哈工大2022秋机器学习实验作业
HIT Fall 2022 Semester Machine Learning Lab Assignment
实验1：多项式拟合正弦曲线
lab1:Fitting a sine curve to a polynomial
实验2：逻辑回归
Lab2:Logistic regression
实验3：k-means聚类
Lab3:k-means clustering
实验4：PCA主成分分析
Lab4:Principal component analysis
要求是只调用math/numpy这一类数学运算库实现相关的机器学习算法，而不能调用现成的机器学习库(如sklearn等)。算法说明详见实验报告。
The requirement is to only use math/numpy modules to implement the relevant machine learning algorithms,
rather than using existing machine learning modules such as sklearn.