Shares of U.S. hyperscalers seem to have put DeepSeek in the rearview mirror. But if you look closely, a different story ...

张书聪，对外经济贸易大学统计学院数据科学系副教授，2018年博士毕业于上海财经大学，毕业之后进入北京大学从事博士后研究，主要研究方向为微生物组数据、成分数据、图模型等。研究成果发表在JASA，JMVA等国际权威期刊上。

The observed near flatness of galactic rotation curves has long been interpreted as evidence for large amounts of non-baryonic dark matter. Here we show that this phenom ...