Blog Archives

On the German Tank / Taxicab Problem

November 30, 2016
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On the German Tank / Taxicab Problem

I always get giddy when I can apply real statistics and math to problems in my life. Recently, I had an opportunity to apply the ‘Taxicab Problem’ to something that came up at work. Given that I work for a ridesharing platform and I was quite literally counting “taxis” (or at least cars meant to drive others around), this...

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bayesAB 0.7.0 + A Primer on Priors

October 11, 2016
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bayesAB 0.7.0 + A Primer on Priors

bayesAB 0.7.0 Quick announcement that my package for Bayesian AB Testing, bayesAB, has been updated to 0.7.0 on CRAN. Some improvements on the backend as well a few tweaks for a more fluid UX/API. Some links: bayesAB Github Repo CRAN Page Now, on to the good stuff. Why should we care about priors? Most questions I’ve gotten since I released bayesAB...

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bayesAB: A New R Package for Bayesian AB Testing

September 14, 2016
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This is a teaser blog post to showcase my new R package, bayesAB. Below is the intro of the knitted HTML of the introduction.Rmd vignette of the package. Formatting/colors may be a bit off since the vignette has it’s own styling. Check the full vignette here. Check it out on Github here. Newer version has since been...

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A Graphical Extension of Twitter’s AnomalyDetection Package

January 2, 2016
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A Graphical Extension of Twitter’s AnomalyDetection Package

My New Year’s resolution is to make more than one blog post in 2016. I’m halfway to my minimum goal as of January 2nd so things are looking good. Background Twitter released a new R package earlier this year named AnomalyDetection (link to Github). The Github goes into a bit more detail, but at a high-level it uses a Seasonal...

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On Lagrange Polynomials

September 30, 2015
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On Lagrange Polynomials

Let’s take $n$ distinct points on the real line: Yay. We can now define the Lagrange Polynomials : Why am I making you look at this beauté? Turns out there’s some neat mathematical properties - namely in the subject of polynomial interpolation. That’s a fancy way of saying ‘fit a polynomial through certain points’ but we’ll get to that. Now, it’s...

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Introducing FlyVis

December 15, 2013
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Introducing FlyVis

After a couple all-nighters we’re finally done with our undergraduate statistics thesis. The abstract provides a brief overview of what we were trying to accomplish: We explore the possibility of improving data analysis through the use of interactive visualization. Exploration of data and models is an iterative process. We hypothesize that dynamic, interactive visualizations greatly reduce the cost...

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Let’s Go to Rome

July 25, 2013
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Let’s Go to Rome

Although virtually obsolete, Roman Numerals are subtly embedded into our culture. From the Super Bowl and Olympics to royal titles, Roman Numerals refuse to fully be extinguished from our every day lives. And that’s not without reason. All numbers are beautiful and Roman Numerals are no exception, even if they are written a little differently from their Arabic counterparts. In...

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Stock Market Predictions with Artificial Neural Networks

April 20, 2013
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Stock Market Predictions with Artificial Neural Networks

Many of my research and personal interests lie in the realm of Machine Learning for several reasons. To me, it is the perfect blend of mathematics, statistics, and computer science. Also, it is extremely pervasive in today’s society. Everything from improved web-search to self-driving cars can be attributed to developments in Machine Learning. For one of my computational finance classes,...

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Fractal Fern

April 5, 2013
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Fractal Fern

I’m gonna share a short code snippet that I thought was interesting. This post is inspired by one of my engineering computation classes at Rice. The program initializes a pair of coordinates ‘z’ and iteratively updates z by matrix multiplication based on some random number generation criteria. After each successive coordinate update, the new ‘z’ is plotted.

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Normalized Frequency of Terrorism in the US

March 20, 2013
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Normalized Frequency of Terrorism in the US

I’ve been using the Global Terrorism Database a lot lately so I decided to share an interesting plot I made with the data. The GTD provides over 100,000 observations of terrorist incidents between 1970 and 2011. Of these, there are about 2400 observations in the USA. While this is not a large number, the graph still provides some interesting...

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