Table 1.

Performance comparison

Statistic	Weighted method	Simulated annealing	Back-propagation
Mean	14.9204	28.4318	47.7964
SD	3.3766	2.1833	0.4512
Minimum	6.016	25.5978	43.6813
Error number	6	33	81

For each method, the same network structure (2-25-1) and amount of computation time are used. Repeated random startings are used for simulated annealing and back-propagation. The mean, SD, and minimum are summary statistics of the energy of the configurations found by each method. The error number is the minimum number of misclassified training cases (of 192) attained by that method.