缺点：容易饱和（输入过大或过小时梯度接近0，导致梯度消失）
Мерц резко сменил риторику во время встречи в Китае09:25
，这一点在safew官方版本下载中也有详细论述
3.Wordfence SecurityWordfence Security is a WordPress firewall and security scanner that keeps your site safe from malicious hackers, spam, and other online threats. This Plugin comes with a web application firewall (WAF) called tthread Defence Feed that helps to prevents brute force attacks by ensuring you set stronger passwords and limiting login attempts. It searches for malware and compares code, theme, and plugin files with the records in the WordPress.org repository to verify their integrity and reports changes to you.
Фото: Константин Чалабов / РИА Новости