about cost function:cost[ x ] = 2 - exp( - tmpCost / 35 ) - exp( - 255 * cost[ x ] / 15 );

[luomomo]

Hi,I want to know the meaning of the cost function.It is hard to understand for me. Where is this come from?It looks not the same as : cost=(1-lamda)costA+lamdacostB Thanks~