处理缺失的数据并不是一件容易的事。方法的范围从简单的均值插补和观察值的完全删除到像MICE这样的更高级的技术。解决问题的挑战性是选择使用哪种方法。今天，我们将探索一种简单但高效的填补缺失数据的方法-KNN算法。 KNN代表“ K最近邻居”，这是一种 ...

Cai says violent and disturbing material appeared on his feeds "out of nowhere" It was 2022 and Cai, then 16, was scrolling on his phone. He says one of the first videos he saw on his social media ...