1. What is NLP (Natural Language Processing)? NLP is an AI field that helps computers understand, interpret, and generate human language. It blends linguistics, computer science, and machine learning to process text and speech,...

1. Find the second highest salary: SELECT MAX(salary)  FROM employees  WHERE salary < (SELECT MAX(salary) FROM employees); 2. Count employees in each department: SELECT department, COUNT(*)  FROM employees  GROUP BY department; 3. Fetch duplicate...

Prepare smart with these frequently asked questions covering ML, stats, Python, and more! Core Concepts 1. Q: Supervised vs Unsupervised Learning?Supervised: Uses labeled data (e.g., regression, classification)Unsupervised: No labels (e.g., clustering, PCA) 2. Q:...