Data Piques

Mar 22, 2018

Jan 28, 2018

Time Series for scikit-learn People (Part I): Where's the X Matrix?

When I first started to learn about machine learning, specifically supervised learning, I eventually felt comfortable with taking some input $\mathbf{X}$, and determining a function $f(\mathbf{X})$ that best maps $\mathbf{X}$ to some known output value $y$. Separately, I dove a little into time series analysis and thought of this as a completely different paradigm. In time series, we don't think of things in terms of features or inputs; rather, we have the time series $y$, and $y$ alone, and we look at previous values of $y$ to predict future values of $y$.

Jun 20, 2017

Matrix Factorization in PyTorch

Hey, remember when I wrote those ungodly long posts about matrix factorization chock-full of gory math? Good news! You can forget it all. We have now entered the Era of Deep Learning, and automatic differentiation shall be our guiding light.

Mar 20, 2017

Feb 05, 2017

Dec 05, 2016

Nov 07, 2016

Learning to Rank Sketchfab Models with LightFM

In this post we're going to do a bunch of cool things following up on the last post introducing implicit matrix factorization. We're going to explore Learning to Rank, a different method for implicit matrix factorization, and then use the library LightFM to incorporate side information into our recommender. Next, we'll use scikit-optimize to be smarter than grid search for cross validating hyperparameters. Lastly, we'll see that we can move beyond simple user-to-item and item-to-item recommendations now that we have side information embedded in the same space as our users and items. Let's go!

Oct 19, 2016

Oct 09, 2016

Aug 30, 2016

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