AWS ML Exam preparation FREE Guide: Pretraining Bias on Class, Label Imbalance, SMOTE, DPL & Clarify Explained (Part 7)

Welcome back to our AWS Machine Learning Associate Series, which we started for our non tech blog readers to learn AWS Machine Learning for free to clear AWS ML Associate certification.. In the last post, we saw how raw data must be cleaned and validated before training.

Now, let’s imagine Jake and Ethan have done that work. The ledger is neat, the blanks are filled, and the duplicates are gone. But Ethan knows there’s still a hidden danger: bias in the data before training. In this post, lets see about pretraining Bias concepts like class imbalance, label imbalance, SMOTE, DL in AWS Machine Learning with same Jake and Ethan story for non tech readers to understand. Let's begin!

Chapter 1: Understanding Class Imbalance: The Core ML Bias Problem

Jake slid his old leather ledger across the counter with a grin. “You said you’d do some training to predict my iPhone sales, right? Well, here’s the book. Go ahead, train your magic machine.”

Ethan opened the ledger, flipping through the pages. “Uncle Jake, this isn’t magic. It’s machine learning. But before I can train anything, I need to check if your data is fair.”

Jake raised an eyebrow. “Fair? It’s just sales. What’s unfair about that?”

What is Class Imbalance in ML?

Ethan tapped a page. “Look here. Out of 1,000 entries, 900 are men buying phones and only 100 are women. That’s called class imbalance.”

AWS Certified ML Exam preparation series: Data Cleaning, Imputation, Outlier Detection, and Feature Engineering with AWS Services (Part 6)

Welcome back to our AWS Machine Learning Associate Series, a series we started for our readers to learn about AWS Machine learning free. In the last post, we had seen whether a business problem really needs an ML solution and fundamentals of data . Now, let’s imagine the answer is yes. We’ve collected data — but raw data is messy. Before we can train any model, we need to first clean the data! So, lets’ talk about data cleaning in machine learning, outlier detection, and the AWS services that make this easier in this post. 

Alright, let’s begin..

The Problem: Dirty Data, Data Quality & Data Preprocessing

Jake sat at his counter one evening, flipping through his old leather ledger. To him, it was just a habit — jotting down sales, customer notes, and little reminders. But as Ethan, his nephew and budding data analyst, leaned over, he noticed something troubling.

Some entries were neat and clear:

• “3 iPhone 15 Pro sold.”
• “2 iPhone SE sold.”

Run Google's AI Locally: A Beginner's Guide to Running Gemini AI (Gemma) on Windows free forever!

Stop sending your private data to the cloud: Here’s how to run Google’s most advanced open-source AI, Gemma, directly and privately on your Windows PC.

Introduction: Why Run Gemini Locally?

Artificial Intelligence (AI) is rapidly evolving. Tools like Google's powerful Gemini can write, research, and create. But to use these tools, you typically have to send all your data—your questions, your documents, your private thoughts—over the internet to a huge cloud server.

But here’s the exciting secret: you don’t have to.

Thanks to Gemma, the open-source model built with the same research and technology as Gemini, you can run a powerful Local LLM (Large Language Model) directly on your Windows computer.

How to Prepare for a possible U.S. Recession in 2025: Inflation, Tariffs, and the $38 Trillion Debt Challenge

The U.S. economy in 2025 faces a perfect storm: tariff-driven inflation, slowing growth, and record-breaking national debt. Analysts estimate a 93% probability of recession, based on consumer spending, industrial production, and employment data. Inflation remains stubborn at 3.0%, while tariffs are projected to cost the economy $1.2 trillion this year.

At the same time, the U.S. national debt has crossed $38 trillion, raising concerns about fiscal sustainability. For households and businesses, this means higher borrowing costs, tighter credit, and the possibility of reduced government support during downturns.

A new way to manage your time on YouTube Shorts! - YouTube Introduces Daily Scrolling Limit for Shorts Feed on Mobile

Love YouTube Shorts? So do we! But let’s face it—many of us spend more time scrolling than we intend to.

The infinite scroll design used by platforms like YouTube, Instagram, and TikTok is engineered to keep users engaged. Each swipe delivers a new video, often tailored to your interests, making it difficult to stop. This design taps into the brain’s dopamine reward system, reinforcing the behavior and encouraging prolonged use

Indian Government releases ₹200 RS coin to honor Rani Channamma's victory at Kittur [UPSC Current Affairs - October 2025]

Welcome to UPSC Current Affairs section, where we post the important events helping you in your UPSC preparation Journey. 

File Explorer not previewing pdf files since 25H2 Windows 11 update [Solution]

If you recently updated your computer to Windows 11 version 25H2, you might have noticed something strange: You can no longer see a preview of your PDF files in File Explorer.

Instead of showing a small preview on the right side, it gives you a warning message. Don’t worry—you didn’t do anything wrong. This is a known issue caused by a recent Windows update. Let's see how to fix them.

ChatGPT Atlas : How to Delete Web Browsing History in Chatgpt Atlas!

How to Delete Web Browsing History in ChatGPT Atlas - that's what we are going to see in this post.

Welcome back, readers! In our previous post, we explored the launch of ChatGPT Atlas for Mac users. Today, we're diving into something many of you care deeply about: privacy. If you've landed here searching for how to delete your browsing history in ChatGPT Atlas, or you're simply curious about how to manage your data, this guide is for you.