public function provideEvaluate()
{
return [[[10, 20, 15, 5], Statistics::linspace(0, 9, 10), 'silverman', [0.01537595, 0.0190706, 0.02299592, 0.02700068, 0.03092369, 0.0346125, 0.03794007, 0.0408159, 0.04318983, 0.04504829]], [[10, 20, 15, 5], Statistics::linspace(0, 3, 4), 'scott', [0.01480612, 0.01869787, 0.02286675, 0.02713209]], [[10, 20, 15, 5], Statistics::linspace(0, 3, 4), 'silverman', [0.01537595, 0.0190706, 0.02299592, 0.02700068]]];
}