A Conjunction Method of Wavelet Transform-Particle Swarm Optimization-Support Vector Machine for Streamflow Forecasting

Table 2

Optimal parameters of SVM and WSVM models.

Model	Input variables	Output	Parameters
			𝜎	𝐶	𝜀
(i) SVM	(i) 𝑄𝑡−1, 𝑄𝑡−2, and 𝑄𝑡−3	𝑄𝑡	0.90156	2.3149	0.01
(ii) WSVM1	(ii) 𝑄𝑡−1(𝐴), 𝑄𝑡−2(𝐴), and 𝑄𝑡−3(𝐴)		0.01	46.8765	0.01
(iii) WSVM2	(iii) 𝑄𝑡−1(𝐴+𝐷3), 𝑄𝑡−2(𝐴+𝐷3), and 𝑄𝑡−3(𝐴+𝐷3)		28.4876	6.0929	0.01