Lecture 3（Hong Cheng）: 

PPT课件 Lecture3：

Lecture 3 (Coursera): 

本部分提供Couresra课程视频：

1) Introduction to Classification

https://www.coursera.org/learn/machine-learning-with-python/lecture/95g22/introduction-to-classification

2)  K-Nearest Neighbours

https://www.coursera.org/learn/machine-learning-with-python/lecture/s0q1d/k-nearest-neighbours

2)  Evaluation metrics in classification

https://www.coursera.org/learn/machine-learning-with-python/lecture/5iCQt/evaluation-metrics-in-classification