Mar 23, 2020
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The most used mathematical model for modelling COVID-19

The SIR model is the most basic deterministic model of infectious disease dynamics. Navier-Stokes is to fluid models what SIR is to epidemiology. I suspect a lot of technically minded...

Feb 29, 2020
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My problem with ejucation

I’m not a fan of my son’s kindergarten. I’m not a fan of most kindergartens. To fully understand why, you’ll need to turn back the clock a couple hundred years...

Feb 12, 2020
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Categorification of Markov Decision Processes

In earlier posts I re-discovered the category of stochastic relations. To me this is a very useful category to get comfortable with if you’re a machine learning practitioner with a...

Feb 27, 2019
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Abstract nonsense lurking beneath SQL

This is part of the “machine learning for disillusioned mathematicians” series. Let’s get straight to it. Visualizing tables A cartoon of a table with only one column is a line...

Jan 9, 2019
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Supervised machine learning for pure mathematicians

My own journey from academia to data-science was hard and annoying. The hard part was becoming a decent coder. The annoying part was the math. Not because the math was...

Dec 17, 2018
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My top five Christmas movie recommendations

These are not my favorite Christmas movies. They are my favorite movie recommendations. The distinction manifests in the fact that “It’s a Wonderful Life”, a very good movie, is not...

Jul 26, 2018
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A very bad commencement speech

Congratulations class of 2018! The degrees which you have earned are merely sign posts on the journeys you’ve enabled through years of arduous study. When I graduated, I would never...

Jun 26, 2018
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2001 in 2018

I miss my mommy and daddy. I want to go home. I have lived out of the house for over a decade now, but I miss it. I miss watching...

Apr 17, 2018
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Finance for mathematicians (part II)

This post is something of a sequel to a post from two years ago where I used commutative diagrams to understand finance. A few people wanted me to write a...

Feb 12, 2018
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Probabilistic notation is the worst (Part III)

“We were somewhere around Barstow, on the edge of the desert, when the drugs began to take hold.” ― Hunter S. Thompson, Fear and Loathing in Las Vegas This post...

Jan 27, 2018
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Probabilistic notation is the worst (Part II)

I ended an earlier post by suggesting a new definition of a probability distribution. I glossed over the bulk of the math in that post, so I’ll attempt to remedy...

Jan 21, 2018
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Probabilistic notation is the worst (and how to fix it)

Prologue This will be the first in a 3-part series where I grapple with the foundations of probability theory. Caution: If you find commutative diagrams to be impenetrable, then you...

Dec 10, 2017
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Why is there so much dystopian sci-fi these days?

Teens seem to get all the fun when it comes to new books about a dystopian future society which mirrors our own. The most notable example is “The Hunger Games”,...

Apr 4, 2016
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Finance explained in commutative diagrams

Preface This is actually a repost from my old blog link. I’m reposting it because I hope to write the sequel soon. Introduction The intended audience for this post is...

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