Remember the SABR( Stochastic alpha beta rho) diffusion system:
Where rho is the correlation between the two brownians. dWt1dWt2=ρdt
We are going, in terms of some market values, to estimate α ,μ, ρ that if we put in our diffusion, we obtain this market values
In general the Beta is not estimate, it is easily found in each corresponding markets.
Copyright : Moulong Armel Rodrigue, 2012