优点：输出在 (−1,1)，比 sigmoid 居中，对梯度更友好
The US secretary of state Marco Rubio told ambassadors in the Middle East to stop making public comments that could inflame tensions and undermine Donald Trump’s pressure on Iran to relinquish its capacity to produce a nuclear weapon, according to a memo obtained by the Guardian.
。业内人士推荐体育直播作为进阶阅读
These 'avatars' will fly around the moon with NASA's Artemis 2 astronauts
这意味着，任何试图对美妥协的领导人不仅无法获得革命卫队的支持，反而可能在未来竞争最高领袖的政治斗争中被迅速边缘化。更重要的是，在当前形势下，对美强硬恰恰是获取国内保守派支持、巩固执政合法性的政治资本。