之前有老师提出要做SOM分析，最后卡在code plot只能出segment plot却出不来line plot。查了下，没看到解决方案。今天看了下源码，设置了一个参数，得到趋势图。也顺便学习了SOM分析的整个过程，整理下来，以备以后用到。 SOM (Self-Organizing Feature Map,自组织特征图)是基于神经网络方式的数据矩阵和可视化方式。与其它类型的中心点聚类算法如K-me ...

Even more noteworthy is that on the day of the Claude outage, the xAI official status page showed that Grok (Web/iOS/Android) also experienced a "temporarily unavailable" event lasting about 40 ...

Editor's Note: China will hold its annual Two Sessions in early March. Ahead of this year's key political meetings, CGTN ...

In warmer parts of China where heavy snowfall is rare, ski resorts are drawing growing crowds, fueled by advances in ...

短短一年内，特朗普政府高调打击移民的举措，已经使美国新增移民人数骤然放缓。其对美国人口结构造成的后果，已经开始在经济数据中有所体现，并可能进一步加剧美国38.8万亿美元（且仍在攀升）的国家债务困境。

"Continuous advances in snowmaking equipment have reduced the industry's reliance on high-altitude terrain, allowing winter attractions to move closer to cities," said Xu Xin, head of the ice and snow ...

学校引入科技设备，本意是为学习提供助力，但这些设备最终反而对学习产生了负面影响。

当前，中国经济正处于结构转型与动能转换的关键阶段，市场呈现出复杂而多元的态势。一方面，供需关系的动态调整成为企业共同面对的经营课题；另一方面，中国供应链的韧性与创新能力仍在持续提升，为在华企业提供了独特的竞争优势。