
30 Bat Algorithm (BA)
Figure 2.3: The diagram of hybrid BA-ABC with communication strategy [18]
Bayes theory for feature selection in [21]. The velocity in the standard BA is represented
as a positive integer number. Velocity suggests the number of bat attributes that should
change at a certain moment of time. The difference between bat position and best
solution in velocity calculation is represented as the difference between feature size of
the given solution and the best solution. Bat position is represented as the binary string
representing the selected/unselected features. Loudness is represented as the change in
number of features at a certain