Missing values in bitbrains_rnd

[DevCrafterLZY]

Hi,

I noticed that bitbrains_rnd seems to contain some missing values (NaNs).

May I ask if this is expected, and whether there is a recommended way to handle them?

For example, I observed NaNs when loading the dataset as follows:

from datasets import load_from_disk
import pandas as pd

data = load_from_disk("./bitbrains_rnd")
sample = data[0]
print(sample["target"][0])

Thanks for your help!