Part 20: Data Manipulation in Multi-Dimensional Aggregation

Author(s): Raj kumar Originally published on Towards AI. When financial analysts need to segment customer profitability across product lines and regions, or when risk managers aggregate exposure metrics across multiple hierarchies, they rely on advanced grouping techniques that go far beyond basic sum() and mean() operations. Part 20 explores the sophisticated aggregation patterns that transform raw transactional data into actionable business intelligence. This article demonstrates production-gr