逻辑回归是一种被广泛使用的分类算法，本次实验自己根据数学公式实现逻辑回归，并与sklearn库中的LogisticRegression库函数对比发现，自己实现的逻辑回归函数在本数据集中分类准确率更高。
spambase.data为数据集
test.py为进行二分类的程序文件
likely_function.png为程序导出的训练过程中似然函数值的变化曲线
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