136
Zhang
et al
.,
Improved online sequential extreme learning machine for simulation of daily reference evapotranspiration
Tecnología y Ciencias del Agua
, vol. VIII, núm. 2, marzo-abril de 2017, pp. 127-140
•
ISSN 2007-2422
For Hanzhong, ISO-ELM was closer to the
FAO-56 PM
ET
0 of
R
2
= 0.9911, followed by the
Hargreaves, ELM, and LSSVMmodels. The Mc
Cloud and Priestley-Taylor estimates were the
least accurate.
For Hanzhong, ISO-ELM was closer to the
FAO-56 PM
ET
0 with
R
2
= 0.9905, followed by the
ELM, LSSVM, Priestley-Taylor, Hargreaves and
Mc Cloud models, which had
R
2
values of 0.9547,
0.9488, 0.8804, 0.8335 and 0.5577, respectively.
Figure 3. The FAO-56 PM
ET
0 and estimated ET0 values of Ankang.
