---
title: "Vidya Sagar Mehar (@VidyaSagarMehar) | Hashnode"
description: "Fullstack Web developer. Read the latest articles by Vidya Sagar Mehar on Hashnode."
url: "https://hashnode.com/@VidyaSagarMehar"
---

@VidyaSagarMehar

# Vidya Sagar Mehar

@VidyaSagarMehar · Simdega, Jharkhand · Joined July 2022

Fullstack Web developer

### [Advanced RAG Patterns, Pipelines, and System Design](https://vidyasagar.hashnode.dev/advanced-rag-patterns-pipelines-and-system-design?utm_source=hashnode&utm_medium=feed)

Retrieval-Augmented Generation (RAG) has quickly become a cornerstone in building high-performance AI applications. The basic idea - augmenting an LLM with external knowledge retrieval sounds straightforward: index your data, fetch relevant documents...

4 min read · [vidyasagar.hashnode.dev](https://vidyasagar.hashnode.dev/advanced-rag-patterns-pipelines-and-system-design?utm_source=hashnode&utm_medium=feed)

[Aug 22, 2025](https://hashnode.com/posts/advanced-rag-patterns-pipelines-and-system-design/68a8722b4afb4f676a606959)

### [Intro to RAG (Retrieval Augmented Generation) and Where it fails](https://vidyasagar.hashnode.dev/intro-to-rag-retrieval-augmented-generation-and-where-it-fails?utm_source=hashnode&utm_medium=feed)

Introduction to Retrieval-Augmented Generation (RAG)

6 min read · [vidyasagar.hashnode.dev](https://vidyasagar.hashnode.dev/intro-to-rag-retrieval-augmented-generation-and-where-it-fails?utm_source=hashnode&utm_medium=feed)

[Aug 20, 2025](https://hashnode.com/posts/intro-to-rag-retrieval-augmented-generation-and-where-it-fails/68a5bfe10ee5747f326f4789)

### [Why Computers Chat Like You: The Story of GPT](https://vidyasagar.hashnode.dev/why-computers-chat-like-you-the-story-of-gpt?utm_source=hashnode&utm_medium=feed)

What is GPT? (Explained for a 5-Year-Old!)

3 min read · [vidyasagar.hashnode.dev](https://vidyasagar.hashnode.dev/why-computers-chat-like-you-the-story-of-gpt?utm_source=hashnode&utm_medium=feed)

[Aug 13, 2025](https://hashnode.com/posts/why-computers-chat-like-you-the-story-of-gpt/689c5a462d9055393fd58bfb)

### [From Text to Tokens: How AI Unlocks the Secret Structure of Language](https://vidyasagar.hashnode.dev/from-text-to-tokens-how-ai-unlocks-the-secret-structure-of-language?utm_source=hashnode&utm_medium=feed)

Tokenization Explained Simply: A Deep Dive for Freshers

3 min read · [vidyasagar.hashnode.dev](https://vidyasagar.hashnode.dev/from-text-to-tokens-how-ai-unlocks-the-secret-structure-of-language?utm_source=hashnode&utm_medium=feed)

[Aug 13, 2025](https://hashnode.com/posts/from-text-to-tokens-how-ai-unlocks-the-secret-structure-of-language/689c4f7bd8b2983d6abb41ae)

### [When Words Become Numbers: The Secret Language of Artificial Intelligence](https://vidyasagar.hashnode.dev/when-words-become-numbers-the-secret-language-of-artificial-intelligence?utm_source=hashnode&utm_medium=feed)

Imagine you’re chatting with your mom and she asks, “What does it mean when computers understand words?” Here’s how you could explain vector embeddings—and how cool new models like Transformers make computer brains even smarter! What Are Vector Embed...

3 min read · [vidyasagar.hashnode.dev](https://vidyasagar.hashnode.dev/when-words-become-numbers-the-secret-language-of-artificial-intelligence?utm_source=hashnode&utm_medium=feed)

[Aug 12, 2025](https://hashnode.com/posts/when-words-become-numbers-the-secret-language-of-artificial-intelligence/689b4e538b20ba2cb4f4b6a4)