How to split/partition a dataset into training and test datasets for, e.g., cross validation?

How to split/partition a dataset into training and test datasets for, e.g., cross validation?

python arrays optimization numpy

numpy

Python vectorizing nested for loops

python numpy for-loop optimization vectorization

numpy

Swapping the dimensions of a numpy array

python arrays optimization numpy dimensions

numpy

Fast tensor rotation with NumPy

python optimization numpy rotation scipy

numpy

No speed gains from Cython

python optimization numpy cython

numpy

Techniques for working with large Numpy arrays? [duplicate]

python arrays optimization memory-management numpy

numpy

Comparing Python, Numpy, Numba and C++ for matrix multiplication

python c++ numpy optimization numba

numpy

Python equivalent of MATLAB's "ismember" function

python matlab optimization numpy

numpy

Optimizing a reed-solomon encoder (polynomial division)

python numpy optimization cython pypy

numpy

Fastest 2D convolution or image filter in Python

python optimization numpy python-imaging-library scipy

numpy

A fast way to find an all zero answer

python algorithm math numpy optimization

numpy

improving code efficiency: standard deviation on sliding windows

python optimization python-2.7 numpy

numpy

Integer step size in scipy optimize minimize

python optimization numpy machine-learning scipy

numpy

How do I use a minimization function in scipy with constraints

python optimization numpy scipy

numpy

Is numpy.transpose reordering data in memory?

python arrays optimization numpy

numpy