Every year, Spotify releases “Wrapped,” an interactive infographic showing stats like your favourite artists and tracks you’ve listened to the most. There are ways to get hold of this data outside ...

In a detailed engineering post, Yelp shared how it built a scalable and cost-efficient pipeline for processing Amazon S3 ...

已经非常接近真实值了，如果继续微调，就可以无限接近真实值，虽然一般无法求得最优解，但现实中只是误差可以接受就可以了。通过现有的数据或资料，称为样本，通过尝试求解参数（局部最优解）的过程，就是机器学习的核心内容。误差值是用来控制每次调整参数的幅度。