2019-07-31 13:14:46

docs/12.3.md

 # 风险
 
-> 原文：[https://www.bookmark.ds100.org/ch/12/prob_risk.html](https://www.bookmark.ds100.org/ch/12/prob_risk.html)
+> 原文：[https://www.textbook.ds100.org/ch/12/prob_risk.html](https://www.textbook.ds100.org/ch/12/prob_risk.html)
 
 ```
 # HIDDEN

docs/13.2.md

 # 用梯度下降拟合线性模型
 
-> 原文：[https://www.bookmark.ds100.org/ch/13/linear_grad.html](https://www.bookmark.ds100.org/ch/13/linear_grad.html)
+> 原文：[https://www.textbook.ds100.org/ch/13/linear_grad.html](https://www.textbook.ds100.org/ch/13/linear_grad.html)
 
 ```
 # HIDDEN

docs/13.4.md

 # 最小二乘-几何透视
 
-> 原文：[https://www.bookmark.ds100.org/ch/13/linear_projection.html](https://www.bookmark.ds100.org/ch/13/linear_projection.html)
+> 原文：[https://www.textbook.ds100.org/ch/13/linear_projection.html](https://www.textbook.ds100.org/ch/13/linear_projection.html)
 
 ```
 # HIDDEN

docs/14.1.md

 # 沃尔玛数据集
 
-> 原文：[https://www.bookmark.ds100.org/ch/14/feature ou one_hot.html](https://www.bookmark.ds100.org/ch/14/feature ou one_hot.html)
+> 原文：[https://www.textbook.ds100.org/ch/14/feature ou one_hot.html](https://www.textbook.ds100.org/ch/14/feature ou one_hot.html)
 
 ```
 # HIDDEN

docs/14.2.md

 # 预测冰淇淋评级
 
-> 原文：[https://www.bookmark.ds100.org/ch/14/feature_polynomy.html](https://www.bookmark.ds100.org/ch/14/feature_polynomy.html)
+> 原文：[https://www.textbook.ds100.org/ch/14/feature_polynomy.html](https://www.textbook.ds100.org/ch/14/feature_polynomy.html)
 
 ```
 # HIDDEN

docs/14.md

 # 特征工程
 
-> 原文：[https://www.bookmark.ds100.org/ch/14/feature_engineering.html](https://www.bookmark.ds100.org/ch/14/feature_engineering.html)
+> 原文：[https://www.textbook.ds100.org/ch/14/feature_engineering.html](https://www.textbook.ds100.org/ch/14/feature_engineering.html)
 
 ```
 # HIDDEN

docs/15.1.md

 # 风险和损失最小化
 
-> 原文：[https://www.bookmark.ds100.org/ch/15/bias_risk.html](https://www.bookmark.ds100.org/ch/15/bias_risk.html)
+> 原文：[https://www.textbook.ds100.org/ch/15/bias_risk.html](https://www.textbook.ds100.org/ch/15/bias_risk.html)
 
 ```
 # HIDDEN

docs/15.3.md

 # 交叉验证
 
-> 原文：[https://www.bookmark.ds100.org/ch/15/bias_cv.html](https://www.bookmark.ds100.org/ch/15/bias_cv.html)
+> 原文：[https://www.textbook.ds100.org/ch/15/bias_cv.html](https://www.textbook.ds100.org/ch/15/bias_cv.html)
 
 ```
 # HIDDEN

docs/15.md

 # 偏方差权衡
 
-> 原文：[https://www.bookmark.ds100.org/ch/15/bias_intro.html](https://www.bookmark.ds100.org/ch/15/bias_intro.html)
+> 原文：[https://www.textbook.ds100.org/ch/15/bias_intro.html](https://www.textbook.ds100.org/ch/15/bias_intro.html)
 
 ```
 # HIDDEN

docs/16.1.md

 # 正则化直觉
 
-> 原文：[https://www.bookmark.ds100.org/ch/16/reg_invituation.html](https://www.bookmark.ds100.org/ch/16/reg_invituation.html)
+> 原文：[https://www.textbook.ds100.org/ch/16/reg_invituation.html](https://www.textbook.ds100.org/ch/16/reg_invituation.html)
 
 ```
 # HIDDEN

docs/16.3.md

 # L1 正则化：LASSO 回归
 
-> 原文：[https://www.bookmark.ds100.org/ch/16/reg_lasso.html](https://www.bookmark.ds100.org/ch/16/reg_lasso.html)
+> 原文：[https://www.textbook.ds100.org/ch/16/reg_lasso.html](https://www.textbook.ds100.org/ch/16/reg_lasso.html)
 
 ```
 # HIDDEN

docs/16.md

 # 正规化
 
-> 原文：[https://www.bookmark.ds100.org/ch/16/reg_intro.html](https://www.bookmark.ds100.org/ch/16/reg_intro.html)
+> 原文：[https://www.textbook.ds100.org/ch/16/reg_intro.html](https://www.textbook.ds100.org/ch/16/reg_intro.html)
 
 ```
 # HIDDEN

docs/17.1.md

 # 概率回归
 
-> 原文：[https://www.bookmark.ds100.org/ch/17/classification_prob.html](https://www.bookmark.ds100.org/ch/17/classification_prob.html)
+> 原文：[https://www.textbook.ds100.org/ch/17/classification_prob.html](https://www.textbook.ds100.org/ch/17/classification_prob.html)
 
 ```
 # HIDDEN

docs/17.3.md

 # Logistic 模型的损失函数
 
-> 原文：[https://www.bookmark.ds100.org/ch/17/classification_cost.html](https://www.bookmark.ds100.org/ch/17/classification_cost.html)
+> 原文：[https://www.textbook.ds100.org/ch/17/classification_cost.html](https://www.textbook.ds100.org/ch/17/classification_cost.html)
 
 ```
 # HIDDEN

docs/17.4.md

 # 使用逻辑回归
 
-> 原文：[https://www.bookmark.ds100.org/ch/17/classification_log_reg.html](https://www.bookmark.ds100.org/ch/17/classification_log_reg.html)
+> 原文：[https://www.textbook.ds100.org/ch/17/classification_log_reg.html](https://www.textbook.ds100.org/ch/17/classification_log_reg.html)
 
 ```
 # HIDDEN

docs/17.5.md

 # 经验概率分布的近似
 
-> 原文：[https://www.bookmark.ds100.org/ch/17/classification_cost_justification.html](https://www.bookmark.ds100.org/ch/17/classification_cost_justification.html)
+> 原文：[https://www.textbook.ds100.org/ch/17/classification_cost_justification.html](https://www.textbook.ds100.org/ch/17/classification_cost_justification.html)
 
 ```
 # HIDDEN

docs/17.6.md

 # 拟合 Logistic 模型
 
-> 原文：[https://www.bookmark.ds100.org/ch/17/classification_sgd.html](https://www.bookmark.ds100.org/ch/17/classification_sgd.html)
+> 原文：[https://www.textbook.ds100.org/ch/17/classification_sgd.html](https://www.textbook.ds100.org/ch/17/classification_sgd.html)
 
 ```
 # HIDDEN

docs/17.8.md

 # 多类分类
 
-> 原文：[https://www.bookmark.ds100.org/ch/17/classification_multicolass.html](https://www.bookmark.ds100.org/ch/17/classification_multicolass.html)
+> 原文：[https://www.textbook.ds100.org/ch/17/classification_multicolass.html](https://www.textbook.ds100.org/ch/17/classification_multicolass.html)
 
 ```
 # HIDDEN

docs/17.md

 # 分类
 
-> 原文：[https://www.bookmark.ds100.org/ch/17/classification_intro.html](https://www.bookmark.ds100.org/ch/17/classification_intro.html)
+> 原文：[https://www.textbook.ds100.org/ch/17/classification_intro.html](https://www.textbook.ds100.org/ch/17/classification_intro.html)
 
 ```
 # HIDDEN

docs/18.1.md

 # 假设检验和置信区间
 
-> 原文：[https://www.bookmark.ds100.org/ch/18/hyp_introduction.html](https://www.bookmark.ds100.org/ch/18/hyp_introduction.html)
+> 原文：[https://www.textbook.ds100.org/ch/18/hyp_introduction.html](https://www.textbook.ds100.org/ch/18/hyp_introduction.html)
 
 ```
 # HIDDEN

docs/18.2.md

 # 置换检验
 
-> 原文：[https://www.bookmark.ds100.org/ch/18/hyp_introduction_part2.html](https://www.bookmark.ds100.org/ch/18/hyp_introduction_part2.html)
+> 原文：[https://www.textbook.ds100.org/ch/18/hyp_introduction_part2.html](https://www.textbook.ds100.org/ch/18/hyp_introduction_part2.html)
 
 ```
 # HIDDEN

docs/18.4.md

 # 学生化自举
 
-> 原文：[https://www.bookmark.ds100.org/ch/18/hyp_studentized.html](https://www.bookmark.ds100.org/ch/18/hyp_studentized.html)
+> 原文：[https://www.textbook.ds100.org/ch/18/hyp_studentized.html](https://www.textbook.ds100.org/ch/18/hyp_studentized.html)
 
 ```
 # HIDDEN

docs/18.5.md

 # P-HACKING
 
-> 原文：[https://www.bookmark.ds100.org/ch/18/hyp_k.html](https://www.bookmark.ds100.org/ch/18/hyp_k.html)
+> 原文：[https://www.textbook.ds100.org/ch/18/hyp_k.html](https://www.textbook.ds100.org/ch/18/hyp_k.html)
 
 ```
 # HIDDEN

docs/18.md

 # 统计推断
 
-> 原文：[https://www.bookmark.ds100.org/ch/18/hyp_intro.html](https://www.bookmark.ds100.org/ch/18/hyp_intro.html)
+> 原文：[https://www.textbook.ds100.org/ch/18/hyp_intro.html](https://www.textbook.ds100.org/ch/18/hyp_intro.html)
 
 ```
 # HIDDEN

docs/19.md

 # 向量空间回顾
 
-> 原文：[https://www.bookmark.ds100.org/ch/19/vector_space_review.html](https://www.bookmark.ds100.org/ch/19/vector_space_review.html)
+> 原文：[https://www.textbook.ds100.org/ch/19/vector_space_review.html](https://www.textbook.ds100.org/ch/19/vector_space_review.html)
 
 ```
 # HIDDEN

docs/20.3.md

 # Matplotlib
 
-> 原文：[https://www.bookmark.ds100.org/ch/20/ref_matplotlib.html](https://www.bookmark.ds100.org/ch/20/ref_matplotlib.html)
+> 原文：[https://www.textbook.ds100.org/ch/20/ref_matplotlib.html](https://www.textbook.ds100.org/ch/20/ref_matplotlib.html)
 
 ```
 # HIDDEN

docs/20.md

 # 参考表
 
-> 原文：[https://www.bookmark.ds100.org/ch/20/ref_intro.html](https://www.bookmark.ds100.org/ch/20/ref_intro.html)
+> 原文：[https://www.textbook.ds100.org/ch/20/ref_intro.html](https://www.textbook.ds100.org/ch/20/ref_intro.html)
 
 ```
 # HIDDEN

docs/8.1.md

 # python 字符串方法
 
-> 原文：[https://www.bookmark.ds100.org/ch/08/text_strings.html](https://www.bookmark.ds100.org/ch/08/text_strings.html)
+> 原文：[https://www.textbook.ds100.org/ch/08/text_strings.html](https://www.textbook.ds100.org/ch/08/text_strings.html)
 
 ```
 # HIDDEN

docs/8.2.md

 # 正则表达式
 
-> 原文：[https://www.bookmark.ds100.org/ch/08/text_regex.html](https://www.bookmark.ds100.org/ch/08/text_regex.html)
+> 原文：[https://www.textbook.ds100.org/ch/08/text_regex.html](https://www.textbook.ds100.org/ch/08/text_regex.html)
 
 ```
 # HIDDEN

docs/8.3.md

 # regex 和 python
 
-> 原文：[https://www.bookmark.ds100.org/ch/08/text_re.html](https://www.bookmark.ds100.org/ch/08/text_re.html)
+> 原文：[https://www.textbook.ds100.org/ch/08/text_re.html](https://www.textbook.ds100.org/ch/08/text_re.html)
 
 ```
 # HIDDEN

docs/8.md

 # 处理文本
 
-> 原文：[https://www.bookmark.ds100.org/ch/08/text_intro.html](https://www.bookmark.ds100.org/ch/08/text_intro.html)
+> 原文：[https://www.textbook.ds100.org/ch/08/text_intro.html](https://www.textbook.ds100.org/ch/08/text_intro.html)
 
 ```
 # HIDDEN

docs/9.2.md

 # SQL
 
-> 原文：[https://www.bookmark.ds100.org/ch/09/sql_basics.html](https://www.bookmark.ds100.org/ch/09/sql_basics.html)
+> 原文：[https://www.textbook.ds100.org/ch/09/sql_basics.html](https://www.textbook.ds100.org/ch/09/sql_basics.html)
 
 ```
 # HIDDEN

docs/9.md

 # 关系数据库和 SQL
 
-> 原文：[https://www.bookmark.ds100.org/ch/09/sql_intro.html](https://www.bookmark.ds100.org/ch/09/sql_intro.html)
+> 原文：[https://www.textbook.ds100.org/ch/09/sql_intro.html](https://www.textbook.ds100.org/ch/09/sql_intro.html)
 
 ```
 # HIDDEN