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Austin Rochford

Personal blog · austinrochford.com/posts · on HN as MidsizeBlowfishmathdataprogramming

Austin Rochford's personal blog at austinrochford.com covers math, data and programming. Since 2013, 16 different Hacker News readers have linked it 33 times, most often “Solving Battleship with Approximate Bayesian Computation and Thompson Sampling”. It is still writing: the last post was on 2026-09-06, and you can follow it by feed.

Visit the blog
33mentions?
16HN people?
2013–2026first – last linked?
Links on Hacker News per year · peak 9 in 2013

Too few sampled comments (5) to say how often HN recommends it.?

Why HN links it

HN readers link Austin Rochford's posts on math and probability, such as a Fibonacci closed form via generating functions, the measure of the rationals, and probabilistic programming with PyMC.

Summarised by Claude from a sample of 5 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.

{Math, Data, Software}

The author on HN?

MidsizeBlowfish · 224 karma · member since 2012

Mathematician, data scientist, teacher, dog lover www.austinrochford.com

From their public HN profile, which links to this site.

Most-linked posts?

  1. /posts/2013-11-01-generating-functions-and-fibonacci-numbers.html
    3 people · 3 mentions · first linked 2016-04-25
  2. Solving Battleship with Approximate Bayesian Computation and Thompson Sampling
    3 people · 3 mentions · first linked 2021-09-03
  3. Bayesian Survival Analysis in Python with Pymc3
    2 people · 2 mentions · first linked 2015-10-07

What Hacker News says?

  1. roywiggins · 2016-04-26Recommends
    It does- I remember enough from Linear Algebra that vector spaces aren't completely foreign, which helps a lot. I think the generating-function method[1] is a case of pulling out a powertool (generating functions) to prove a simple thing to demonstrate the power of the tool, whereas your explanation takes the direct route and connects more of the threads about why it's true. [1] found an instance here: http://austin…

    Comment linking /posts/2013-11-01-generating-functions-and-fibonacci-numbers.html

    on “An integer formula for Fibonacci numbers”
  2. Submitted The Median-of-Medians Algorithm as a story · 115 points

    HN discussion
  3. Google "fibonacci generating functions", for a more careful derivation. The first hit is: http://austinrochford.com/posts/2013-11-01-generating-functi...

    Comment linking /posts/2013-11-01-generating-functions-and-fibonacci-numbers.html

    on “An integer formula for Fibonacci numbers”
  4. Submitted My Most Interesting Interview Problem as a story · 36 points

    HN discussion
  5. fithisux · 2026-10-17Recommends
    If you want to look further on this fascinating topic [1]: https://austinrochford.com/posts/intro-prob-prog-pymc.html [2]: https://vincentk1991.github.io/Bayesian-regression-tutorial/ I can't recommend enough [3]: https://academic.oup.com/book/54722 the best book on the subject with a Coursera series of top quality

    Comment linking /posts/intro-prob-prog-pymc.html

    on “Monte-Carlo Simulations”
  6. Submitted Generating Functions and Fibonacci Numbers as a story · 24 points

    HN discussion
  7. The rationals have measure zero, so almost all reals are irrational. The Cantor set is an example of an uncountable set which also has measure zero. http://austinrochford.com/posts/2013-12-31-almost-no-rationa...

    Comment linking /posts/2013-12-31-almost-no-rationals.html

    on “Inventor Claims to Have Solved Floating Point Error Problem”
  8. Submitted The Importance of Sequential Testing as a story · 19 points

    HN discussion
  9. Exactly. And fibonacci numbers also have a closed form which can be (in theory) evaluated in O(1): http://austinrochford.com/posts/2013-11-01-generating-functi...

    Comment linking /posts/2013-11-01-generating-functions-and-fibonacci-numbers.html

    on “Tail Recursion Tactics: Fibonacci”
  10. Submitted Polynomial Regression and the Importance of Cross-Validation as a story · 6 points

    HN discussion
  11. Submitted Solving Battleship with Approximate Bayesian Computation and Thompson Sampling as a story · 4 points

    HN discussion
  12. Submitted Playing Battleship with Bayesian Search Theory as a story · 3 points

    HN discussion
  13. Submitted Bayesian Survival Analysis in Python with Pymc3 as a story · 3 points

    HN discussion
  14. Submitted Duplicating Spheres and the Banach-Tarski Paradox as a story · 3 points

    HN discussion
  15. Submitted Euler's Formula in sympy as a story · 3 points

    HN discussion
  16. Submitted Modeling Tide Heights and Kayaker's Heuristics as a story · 2 points

    HN discussion
  17. Submitted The Median of Medians Algorithm as a story · 2 points

    HN discussion
  18. Submitted The Median-of-Medians Algorithm as a story · 2 points

    HN discussion
  19. Submitted Bayesian Survival Analysis in Python with Pymc3 as a story · 2 points

    HN discussion
  20. Submitted Verifying Typeclass Laws in Haskell with QuickCheck as a story · 2 points

    HN discussion
  21. Submitted The Mathematics of Building a Heap in Linear Time as a story · 2 points

    HN discussion
  22. Submitted There Are Almost No Rational Numbers as a story · 2 points

    HN discussion
  23. Submitted Generalized Composition in Haskell as a story · 2 points

    HN discussion
  24. Submitted Prior Distributions for Bayesian Regression Using PyMC as a story · 2 points

    HN discussion
  25. Submitted Playing Battleship with Bayesian Search Theory and Thompson Sampling as a story · 1 points

    HN discussion
  26. Submitted A Fair Price for Darth Vader's Meditation Chamber? A Lego Price Analysis as a story · 1 points

    HN discussion
  27. Submitted Banach Tarski Paradox from Free Groups (2014) as a story · 1 points

    HN discussion
  28. Submitted NBA Foul Calls and Bayesian Item Response Theory as a story · 1 points

    HN discussion
  29. Submitted Reservoir Sampling for Streaming Data as a story · 1 points

    HN discussion
  30. Submitted Matrix Diagonalization and the Fibonacci Numbers as a story · 1 points

    HN discussion

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