Statistics

24 posts
Machine learning demo with your webcam and GIFs

The Teachable Machine from Støj, Use All Five, and Google is a fun experiment that lets you “teach” your computer. Your webcam is used as an input device, and using deeplearn.js, you can make three classifications that change the output. Use different hand gestures, faces, or movements to signal differences, and you can see probabilities change in real-time. It’s hard to believe this stuff runs so smoothly in the browser...

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Report from the NBA Hackathon 2017

Yesterday, I had the honor of being one of the judges at the NBA Hackathon. This is the second edition of the Hackathon, organized by the NBA League Office's analytics department in New York, led by Jason Rosenfeld, pictured here speaking to the crowd: The event was a huge draw - lots of mostly young basketball enthusiasts testing their hands at manipulating and analyzing data to solve interesting problems. I...

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Stack Overflow salary calculator for developers

Stack Overflow used data from their developer survey to build a prediction model for salary, based on role, location, education, experience, and skills. The result was a salary calculator that you can use to gauge how much you should be making. In this salary calculator, we report a predicted salary for the location, education, experience, and other information you enter. We also report a 50% prediction interval. The specific statistical...

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Looking for improbably frequent lottery winners

After hearing the story of reporter Lawrence Mower, who discovered fraudsters after a FOIA request in Florida, a group for the Columbia Journalism Review and PennLive looked to expand on the analysis. Intrigued, we wanted to chart new territory: to find out whether these repeat winning patterns exist across the country. We decided to submit public records requests in every state with a lottery—an adventure in itself given that FOIA...

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Getting into the heads of the chart designer

When I look at this chart (from Business Insider), I try to understand the decisions made by its designer - which things are important to her/him, and which things are less important. The chart shows average salaries in the top 2 percent of income earners. The data are split by gender and by state. First, I notice that the designer chooses to use the map form. This decision suggests that...

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LEGO color scheme classifications

Nathanael Aff poked at LEGO brickset data with some text mining methods in search for recurring color schemes in LEGO sets. This is what he got. Tags: color, Lego

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xkcd: Ensemble model

That xkcd is such a joker. Munroe should start a comic. Tags: forecasting, humor, weather

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Q&A with This is Statistics

I did a quick Q&A with This is Statistics recently. It’s an ongoing effort by the American Statistical Association to tell people what the field is about, which I’m all for.

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Machine learning to find spy planes

Last year, BuzzFeed News went looking for surveillance flight paths from the FBI and Homeland Security. Peter Aldhous describes how they did it. They used machine learning — a random forest algorithm to be more specific — to find the spy planes, which as you might expect tended to circle around more than normal flights. Tags: BuzzFeed, flights, machine learning

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Calculating the opposite of your job

Here’s a fun calculation from The Upshot. The Labor Department keeps detailed and at times delightfully odd records on the skills and tasks required for each job. Some of them are physical: trunk strength, speed of limb movement, the ability to stay upright. Others are more knowledge-based: economics and accounting, physics, programming. Together, they capture the essence of what makes a job distinctive. We’ve used these records to determine what...

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