这种稀疏性在工程上起到了关键作用，它物理上限制了残差分支的能量，隐式地防止了方差爆炸。这是一种“因为算不过来所以只算一点点，结果反而意外解决了稳定性问题”的经典工程案例。

China's auto exports remained resilient in 2025, particularly in new energy vehicles. In 2025, exports of NEVs doubled year ...

This photo taken on May 13, 2025 shows a view of a production line at the workshop of a vehicle company in Jiangdu District ...