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I've been working with the Random Forest algorithm in LightGBM over the past day and I've ran into some unexpected behavior. Gamma regression seemed unstable but linearly scaling the labels to a small…
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I'll give a detailed enviroment sheet and a reproducible example, but meanwhile this is the problem:
> d.level1 lightgbm::setinfo(d.level1, 'label', level1.response)
Error in paste(as.character(…
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I followed the installation guide in wiki to build the gpu version of lightGBM. However, the version detected when I entered `sudo cmake -USE_MPI=ON -USE-GPU=1 ..` is 2.0, while the version actually i…
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Compilation for my Windows machine fails under a specific scenario:
* a187ed6 crashes during compilation
* 84ab74f generates errors
Affects only one desktop with a NVIDIA 1030. Exact copy of th…
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Here are some results for a dual socket system, differentiating NUMA and UMA runs.
Average timing, 5 repeats for each:
![image](https://user-images.githubusercontent.com/9083669/48001699-970d810…
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I'm having trouble figuring out the example in `?lgbm.cv`. It looks like it's on the housing price dataset, but I'm not 100% sure. When I try to run it, I get the following error:
```{R}
Error in …
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My understanding of `colsample_bytree` is that it randomly samples from the features (columns) for each tree, so it would be a way to limit dimensionality prior to constructing trees. However when I u…
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I'd like to use R to send SVMLight format (of a sparse Matrix) to h2o for processing. Trying to install the sparsity package so i can convert from sparse matrix to SVMLight, using the following:
d…
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refer to https://arxiv.org/pdf/1702.08835.pdf
Welcome to contribute for this.
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Hello,
Some days ago it was presented an alternative to deep neural networks based on a new concept based on _deep_ random forest. Based on the maturity of _ranger_, it would be very nice to have t…