HTN20190109 https://blog.hatena.ne.jp/HTN20190109/ HTN20190109の日記 https://htn20190109.hatenablog.com/ DL python3.11 import numpy as np class Sigmoid: def __init__(self): self.out = None def forward(self,x): out = 1 / (1+np.exp(-x) ) self.out = out return out def backward(self, dout): dx = dout * (1.0-self.out) * self.out return dx x1 = np.arange(-10,10,2) s = Sigmoid()y1 = s.forward(x1)z1 = s.backward(… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhtn20190109.hatenablog.com%2Fentry%2F2025%2F08%2F19%2F224035" title="活性化関数クラス - HTN20190109の日記" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2025-08-19 22:40:35 rich https://htn20190109.hatenablog.com/entry/2025/08/19/224035 1.0 100%