Nicolas Kruchten

Nicolas Kruchten is a
software engineer at Datacratic
in Montréal, Québec, Canada.

December 2, 2014
Interactive Subreddit Map with t-SNE

Interactive Subreddit Map with t-SNE

For part of my presentation at Montreal Python, I made an interactive map of the various sub-sections of the website Reddit (called subreddits). You can take a look at the interactive version or see a static annotated one above. The interactive one includes basic info on how I made it and full details are in the presentation. I got some nice comments in the /r/DataIsBeautiful subreddit post

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December 1, 2014
Montreal Python 50: Unsupervised ML with scikit-learn


I gave a talk at Montreal Python on Data Science and Unsupervised Machine Learning with scikit-learn. The video is above and I posted all of my presentation materials online.

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November 10, 2014
Arbitraging an RTB Exchange


Last week, Bloomberg came out with an article on RTB arbitrage, which included a couple of sentences that made it sound a lot like it was possible to front-run an RTB auction: “Some buy from an exchange and sell it right back to that very same exchange” and “Some agencies are poorly connected to exchanges and can’t respond to a first auction in time, allowing middlemen to buy and flip within the same market”. This seemed surprising to me at first, given that all auction participants (as far as I know) get the same opportunity to bid on an impression, so how could you make money buying and selling the same impression on the same exchange? Upon further thought, however, here’s a theory about how it might work.

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September 22, 2014
VisMtl: Maps, Tools, Stories

VisMtl: Maps, Tools, Stories

I gave a talk at Visualization Montréal entitled Maps, Tools, Stories. Check out the synced slides and video!

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August 7, 2014
RTB - Big Data, Small Peas


Real-Time Bidding systems buy online ads one at time, at prices on the order of one tenth of a penny per impression. One Friday afternoon, the topic of conversation in a Datacratic chat room turned to what else you can buy for a tenth of a cent. We concluded that a good candidate would be a single green pea.

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© Nicolas Kruchten 2010-2014