Function triangular_kernel

Lib/statistics.py:860–865

()

@register('triangular')
def triangular_kernel():
    pdf = lambda t: 1.0 - abs(t)
    cdf = lambda t: t*t * (1/2 if t < 0.0 else -1/2) + t + 1/2
    invcdf = lambda p: sqrt(2.0*p) - 1.0 if p < 1/2 else 1.0 - sqrt(2.0 - 2.0*p)
    support = 1.0
    return pdf, cdf, invcdf, support

@register('parabolic', 'epanechnikov')
def parabolic_kernel():