Table 4 Parameter structures of the employed algorithms in the study.

From: A novel framework for sentiment classification employing Bi-GRU optimized by enhanced human evolutionary optimization algorithm

Algorithm

Parameter

Value

Artificial Electric Field Algorithm (AEFA) [38]

Quantity of candidates

200

Search space

20

Factor of compass and map

0.2

Operation limit of compass and map

150

Operation limit of Landmark

200

Inertia factor (\(\:w\))

1

Factor of self-confidence (\(\:{c}_{1}\))

1.2

Factor of Swarm confidence (\(\:{c}_{2}\))

1.2

Harris Hawks Optimization (HHO) [39]

Max Iteration

200

Size of market

40

FunIndex

1

White Shark Optimizer (WSO) [40]

Possibility of Habitat improvement

1

Possibility bounds of immigration per gene

[0,1]

Size of step for mathematical combination of possibilities

1

Max emigration (E)and Max immigration (I)

1

Possibility of mutation

0.005

Butterfly Optimization Algorithm (BOA) [41]

Quantity of candidates

5

Percent of nomad butterflies

0.3

Roaming percent

0.4

Possibility of mutation

0.1

Rate of sex

0.85

Possibility of Mating

0.4

Rate of immigration

0.5

Equilibrium Optimizer (EO) [42]

\(\:\beta\:\)

0.04

Ac

0.3

Artificial Ecosystem-based Optimization (AEO) [43]

\(\:\alpha\:\)

0.2

\(\:\beta\:\)

0.5

\(\:\gamma\:\)

1