📰 Dev.to · Chanchal Singh
Articles from Dev.to · Chanchal Singh · 15 articles · Updated every 3 hours · View all reads
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⚡ AI Lessons (10201)
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Dev.to · Chanchal Singh
2mo ago
Day 5 : Is Your Model Actually Good? - Evaluation Metrics
You prepare for an exam. You give a mock test. You get 72 marks. Now the real question is...
Dev.to · Chanchal Singh
2mo ago
Day 4 : How Machines Learn From Their Mistakes
Imagine you are standing on a hill at night 🌙. It’s dark. Fog everywhere. Your goal? Reach the...
Dev.to · Chanchal Singh
2mo ago
Day 3 — Errors & Loss Functions: Measuring How Wrong a Model Is
You’re trying to guess your monthly electricity bill. You think: “Maybe around ₹1,500 this...
Dev.to · Chanchal Singh
2mo ago
Day 2 — Linear Regression: How a Straight Line Learns From Data
Riya is in school. Exams are coming. Her elder sister notices something interesting. Study...
Dev.to · Chanchal Singh
2mo ago
Day 1: Regression — The Art of Prediction
Imagine this 👇 You run a small chai stall ☕. Every day people come and ask: “Bhaiya, aaj...
Dev.to · Chanchal Singh
4mo ago
Statistics Day 9: Bootstrapping Made Simple: The Easiest Way to Understand Resampling
What do you do when your dataset is small, you can’t collect more data, and every conclusion feels...
Dev.to · Chanchal Singh
4mo ago
Statistics Day 8: Understanding A/B Testing and Market Basket Analysis Without the Jargon
Statistics Challenge for Data Scientists Today, we’ll understand two very practical ideas: A/B...
Dev.to · Chanchal Singh
4mo ago
Statistics Day 7 : Hypothesis Testing Made Super Simple
Statistics Challenge for Data Scientists Hypothesis testing sounds scary, but it’s basically a math...
Dev.to · Chanchal Singh
4mo ago
Statistics Day 6: Your First Data Science Superpower: Feature Selection with Correlation & Variance
Feature selection is one of the most important steps before building any machine learning model. And...
Dev.to · Chanchal Singh
4mo ago
Statistics Day5: The Super-Simple Guide to Random Variables and Correlation for Data Science Beginners
If you’re learning statistics for data science, you’ll hear words that sound very big: random...
Dev.to · Chanchal Singh
4mo ago
Statistics Day 4: Z-Score vs Min-Max Normalization — Making Data Fair for ML Models
Welcome back to the Statistics Challenge for Data Scientists! Today, we’re learning something that...
Dev.to · Chanchal Singh
5mo ago
Statistics Day 3: Understanding P-Value — The Heart of Hypothesis Testing
Have you ever tried to prove a point to your friends? Maybe you said — “I think this coin is magic!...
Dev.to · Chanchal Singh
5mo ago
Statistics Day 2: Correlation Isn’t Causation — Here’s Why It Matters!
Welcome to Day 2 of the Statistics Challenge for Data Scientists. In today’s post, we’ll break down...
Dev.to · Chanchal Singh
9mo ago
LangChain vs LangGraph — Understand the Difference Before You Pick One
Many developers jump into LangChain or LangGraph without realizing they serve different...
Dev.to · Chanchal Singh
10mo ago
Getting Started with LangChain: Build Smarter AI Apps with LLMs
Category: LLMs / LangChain / GenAI Published: June-2025 As someone exploring how to turn language...
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