Dear Isaac,


I'm about to work on heavy playouts, and I'm not sure how to choose a move during the playout. I intend to have weights for various features. I thought
about 3 versions:

1. In a position, calculate all the weights and the total weight. Then, play
one move i with the probability weight_i/total_weight.


Keeping cumulative weights, as Alvaro suggested, is one way to go. You can improve #1 by choosing a possible play randomly, and then making the play with the probability weight/maximum_weight.

Bill Spight

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