lpdf

Weibull.lpdf(X)

Log of the Probability Density Function (LPDF).

The log-PDF for the three-parameter Weibull distribution is:

\[\ln f(x) = \ln(k) - \ln(\lambda) + (k - 1) (\ln(x - \gamma) - \ln(\lambda)) - \left(\frac{x - \gamma}{\lambda}\right)^k\]

Parameters:

X (ArrayLike) – The input data points at which to evaluate the LPDF.

Returns:

The log-PDF values corresponding to each point in X.

Return type:

NDArray[np.float64]