How to reflash nodemcu-firmware to the NodeMCU devkit v2.0 on OS X
Written by Ian Kilgore in math on Sun 26 July 2015. Tags: chaos, geometry, research, experimental data,
In the course of my research I needed to demonstrate that some experimental data is chaotic. This post is an example of how I reconstruct phase space from 1-D experimental data by the method of delays, plot the underlying attractor, and estimate the maximal Lyapunov exponent (characterizing the divergence of the system).
Written by Ian Kilgore in machine learning on Sat 11 July 2015. Tags: python, MATLAB, computer math, OCR, feature selection,
I design features for single-character image recognition and implement a variety of feature selection techniques in order to generate a parsimonious model.
Written by Ian Kilgore in computer vision on Thu 04 June 2015. Tags: computer math, hexagons, capitals,
On Monday evening I had dinner with a friend who showed me the game Capitals and suggested it might be interesting to play it programmatically. tl;dr: I spent the last 18-20 working hours doing that (Github link)
Written by Ian Kilgore in misc on Mon 29 December 2014. Tags: robots, feelings,
I get emotional about a Perl script
Written by Ian Kilgore in math on Wed 05 November 2014. Tags: talks, physics, geometry, math, topology,
I gave a talk at the NCSU Linux Users' Group on some ideas about mechanics, spatial dimensions, data science, and differential geometry. Slides and video after the break.
Written by Ian Kilgore in misc on Thu 11 September 2014. Tags: LaTeX, jokes, math,
(tl;dr: see PDF here). For a top-secret joke project I am learning to program in LaTeX as if it were a general-purpose language. LaTeX is my favourite way to write scientific papers, but no one should use it for programmatic logic. Along the way I have implemented a Sieve ...!-->
The ubiquitous inverse-square laws in physics are a necessary consequence of the three-dimensional nature of space. Barrow shows that Kant was the first to recognize the geometrical connection, although he got it backwards. I explain the geometrical reason for inverse-square laws and follow Kant's argument. Thanks, Kant. Thant.
Written by Ian Kilgore in machine learning on Sat 17 August 2013. Tags: computer math, genetic algorithm, models, machine learning,
I implement a genetic algorithm which attempts to find the lowest-cost path across some weighted map using only local information.