Guolin Ke

I am afraid that I don't have permission. Ping @shiyu1994 for help.

@shiyu1994 you can update the driver first.

I think it is a useful feature, but not trivial to implement it. we will need to refactor the whole `boosting` part. And I don't have much time recently. @shiyu1994...

@wowhhh can you provide a reproductive example?

for such a small dataset, the speed should be very fast. Did you try to build LightGBM from source in the Linux machine?

@shiyu1994 can you take a look for this PR?

@sofiavlachou28 please refer to parameter `label_gain`

@shiyu1994 is this PR ready?

For floating-point arithmetic operations, the results are not deterministic. Different hardwares, compilers, algorithms (like the order of performing sum) usually result in different results. So it is normal to get...

thank you, I think it is a bug