在网上找到一篇好文,直接粘贴过来,加上一些补充和自己的理解,算作此文. My education in the fundamentals of machine learning has mainly come from Andrew Ng’s excellent Coursera course on the topic. One thing that wasn’t covered in that course, though, was the topic of “boosting” which…
import numpy as np import matplotlib.pyplot as plt from sklearn.datasets.samples_generator import make_classification def initialize_params(dims): w = np.zeros((dims, 1)) b = 0 return w, b def sigmoid(x): z = 1 / (1 + np.exp(-x)) return z def logisti…
