16. The method of claim 1 , wherein calculating the first value (v1) using the obtained action value (a) and the first term value (vd1) comprises calculating: (a)(vd1).
16. The method of claim 1 , wherein calculating the first value (v1) using the obtained action value (a) and the first term value (vd1) comprises calculating: (a)(vd1). 17. The method of claim 16 , wherein the user profile includes a static portion and a dynamic portion, said static portion of the user profile comprising demographic information about the user.