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Table 2

Performance of the ANN models

Model		RMSE	Correlation coefficient (R)
Model		RMSE	Training	Testing	Validation	All
1 a)	Prediction of optimum alum dosage	26	0.92	0.90	0.80	0.90
1 b)	Prediction of treated greywater parameters by alum	9.6	0.99	0.97	0.98	0.99
2 a)	Prediction of optimum PACl dosage	15.9	0.93	0.89	0.86	0.90
2 b)	Prediction of treated greywater parameters by PACl	10.4	0.99	0.97	0.98	0.99

Model		RMSE	Correlation coefficient (R)
Model		RMSE	Training	Testing	Validation	All
1 a)	Prediction of optimum alum dosage	26	0.92	0.90	0.80	0.90
1 b)	Prediction of treated greywater parameters by alum	9.6	0.99	0.97	0.98	0.99
2 a)	Prediction of optimum PACl dosage	15.9	0.93	0.89	0.86	0.90
2 b)	Prediction of treated greywater parameters by PACl	10.4	0.99	0.97	0.98	0.99