According to a study commissioned by Reddit and marketing intelligence company Profound, Reddit was found to be the number one most cited source across AI platforms such as Google AI Overviews and Perplexity.
刘年丰：对。2025年，我们看到很多机器人看似进入干活场景，其实还是在POC（概念验证）。到了2026年，考验的是复购，像搬箱子这样的场景，要在2026年被彻底解决。
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It has also trimmed its five-year capital spending plan to £1.7bn from £2bn by delaying investment in electric vehicle technology.
优点：输出在 (−1,1)，比 sigmoid 居中，对梯度更友好