机器学习：Kmeans聚类和混合高斯模型

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参考资料

1. K-Means Clustering in Python: A Practical Guide
2. In Depth: k-Means Clustering
3. In Depth: Gaussian Mixture Models
4. Build Better and Accurate Clusters with Gaussian Mixture Models
5. GMM by ethen8181
6. 如何求协方差矩阵
7. Clustering (4): Gaussian Mixture Models and EM

k-means only considers the mean to update the centroid while GMM takes into account the mean as well as the variance of the data.