Today an Op-ed I wrote has been published in the Guardian Media & Tech Network.
An Even Dozen – Denoising Dirty Documents: Part 12
Over the past 11 blogs in this series, I have discussed how to build machine learning models for Kaggle’s Denoising Dirty Documents competition.
Anyone Can Learn To Code an LSTM-RNN in Python (Part 1: RNN)
This is straightforward. Certain types of input create certain types of hidden layers. Certain types of hidden layers create certain types of output layers. It’s kindof a closed system. Memory changes this. Memory means that the hidden layer is a combination of your input data at the current timestep and the hidden layer of the previous timestep.
Emotional contagion in Twitter!
E Ferrara, Z Yang. Measuring Emotional Contagion in Social Media. PLoS ONE, 2015
James Bond movies
James Bond: Do you expect me to talk?Auric Goldfinger: No, Mr. Bond, I expect you to die!
Short Story on AI: A Cognitive Discontinuity.
The idea of writing a collection of short stories has been on my mind for a while. This post is my first ever half-serious attempt at a story, and what better way to kick things off than with a story on AI and what that might look like if you extrapolate our current technology and make the (sensible) assumption that we might achieve much more progress with scaling up supervised learning than any other more exotic approach.
History of Monte Carlo Methods - Part 3
Sebastian Nowozin
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This is the third part of a three part post. The first part covered the early history of Monte Carlo and the rejection sampling method, the second part covered sequential Monte Carlo.
Association rule analysis beyond transaction data
andrew brooks (andrewbrooksct@gmail.com)
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Note : I originally prepared this post as an article for Predictive Analytics Times, geared towards a broad audience with a business/practitioner leaning. I ended up writing this article on knitr instead. In a subsequent post, I will discuss the shiny app I created to interactively explore and visualize association rules.
Golf Balls
Today I’m going to take a whimsical look at golf balls. There is no particular reason for this; It’s just a random excuse to dig out a little math.Golf balls are not smooth spheres; they are covered by a series of dimples. This is for aerodynamic reasons. The dimples encourage the air moving over the ball to transition from laminar boundary layer to turbulent flow a little sooner. A turbulent boundary layer provides a way for more *energetic** fluid to get mixed in closer to the surface of the ball. This encourages the air to stay closer longer and delays the flow separating in the adverse pressure gradient downstream of the widest part of the ball. |
MCMC sampling for dummies
When I give talks about probabilistic programming and Bayesian statistics, I usually gloss over the details of how inference is actually performed, treating it as a black box essentially. The beauty of probabilistic programming is that you actually don’t have to understand how the inference works in order to build models, but it certainly helps.