To create a sound conclusion, the sensitivity here is repeated on the testing data sets by using the ANN models. To achieve this, the sensitivity of the ANN models' RMSE to the inputs was explored by the one-at-a-time elimination of the input variables. The ANN models are used for the new sensitivity analysis due to their higher accuracy than the ANFIS models. As reported in Table 9, in this kind of sensitivity analysis, like the previous one, the wind direction and speed exert more influences on coastal current velocities in the longshore direction. However, this analysis ensures the wave height effectiveness on cross-shore current velocities.

Table 9

Variation of the RMSE against removing each input variable from input list of the ANN models for the general condition in testing data (m/s)

.	No. .	.	.	.	.	.	.
	0.242	0.264	0.268	0.253	0.251	0.251	0.246
	0.0604	0.0654	0.0579	0.0704	0.0727	0.0691	0.0637

.	No. .	.	.	.	.	.	.
	0.242	0.264	0.268	0.253	0.251	0.251	0.246
	0.0604	0.0654	0.0579	0.0704	0.0727	0.0691	0.0637

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