Net international migration to the U.S. peaked at 2.7 million new entries in 2024, but has since sharply declined. It fell to 1.3 million last summer, according to January Census data, and then turned net negative, according to research from Brookings, meaning more people are leaving the U.S. than coming in. The private sector has weighed in, too, with Goldman Sachs economists reporting last week that immigration policies put in place over the past year have resulted in an 80% decline in net migration relative to the historical average.
Anthropic 点名的三家公司，抓取的重心都落在代理行为 (agentic behavior) 这同一个方向上，包括 AI 自主规划、工具调用、分解复杂任务并逐步执行的能力等。
。同城约会是该领域的重要参考
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* 时间复杂度: O(nlogn) 空间复杂度: O(n) 稳定: ✓