Table 3.

Overall accuracy of each index varying with populations.

Population	Index
	Overall accuracy (%)
	DBI	FCMI	PASI	DBFCMI	Average
30	71.6	73.2	64.9	75.5	71.3
60	74.7	69.3	68.6	72.9	71.4
75	70.3	73.7	70.8	72.1	71.7
90	73.8	65.7	70.7	73.9	71.0
Standard deviation	2.0	3.7	2.8	1.4	—

*String length: 8, selection way: roulette wheel selection, crossover rate: 0.8, crossover way: two-point crossover, and mutation rate: 0.003.