Support Vector Machine combined with K-Nearest Neighbors for Solar Flare Forecasting

Support Vector Machine combined with K-Nearest Neighbors for Solar Flare Forecasting
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支持向量机结合 K 最近邻进行太阳耀斑预测

DOI:
10.1088/1009-9271/7/3/15
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发表时间:
2007-06
期刊:
Chinese Journal of Astronomy and Astrophysics
影响因子:
--
通讯作者:
--
中科院分区:
其他
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将支持向量机(SVM)与K近邻(KNN)相结合,建立了太阳耀斑预报模型。SVM-KNN方法在证明了SVM与KNN之间关系的基础上,根据测试样本在特征空间中的分布情况,利用KNN算法的优点,对SVM分类算法进行了改进。在我们的耀斑预报研究中,太阳黑子和10厘米射电流量在太阳活动周23期间的观测数据作为预测因子,并预测是否会发生一个M级耀斑的活动区在两天内。将SVM-KNN方法与基于SVM和神经网络的方法进行了比较。测试结果表明,SVM-KNN方法的预测正确率高于其他两种方法。该方法有望成为一种实用的未来预测模型。
A method combining the support vector machine (SVM) the K-Nearest Neighbors (KNN), labelled the SVM-KNN method, is used to construct a solar flare forecasting model. Based on a proven relationship between SVM and KNN, the SVM-KNN method improves the SVM algorithm of classification by taking advantage of the KNN algorithm according to the distribution of test samples in a feature space. In our flare forecast study, sunspots and 10 cm radio flux data observed during Solar Cycle 23 are taken as predictors, and whether an M class flare will occur for each active region within two days will be predicted. The SVM-KNN method is compared with the SVM and Neural networks-based method. The test results indicate that the rate of correct predictions from the SVM-KNN method is higher than that from the other two methods. This method shows promise as a practicable future forecasting model.
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发表时间: 2001-12
影响因子: --
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