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Data Science Tutorials

Learn data science and AI with step-by-step tutorials on the DataCamp blog. Master Python, SQL, machine learning, and build your own AI agents.
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Compress Excel File: Fixes for Sluggish or Oversized Spreadsheets

Are you having trouble with slow Excel workbooks or large files that are hard to share? This guide shows you simple and advanced ways to reduce Excel file size, improve performance, and make collaboration easier.
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Jachimma Christian

June 17, 2025

Excel New Line in Cell: Easy Ways to Insert Line Breaks

Discover quick methods to start a new line in an Excel cell using keyboard shortcuts, formulas, and Find & Replace. Learn platform-specific tips for Windows, Mac, and web-based Excel versions.
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Oluseye Jeremiah

June 17, 2025

Hessian Matrix: A Guide to Second-Order Derivatives in Optimization and Beyond

Understand the role of the Hessian matrix in multivariable calculus and optimization. Learn how it’s used to analyze curvature, locate critical points, and guide algorithms in machine learning.
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Vidhi Chugh

June 16, 2025

How to Use Excel CONCAT(): A Quick Guide

Learn how to merge text, numbers, and cell ranges in Excel, reduce manual entry, and keep your data tidy and well-organized.
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Josef Waples

June 16, 2025

Flowise AI: A Guide With Demo Project

Learn how to build an AI agent that answers questions based on a CSV dataset using Flowise, a low-code workflow-based tool.
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François Aubry

June 16, 2025

Kutools for Excel: A Full Introduction of the Excel Add-In

Discover how Kutools for Excel transforms complex Excel tasks into single-click operations with specialized productivity tools. Learn installation, key features, and practical applications to enhance your Excel workflow.
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Vinod Chugani

June 13, 2025

Orthogonal Matrix: An Explanation with Examples and Code

Learn about orthogonal matrices with practical examples and real-world applications in linear algebra and data science.
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Arunn Thevapalan

June 12, 2025

MongoDB Aggregation Pipeline Tutorial in Python with PyMongo

Explore MongoDB aggregation pipelines using PyMongo. Understand data flow, stages like $match, $project, $group, $lookup, and advanced patterns.
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Bex Tuychiev

June 12, 2025