摘要:
Gradient Descent For Multiple Variables The gradient descent equation itself is generally the same form; we just have to repeat it for our 'n' feature 阅读全文
摘要:
我们可以使用代价函数来衡量我们的假设函数的准确性。这取决于x的输入和实际输出y的假设的所有结果的平均差异(实际上是平均值的平均值)。 To break it apart, it is 12 x¯ where x¯ is the mean of the squares of hθ(xi)−yi , o 阅读全文
摘要:
''' #data = open("yesterday",encoding="utf-8").read() f = open("yesterday2",'a',encoding="utf-8") #文件句柄 #a = append 追加 f.write("\nwhen i was young i listen to the radio\n") data = f.read() print('--... 阅读全文