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Table 4 Keywords with occurrence frequency ≥ 2

From: Optimal reactive power dispatch: a bibliometric analysis

Keyword

Occurrence

Link strength

Particle Swarm Optimisation

101

749

Genetic Algorithm

65

489

Differential Evolution Algorithm

41

381

Gravitational Search Algorithm

28

248

Linear Programming

7

119

Bio-Geography Based Optimisation

7

76

Artificial Bee Colony

7

31

Cuckoo Search Algorithm

6

34

Ant Colony Optimisation

5

23

Imperialist Competitive Algorithm

4

45

Learning-Based Optimizer

4

42

Ant Lion Optimizer

4

29

NonLinear Programming

3

52

Chaotic Krill Herd Algorithm

3

35

Jaya Search Optimizer

3

22

Tabu Search Optimizer

3

20

Fuzzy Search Algorithm

2

86

Chemical Reaction Optimisation

2

24

Frog Leaping Algorithm

2

19

Pseudo Gradient Search

2

16

Harmony Search Algorithm

2

16

Firefly Search Algorithm

2

15

Symbolic Organism Search Algorithm

2

10