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由于建档立卡录入错误,需要对样本数据进行筛选 1)人均年收入过高(大于7000)、过低(小于等于0)的删除 采用此方法后,建模数据从71648条变为70864条,减少784条,占1.1%,效果提高5%。
误差率 准确度(筛选前) 准确度(筛选后) 10% 59.82% 64.70% 20% 80.68% 82.98% 30% 88.71% 89.95% 40% 91.54% 92.47% 50% 93.19% 94.09% 60% 94.32% 95.12% 70% 95.09% 95.88% 80% 95.72% 96.39% 90% 96.23% 96.83% 100% 96.69% 97.13%
2)人均年收入除以100后,查看分布,少于5次的不纳入模型 采用此方法后,建模数据从70915条变为70864条,减少51条,仅占0.07%,对准确度的提升也微乎其微,甚至有的还下降,因此弃用。
误差率 准确度(筛选后) 准确度(二次筛选后) 10% 64.70% 64.85% 20% 82.98% 83.27% 30% 89.95% 89.77% 40% 92.47% 92.34% 50% 94.09% 93.99% 60% 95.12% 94.99% 70% 95.88% 95.77% 80% 96.39% 96.32% 90% 96.83% 96.75% 100% 97.13% 97.07%
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The text was updated successfully, but these errors were encountered: