<p>In <a href="https://github.com/mlpack/mlpack/pull/523#discussion_r60356249">src/mlpack/core/util/split_data.hpp</a>:</p>
<pre style='color:#555'>> @@ -0,0 +1,108 @@
> +#ifndef __MLPACK_CORE_UTIL_SPLIT_DATA_HPP
> +#define __MLPACK_CORE_UTIL_SPLIT_DATA_HPP
> +
> +#include <mlpack/core.hpp>
> +
> +#include <iterator>
> +#include <numeric>
> +#include <random>
> +#include <tuple>
> +#include <vector>
> +
</pre>
<p>Thank you very much, I forgot to remove those useless headers.</p>
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