基于客观阈值与随机森林Gini指标的水体遥感指数对比
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王一帆,徐涵秋
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Comparison of Remote Sensing Water Indices based on Objective Threshold Value and the Random Forest Gini Coefficient
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Yifan Wang,Hanqiu Xu
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表5 S2A影像的Gini指标重要性排序
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Table 5 Variable importance of 13 feature bands ranked by Gini coefficients of random forest based on S2A images
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| 特征波段 | 福州 | 弗伦奇岛 | 重要性均值 | 重要性排序 |
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| Gini值 | 重要性 | Gini值 | 重要性 |
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| AWEI | 469.75 | 6 | 80.81 | 9 | 7.5 | 7 | | MNDWI | 3318.19 | 1 | 133.23 | 1 | 1 | 1 | | WI2015 | 945.87 | 5 | 71.43 | 11 | 8 | 8 | | Band2 | 0.55 | 12 | 0.00 | 13 | 12.5 | 13 | | Band 3 | 4.30 | 11 | 0.00 | 12 | 11.5 | 12 | | Band 4 | 0.37 | 13 | 97.35 | 3 | 8 | 9 | | Band 5 | 16.97 | 10 | 75.26 | 10 | 10 | 11 | | Band 6 | 264.31 | 7 | 103.53 | 2 | 4.5 | 4 | | Band 7 | 220.35 | 8 | 94.58 | 4 | 6 | 6 | | Band 8 | 43.68 | 9 | 81.06 | 8 | 8.5 | 10 | | Band 8a | 1547.88 | 4 | 90.71 | 7 | 5.5 | 5 | | Band 11 | 2495.78 | 2 | 92.94 | 5 | 3.5 | 2 | | Band 12 | 1972.52 | 3 | 90.88 | 6 | 4.5 | 3 |
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