Compute a starting point for the Simulated Annealing algorithm.
Usage
compute_starting_point_sann(beta_expe)
Arguments
beta_expe
a numerical vector, the expectation of the coefficient
function posterior sample.
Value
a matrix with 3 columns : "m", "l" and "b". The two first
columns define the begin and the end of the intervals and the third
gives the mean values of each interval.