statsmodels.duration.hazard_regression.rv_discrete_float¶
- class statsmodels.duration.hazard_regression.rv_discrete_float(xk, pk)[source]¶
A class representing a collection of discrete distributions.
- Parameters:
- xk2d array_like
The support points, should be non-decreasing within each row.
- pk2d array_like
The probabilities, should sum to one within each row.
Notes
Each row of xk, and the corresponding row of pk describe a discrete distribution.
xk and pk should both be two-dimensional ndarrays. Each row of pk should sum to 1.
This class is used as a substitute for scipy.distributions. rv_discrete, since that class does not allow non-integer support points, or vectorized operations.
Only a limited number of methods are implemented here compared to the other scipy distribution classes.
Methods
mean
()Returns a vector containing the mean values of the discrete distributions.
rvs
([n])Returns a random sample from the discrete distribution.
std
()Returns a vector containing the standard deviations of the discrete distributions.
var
()Returns a vector containing the variances of the discrete distributions.