# Page Not Found

The URL `7-1` does not exist.

You might be looking for one of these pages:
- [7-1](https://windmising.gitbook.io/liu-yu-bo-play-with-machine-learning/src/chapter7-1/7-1.md)
- [第六章：梯度下降法](https://windmising.gitbook.io/liu-yu-bo-play-with-machine-learning/src/chapter6/6-1.md)
- [主成分分析法 PCA Principal Component Analysis](https://windmising.gitbook.io/liu-yu-bo-play-with-machine-learning/src/chapter7/7-0.md)
- [第八章：多项式回归与模型泛化](https://windmising.gitbook.io/liu-yu-bo-play-with-machine-learning/src/chapter8/8-1.md)
- [第九章：逻辑回归](https://windmising.gitbook.io/liu-yu-bo-play-with-machine-learning/src/chapter9/9-1.md)

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