8. The method of claim 6 , further comprising comparing the weight with a maximum weight and if the weight is greater than the maximum weight setting the weight to the maximum weight.
8. The method of claim 6 , further comprising comparing the weight with a maximum weight and if the weight is greater than the maximum weight setting the weight to the maximum weight. 9. The method of claim 8 , wherein summing the score of each of the best match pairs comprises summing the positive scores before summing the negative scores.