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Data Engineering Blog

Articles on distributed architectures, real-time event streaming, modern lakehouses, data reliability, and query optimization.

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The Hessian Matrix Mathematical Foundations and Curvature Optimization Visual
Mathematical Foundations Featured
10 min read

The Hessian Matrix (H-Matrix): Mathematical Foundations, Curvature Analysis & Second-Order Optimization in Data Science

A mathematically rigorous deep dive into the Hessian Matrix, multivariable Taylor expansions, eigenvalue spectrums, Newton-Raphson optimization, Quasi-Newton L-BFGS, and Fisher Information in modern Data Science and Machine Learning.

By Rahul Das Read Article
Database Normalization vs Denormalization and Star Schema Lakehouse Visual
Data Architecture
10 min read

Mastering Database Normalization & Analytical Denormalization: From 1NF to BCNF and Modern Lakehouse Star Modeling

An in-depth architectural guide exploring relational normalization forms (1NF, 2NF, 3NF, BCNF) to eliminate modification anomalies, contrasted with analytical denormalization, dimensional star schemas, and modern lakehouse performance optimization.

By Rahul Das Read Article