Relevance Vector Machine Based Analyses of MRR and SR of Electrodischarge Machining Designed by Response Surface Methodology

Table 5

Analysis of variance (ANOVA) for MRR and SR.

Source	MRR (mm^3/min)			SR (μm)
	𝐹	𝑃	% of contribution	𝐹	𝑃	% of contribution
𝐼𝑝	10377.67	0.000	84.34	2145.29	0.000	85.84
𝑇on	377.47	0.000	4.13	120.39	0.000	3.84
tau	Insignificant			14.87	0.002	0.224
𝐼𝑝∗𝐼𝑝				199.47	0.000	6.77
𝑇on∗𝑇on	653.71	0.000	5.8	Insignificant
𝐼𝑝∗𝑇on	662.65	0.000	5.58	60.75	0.000	2.04
𝐼𝑝∗tau	Insignificant			24.67	𝐼𝑝∗tau	0.84
	𝑆=0.05698, 𝑅^2=99.87, 𝑅^2(adj)=99.84			𝑆=0.20722, 𝑅^2=99.56, 𝑅^2(adj)=99.36

𝐹: it is a test to determine whether the interaction and main effects are significant.
𝑃: probability of obtaining a test statistic that at least as extreme as the actual calculated value, if the null hypothesis is true.
𝑆: standard deviation error.
𝑅²: the amount of variation seen in MRR and SR and is explained by input factor.
𝑅²(adj): modified 𝑅² that has been adjusted for a number of terms in the model.