Model-Based Extraction of Knowledge about the Effect of Cloud Application Context on Application Service Cost and Quality of Service

Table 6

Comparison of model accuracy.

Metric	Linear regression	Lasso	LARS	MARS	ANN
	Response time, MRS
MAE	243.39	476.62	181.11	181.47	221.05
MAPE (%)	9.33	19.82	5.79	5.61	6.24
RMSE	368.56	653.35	263.47	270.47	363.62
Adj. R^2	0.9942	0.9817	0.9968	0.9969	0.9953
	Cost, MRS
MAE	142.98	113.68	99.00	106.25	124.91
MAPE (%)	22.82	13.47	6.33	15.19	10.66
RMSE	270.99	257.48	212.86	200.94	202.71
Adj. R^2	0.9963	0.9967	0.9977	0.9980	0.9979
	Response time, video streaming
MAE	266.80	287.26	168.65	104.87	221.05
MAPE (%)	10.54	20.50	11.98	5.09	6.24
RMSE	495.25	401.45	226.01	149.86	363.62
Adj. R^2	0.9588	0.9729	0.9914	0.9962	0.9867
	Cost, video streaming
MAE	331.24	234.18	123.59	72.77	531.55
MAPE (%)	10.98	5.88	3.84	2.02	17.26
RMSE	463.54	333.45	209.41	186.87	719.94
Adj. R^2	0.9982	0.9991	0.9996	0.9997	0.9750

Best values for each model and metric are marked in bold.