Saikat Sarkar Blog

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How to Build a Data Lake on AWS

How to Build a Data Lake on AWS — Step by Step Guide

Learn how to design and build a scalable Data Lake on AWS using S3, Glue, Athena, Redshift, QuickSight, and Lake Formation. Includes architecture, workflow, and best practices.

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Fraud Analytics in Credit Card

Fraud Analytics in Credit Card Transactions with AI and Python

Learn how to detect fraud in credit card transactions using AI and Python. Covers data, features, supervised & unsupervised models, code examples, explainability, and deployment best practices.

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Semantic Search with Python

Semantic Search with Python

Semantic search uses embeddings to capture the meaning of text so you retrieve relevant results.

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Model Performance Metrics

Model Performance Metrics — How to Choose the Right One

A practical guide to model evaluation metrics: classification, regression, ranking and business metrics — when to use each, pros and cons.

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Semantic search with Generative AI (GPT)

Semantic search with Generative AI (GPT)

How to integrate semantic search with Generative AI (GPT) to build chat-with-your-documents systems using Python and LangChain.

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GenAI in FinTech – Smart POS Payment Assistant

GenAI in FinTech – Smart POS Payment Assistant

Use case of Generative AI in FinTech: AI-powered Smart Payment Assistant at POS for digital payments.

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Monte Carlo simulation

What is Monte Carlo Simulation?

Monte Carlo Simulation usesrandom sampling to estimate probabilities of outcomes in uncertain processes. In option pricing, it means simulating future stock prices, calculating option payoffs, and averaging results.

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Sudoku with Python

Solving Sudoku with Python — Backtracking Explaine

A practical walkthrough: implement a Sudoku solver in Python using backtracking (plus simple optimizations). Includes runnable code and example.

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Agentic AI for Trading

Agentic AI for Trading — Prototype & Demo

How to build a safe, human-in-the-loop agentic AI prototype using embeddings, retrieval, LangChain agents and a broker API.

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The Hottest AI Trends

The Hottest AI Trends in 2025

Explore the top AI trends in 2025: Generative AI, Agentic AI, RAG with knowledge graphs, synthetic data, multimodal models, AI governance and more.

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Vision Transformers (ViT)

Vision Transformers (ViT) — Explained + Sample Code

Introduction to Vision Transformers (ViT) with clear explanation and runnable Python code samples (PyTorch).

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Agentic AI

Agentic AI — Real-World Use Cases Across Industries

Explore practical use cases of Agentic AI across business, finance, healthcare, customer support, supply chain, and personal productivity.

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