关于样本随机选择 假设人口中的51%的男性和48%的女性，如果问卷调查为50%男性，50%女性，则在采样的时候就存在Bias，这将会直接导致后续的准确率。

Supervised learning k-Nearest Neighbors Linear Regression Logistic Regression SVM Decision Tree & Random Tree Neural Network Unsuervised learning Cluster K-Means DBSCAN Hierarchical Cluster Analysis (HCA) Anomaly section and novelty detection One-class SVM Isolation Forest Visualization and dimensionality reduction …