Before revision:  Hutchinson, Lo and Poggio asked the question that if learning networks can learn the Black-Scholes formula, and they studied the network (S_t/K, \tau) C_t/K where S_t, K, \tau, C_t are the underlying price, strike, time to maturity and option price. In this paper we propose a novel decision function and study the network (S_t/K, \tau) V_t/K where V_t is the time value.
After revision:  Hutchinson, Lo and Poggio asked the question that if learning networks can learn the Black-Scholes formula, and they studied the network (S_t/K, \tau)  V_t/K where V_t is the time value.