Data sciencefromHackernoon2 years agoDeep Dive into MS MARCO Web Search: Unpacking Dataset Characteristics | HackerNoonThe MS MARCO dataset reveals considerable multilingual disparity and significant data skew, highlighting challenges in model evaluation and training.
Data sciencefromMedium2 months agoApache Spark: Fix data skew issue using salting technique (practical example)Data skew leads to performance issues in Spark when certain keys dominate the distribution during shuffles.Salting can effectively reduce data skew by distributing heavy keys across multiple partitions.