As private schools proliferate, states are taking a hands-off approach to regulating them. School founders — in one case, a woman prosecuted for sexual abuse — often aren’t screened. Some states can’t ...

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The NASCAR Cup Series’ In-Season Challenge returns for its second season in 2026, bringing a five-race, bracket-style tournament to TNT Sports’ portion of the summer schedule. Thirty-two drivers ...

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agent 就是你写的那段程序，trainer 就是一个 actor，reward 是你在 Env 或 ChatAgent 里随手写的任意 Python。剩下的活儿三个大件全包了。README 里反复强调一个数字：大约 8600 行 RL 代码（推文里说的 9K 是个约数），却能撑到 1T 级别的 MoE。 OpenRLHF 的 ...