Parametric Optimization of Nd:YAG Laser Beam Machining Process Using Artificial Bee Colony Algorithm

Table 4

Two sample paired 𝑡-tests between different algorithms.

Optimization methods	Response	Results of paired 𝑡-test
GA versus ABC algorithm	HAZ	95% CI for mean difference: (0.08886, 0.09616), 𝑡-test of mean difference = 0 (versus not = 0), 𝑡 value = 50.97, 𝑃 value = 0.000
	Taper	95% CI for mean difference: (0.06522, 0.07526), 𝑡-test of mean difference = 0 (versus not = 0), 𝑡 value = 28.13, 𝑃 value = 0.000
PSO algorithm versus ABC algorithm	HAZ	95% CI for mean difference: (0.05068, 0.06520), 𝑡-test of mean difference = 0 (versus not = 0), 𝑡 value = 16.05, 𝑃 value = 0.000
	Taper	95% CI for mean difference: (0.02703, 0.03450), 𝑡-test of mean difference = 0 (versus not = 0), 𝑡 value = 16.55, 𝑃 value = 0.000
ACO algorithm versus ABC algorithm	HAZ	95% CI for mean difference: (0.01633, 0.02440), 𝑡-test of mean difference = 0 (versus not = 0), 𝑡 value = 10.13, 𝑃 value = 0.000
	Taper	95% CI for mean difference: (0.01000, 0.01835), 𝑡-test of mean difference = 0 (versus not = 0), 𝑡 value = 6.82, 𝑃 value = 0.000