Table 2 Parameter settings for the variable in HHO and OBL-HHO.

From: Optimal water supply reservoir operation by leveraging the meta-heuristic Harris Hawks algorithms and opposite based learning technique

Algorithms

Parameter setting

HHO

Population = 10

Iterations = 500

Dimensions = 30

β = 1.5

OBL-HHO

Population = 10

Iterations = 500

Dimensions = 30

Threshold = 2

CSV = 0.5

β = 1.5

a_1 = 10

a_2 = 0.00005

a_3 = 0.005

∂_1 = 0.9

∂_2 = 0.1

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