Cassie Kozyrkov
Towards Data Science
New York, NY, United States
Contact Cassie
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Past articles by Cassie:
Why is Mean Squared Error (MSE) So Popular?
As a recovering statistician, I’ll be the first to tell you that my people are a painfully literal-minded bunch. Where AI folk favor more sci-fi-flavored names, stats folk love things to do exactly… → Read More
Everything You’ve Ever Wanted to Know About Machine Learning
Putting the fun in fundamentals! A collection of short videos to amuse beginners and experts alike. → Read More
When Your Manager Isn’t Your Best Guide
Should you trust your VP’s feedback or your manager’s? → Read More
How to form realistic expectations about data
There are some big differences between an amateur and a professional analyst. We covered the first 6 of 10 in detail in my previous articles [1] [2] and now we’ll dive into a huge one: realistic… → Read More
Statistics: Are you Bayesian or Frequentist?
What if I told you that I can show you the difference between Bayesian and Frequentist statistics with one single coin toss? Before we go any further, the demonstration works best in video form, so… → Read More
How to spot a data charlatan. Tips for identifying fakers and…
You might have heard of analysts, ML/AI engineers, and statisticians, but have you heard of their overpaid cousin? Meet the data charlatan! Attracted by the lure of lucrative jobs, these hucksters… → Read More
Why are p-values like needles? It’s dangerous to share them!
There’s a war on p-values… and both sides are wrong! → Read More
What makes a data analyst excellent?
Before we dissect the nature of analytical excellence, let’s start with a quick summary of three common misconceptions about analytics from Part 1: While the tools and equations they use are similar… → Read More
What’s the difference between analytics and statistics?
Statistics and analytics are two branches of data science that share many of their early heroes, so the occasional beer is still dedicated to a lively debate about where to draw the boundary between them. Practically, however, modern training programs bearing those names emphasize completely different pursuits. While analysts specialize in exploring what’s in your data, statisticians focus more… → Read More
Data Science Love Letters
If you’re finding it impossible to sift through the 60+ articles I’ve published on Medium, maybe some compilations can help! Here are my 10 best articles for highlighting some of the not-just-AI disciplines and skills that make AI projects tick. Enjoy! → Read More
Never start with a hypothesis
It's no wonder most people get this wrong - statistics classes usually teach you all of the math and none of the philosophy. Take it from someone who took and taught stats classes for over a decade... → Read More
Best Data Science Overviews
Top 10 everyone-friendly articles about data science → Read More
Using AI as a perception-altering drug
There I was in Amsterdam, thinking about ways to alter the mind, augment perception, overcome the limitations of human memory, see the past and present simultaneously… and I know what you’re… → Read More
How to prevent embarrassment in AI
Wise product managers and designers might save your skin by seeing some issues coming a mile off and helping you cook a preventative fix into your production code. Unfortunately, AI systems are… → Read More
How to organize a panel
If you haven’t read “Top 10 panel disasters and how to avoid them” take a look now — I’ll still be here when you get back. Actually you have four jobs that are panel-specific. (You have many more… → Read More
Perception-driven data visualization –
This article was a prank for April Fools’ Day 2019. Now that the festivities are over, scroll to the end of the article for the Real Lessons section for a minute of genuine learning. Evolution… → Read More
Perception-driven data visualization –
Exploring OKCupid data with the most powerful psychological technique for accelerating analytics → Read More
TensorFlow is dead, long live TensorFlow!
If you’re an AI enthusiast and you didn’t see the big news this month, you might have just snoozed through an off-the-charts earthquake. Everything is about to change! Last year I wrote 9 Things You… → Read More
Statistician proves that statistics are boring
I’m about to show you a logical proof that statistics are boring... to help you appreciate the point of all those fancy calculations that statisticians like myself get up to. As an added bonus, this… → Read More
Public speaking masterclass: Everything in moderation
When it comes to panels, everything tends to work out just fine — regardless of prep — if the moderator has the right skills. Hopefully you’ve already looked at “Top 10 panel disasters and how to… → Read More