tianchi_garbage's People
tianchi_garbage's Issues
svd 操作的疑问
hi,
看了您代码中用了svd 的技巧,有些疑问:
- train_x = s * v * dh => train_x * dh' = s * v 相当于把s * v当做了新的训练集? 对训练和测试集合做了这些操作的作用是什么? 是对特征向量做压缩? 体现了数据的全局特性? 能简单解释下吗?
- 训练和测试集做了svd 的相关变化,那么在预测时怎么操作呢? 预测时如果不做操作,那么训练和预测回不一致,做的话,svd是对矩阵操作,也没看到相关代码
请问我在win10+py3.7 如何训练?谢谢
请问我在win10+py3.7 本地没有数据集 如何训练?谢谢
您有QQ吗?向您请教,谢谢
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