ZhangZhihuiAAA - 博客园

Machine Learning - How to Prune Regression Trees

摘要： Cost Complexity Pruning, ccp 阅读全文

posted @ 2025-07-21 10:15 ZhangZhihuiAAA 阅读(9) 评论(0) 推荐(0)

Machine Learning - Regression Trees

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posted @ 2025-07-20 15:54 ZhangZhihuiAAA 阅读(7) 评论(0) 推荐(0)

Machine Learning - Decision and Classification Trees

摘要： Gini impurity 阅读全文

posted @ 2025-07-20 08:51 ZhangZhihuiAAA 阅读(6) 评论(0) 推荐(0)

Machine Learning - Clustering with DBSCAN

摘要： ... 阅读全文

posted @ 2025-07-19 14:15 ZhangZhihuiAAA 阅读(6) 评论(0) 推荐(0)

Machine Learning - K-means Clustering

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posted @ 2025-07-19 11:18 ZhangZhihuiAAA 阅读(6) 评论(0) 推荐(0)

Machine Learning - t-SNE

摘要： t-SNE (t-Distributed Stochastic Neighbor Embedding) is a dimensionality reduction algorithm commonly used for visualizing high-dimensional data in 2D 阅读全文

posted @ 2025-07-18 21:01 ZhangZhihuiAAA 阅读(9) 评论(0) 推荐(0)

Machine Learning - MDS and PCoA

摘要： MDS, PCoA Hamming distance is a metric used to measure how many positions at which the corresponding elements (usually bits or characters) of two stri 阅读全文

posted @ 2025-07-18 17:59 ZhangZhihuiAAA 阅读(9) 评论(0) 推荐(0)

Machine Learning - Principal Component Analysis (PCA) Part II

摘要： import matplotlib.pyplot as plt import numpy as np import pandas as pd import random as rd from sklearn import preprocessing from sklearn.decompositio 阅读全文

posted @ 2025-07-16 10:50 ZhangZhihuiAAA 阅读(7) 评论(0) 推荐(0)

Machine Learning - Principal Component Analysis (PCA) Part I

摘要： SVD understand the variables vectors rather than scalers Step-by-step process to calculate eigenvalues in PCA ✅ Step 1: Standardize the data Before ap 阅读全文

posted @ 2025-07-13 22:01 ZhangZhihuiAAA 阅读(16) 评论(0) 推荐(0)

Machine Learning - Regularization: Elastic-Net Regression

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posted @ 2025-07-13 18:27 ZhangZhihuiAAA 阅读(7) 评论(0) 推荐(0)

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