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Python

Pure Python Data Science — Building a Social Network from Scratch

Learn how to load, clean, and analyze social network data using only pure Python. Build People You May Know & Pages You Might Like features from scratch.

python data-science pure-python
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Apr 11, 2026 23 min read
SQL

SQL Server Deadlock & Performance Monitoring Made Easy

Introduction In SQL Server, performance issues are very common. Sometimes queries run slow, sometimes users get stuck, and sometimes the system becomes unres...

SQLServer DBA PerformanceTuning
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Mar 19, 2026 52 min read
Machine learning

sklearn.preprocessing Complete Guide: Data Scaling, Encoding & Transformation in Python

...er, MinMaxScaler, LabelEncoder, OneHotEncoder, and 30+ transformers with real-...

sklearn preprocessing scikit-learn preprocessing StandardScaler
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Apr 25, 2026 15 min read
Python

Python List, Tuple, Set & Dictionary: The Ultimate Complete Guide

Master Python's four core data structures — List, Tuple, Set, and Dictionary — with real examples, methods, performance tips, and interview questions.

Python list Python tuple Python set
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Mar 19, 2026 47 min read
Python

The Ultimate Python Basics Guide: From Zero to Confident Developer

Master Python basics from scratch — variables, data types, operators, strings, loops, functions, and more. A complete beginner-to-advanced guide with real-wo...

Python basics Python tutorial Python for beginners
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Mar 19, 2026 41 min read
Machine learning

Categorical Data Handling in Machine Learning (Pandas + Sklearn) – Complete Practical Guide

Learn categorical data encoding end-to-end — Label, Ordinal, One-Hot, Target, Binary, Frequency encoding with Pandas & Sklearn. Beginner to advanced.

categorical encoding machine learning pandas
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Apr 24, 2026 28 min read