The hourly average solar wind velocity prediction based on support vector regression method
The hourly average solar wind velocity prediction based on support vector regression method
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基于支持向量回归方法的日均太阳风速预测
DOI:
10.1111/j.1365-2966.2011.18359.x
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发表时间:
2011-06
期刊:
影响因子:
--
通讯作者:
王劲松
中科院分区:
文献类型:
--
作者:
刘丹丹;黄聪;吕建永;王劲松
A new neural network technique, support vector regression (SVR), is applied to forecast the solar wind (SW) velocity. SVR is a non-linear efficient tool for high data processing based on statistical learning theory. Its advantage is that the input only requires several periods data (about four 27-d solar-rotation periods to SW velocity prediction in this study), and the prediction is quite reliable. In our work, we deliberately choose the typical SW data covering all main space weather conditions: the SW data during the 9 yr from 1998 to 2006, which includes the periods of the SW speed variation associated with high-speed streams from coronal hole and coronal mass ejections. The performance of the SVR is measured by calculating the absolute average fractional deviation and correlation coefficient between the SVR model and observed SW velocity. We find that the predicted velocity values are over 90 per cent of the observed ones, i.e. the new approach is accurate and reliable in forecasting SW velocity. Based on the error difference, it can be concluded that the SVR technique can lend itself to future space weather forecasting models.
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影响因子:
--
作者:
V. Gavrishchaka;S. B. Ganguli
通讯作者:
V. Gavrishchaka;S. B. Ganguli
影响因子:
3.7
作者:
P. Wintoft;H. Lundstedt
通讯作者:
P. Wintoft;H. Lundstedt
DOI:
10.1086/171430
发表时间:
1992-06
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Y.-M. Wang;N. Sheeley
通讯作者:
Y.-M. Wang;N. Sheeley
影响因子:
2.5
作者:
M. Dryer
通讯作者:
M. Dryer
影响因子:
2.8
作者:
Arge, CN;Pizzo, VJ
通讯作者:
Pizzo, VJ