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Topics /
Math & Algorithms
The most popular blog posts about math & algorithms on Hacker News. 460 posts.
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Modern Image Processing Algorithms Implementation in C
Learn how modern image analysis and processing algorithms works under the hood with their C/C++ implementation on PixLab's APIs & FACEIO, facial recognition framework using the SOD Embedded Computer Vision Library.
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A Beginner’s Guide to Eigenvectors, Covariance, PCA and Entropy
The Eclipse Deeplearning4j Project. Eclipse Deeplearning4j has 5 repositories available. Follow their code on GitHub.
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Beyond automatic differentiation
Posted by Matthew Streeter, Software Engineer, Google Research Derivatives play a central role in optimization and machine learning. By locally app...
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I analyzed the chords to 1300 songs for patterns. Part 3 – Interactive Discovery
Last year, we discussed the first results of a long term effort to study the patterns found in the chords of popular songs. The reception that we got was incredibly positive, and we received a ton of great feedback. The two most common questions we’ve gotten from people have been: Our answer: Hooktheory Trends How...
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Understanding Programs Using Graphs
I want to show you a little of what this sea-of-nodes graph data structure looks like and how it works, and I think it’s worth doing this for this for a couple of reasons.
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Visual explanations of mathematics (2020)
It is thought that Euclid wrote Elements in about 300 BC, but Oliver Byrne turned it into one of the true gems of visualization — and made it about 100 times more readable. By seamlessly combining typeset text (Caslon, if you’re interested) with minimalist geometric drawings in primary col
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Ethiopian Binary Math
Today, a witch doctor practices computer arithmetic. The University of Houston's College of Engineering presents this series about the machines that make our civilization run, and the people whose ingenuity created them. The scene is a remote Ethiopian village in 1940. A Farmer offers his herd of 34 goats for sale…
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B-Trees Require Fewer Comparisons Than Balanced Binary Search Trees
A blog by and for database architects.
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People Keep Inventing Prolly Trees
A novel data structure has been invented four times now, with three different names. We think that's a good sign.
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Time-Series Compression Algorithms
These algorithms aren't magic – but combined they can save over 90% of storage costs and speed up queries. Here’s how 5 common ones work.
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What number is halfway between 1 and 9?
A new information-theoretical model of human sensory perception and memory sheds light on some peculiarities of the nervous system.
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Some fun with π in Julia
A Pi Day tour of π in Julia: how Julia represents π, computing it with inline assembly and Taylor series (Madhava and Machin), and finding guaranteed bounds with interval arithmetic.
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Want to make good business decisions? Learn causality
In some organizations, earnest efforts to be “data-driven” devolve into a culture of false certainty in which the influence of metrics is dictated not by the...
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Making math more Lego-like
A trio of Harvard researchers has developed a new 3-D pictorial language for mathematics with potential as a tool across a wide spectrum, from pure math to physics.
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Is there any point to the 12 times table?
Jon McLoone on why we learn times tables, whether knowing them to 12 is better than to 10, approximation multiplication, & education recommendations
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All Rational Approximations of Pi Are Useless
Investigation to find a better rational approximation for pi. Can we get out more digits than we put in? Chance to win a prize if you can do bette
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“I-Cut-You-Choose” Cake-Cutting Protocol Inspires Solution to Gerrymandering
CMU researchers say getting political parties to equitably draw congressional district boundaries can be as easy as sharing cake.
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Hopfield Networks Is All You Need
Blog post
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The main trick in machine learning
I have been irritated that many recent introductions to machine learning/neural networks/whatever that fail to emphasise the most import trick in machine learning. Many internet resources don’t mention it, and even good textbooks often don’t drill it in to the reader the absolute criticality to success the trick is…
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The Limits of the CAP Theorem
This post explains how CAP-Consistent systems can be highly available, how the CAP theorem applies to CockroachDB, and why consistency is the better choice.
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Why it’s harder to forge a SHA-1 certificate than to find a SHA-1 collision
It’s well known that SHA-1 is no longer considered a secure cryptographic hash function. Researchers now believe that finding a hash collision (two values that result in the same value when SHA-1 is applied) is inevitable and likely to happen.
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Exploring Weight Agnostic Neural Networks
Posted by Adam Gaier, Student Researcher and David Ha, Staff Research Scientist, Google Research, Tokyo When training a neural network to accompl...