Returns a vector with the probability densities of each of the distribution subinterval bounds.
The sequence of densities depend on the weights specified on construction: Each subinterval bound is assigned a probability density proportional to its weight, in such a way that the integral that covers all possible values is exactly 1.0.
There is no way to retrieve the specific weights used on construction, but only these derived densities.
A vector with the probabilities of each subinterval. result_type is a member type, defined as an alias of the first class template parameter (RealType).