def rsa_given_lambda(semantics_mat, saliences, util_func=log):
rsa_obj = RSA(semantics_mat)
rsa_obj.r0()
# returns a an RSA object given a specific lambda
def func_over_lambda(lamb):
rsa_obj.l = lamb
rsa_obj.s1(util_func)
return rsa_obj.r2(saliences)
# return function over RSA objects
return func_over_lambda
