? I can't debug it if I can't get my computer to error in the same way =/

Error when making prediction using a greedy ensemble model

I can't debug the error unless I can reproduce it, unfortunately.

Improve prediction intervals and documentation

Hmmm, part 4 is tricky. Part 2 is tricky as well. Some caretStack models (e.g. glm) will have prediction intervals, and others (e.g. gbm) will not.

Improve prediction intervals and documentation

Sounds good!

caretStack is reordering the x and y such that y is in ascending order, but is not reordering the wts

Yikes! If you'd like to submit a PR to fix this, I'm happy to take this, otherwise I'll get to it when I have some free time

Nested cross-validation

@rlesca01 If you want to incorporate this into caretEnsemble, feel free to send a PR. Otherwise, Jared or I will give it a shot soonish.

caretStack with mixture of models and features as inputs

I haven't directly implemented this yet, but you could use [`caretEnsemble:::makePredObsMatrix`](https://github.com/zachmayer/caretEnsemble/blob/master/R/helper_functions.R#L211) and then manually add additional predictors to the datasets.

using custom caret model with caretEnsemble. How?

Yeah, caretEnsemble doesn't like custom models at the moment. We're working on that

using custom caret model with caretEnsemble. How?

Yes, https://github.com/zachmayer/caretEnsemble/pull/198 should have resolved this