In GA, model parameter is velocity model. We define layers and corresponding thickness interval and Vs velocity range.
Example: Bit length 3. Increment = 2^3=8 (interval is divided into 7 segments) . If interval 5-12, values are 5 6 7 8 9 10 11 12 and assigned numbers are 0 1 2 3 4 5 6 7. These assigned numbers should converted into binary. Velocity model in example is:
upper | lower | value | number | binary
SL 0 1 1 7 111
BL 1 3 2.4 5 101
UC 5 12 8 3 011
MC 5 12 10 5 101
LC 5 12 11 6 110
UM half space.