Ordinary Least Squares
Most likely, you have previously encountered a trendline on a scatter plot. Through a cloud of dots, that straight line? It was unable to…
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Author: Tarun
Hi, I'm Tarun Kumar — a passionate Software Developer with 4+ years of experience specializing in Python, Django, Django REST Framework, and modern web technologies. I've built scalable applications for both government and private sectors, including ERP systems, HRMS, and digital platforms for Indian Railways.
I thrive at the intersection of backend engineering and user-centric design, integrating tools like MongoDB, PostgreSQL, AWS EC2, and jQuery. I'm also the creator of pythonjournals.com, where I share insights, tutorials, and automation scripts to help developers grow.
When I'm not coding, I mentor interns, explore AI/ML in geospatial analysis, and work on projects that bridge technology with real-world impact.
Simple linear regression
Imagine you’re a restaurant owner. You notice that on warmer days, more people buy ice cream. If you could quantify that relationship, you could…
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Top 100 coding questions in Python
I have shared basic to advanced-level interview questions and answers. BASIC LEVEL (1-20) 1. Reverse a String 2. Check if a string is a…
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What is R Language?
I was wondering, every time I learned a data science course, I saw R. But today I learned about it, and I will give…
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How to Build a Push Notification System Using Django
Imagine your app could send instant updates to users the moment something important happens, whether it’s a new message, an order update, or a…
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Claude Code: Your AI Pair Programmer in the Terminal
If you’ve ever wished you had a brilliant coding teammate available who knows your entire codebase inside and out, Claude Code might be exactly…
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Where We Stand: Anthropic, the Military, and Two Lines We Won’t Cross
We’ve built AI for the U.S. military, and we’re proud of it. But the Pentagon is now asking us to remove safeguards we believe…
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How to Build Your Own AI Agent
In this blog, I’ll provide a short and clear explanation of how you can create your own AI agent.I’ll walk you through a comprehensive…
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What is hallucination?
Hallucination (General): Experiencing things that aren’t really there, seeing, hearing, or feeling something that doesn’t exist in reality. Your brain creates sensory experiences without…
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What is RAG?
So you’ve undoubtedly heard the term “RAG” thrown around in AI chats and are wondering what it means. Don’t worry, it’s not as complicated as it seems, and I’ll explain it in plain English. The Basics RAG stands for Retrieval-Augmented Generation. I know that sounds super technical. But here’s the thing: it’s actually a pretty clever…
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