Connor Johnson
493 followers -
"So what." --Miles Davis
"So what." --Miles Davis

493 followers
Posts
Post has attachment
In this post I'll give examples of performing hypothesis testing in R. We’ll begin with testing for normality. Then we’ll look at testing for equality of variance, with and without an assumption of normality. Finally we’ll look at testing for equality of mean, under different assumptions regarding normality and equal variance.
Hypothesis Testing in R
connor-johnson.com
Post has attachment
In this post I’ll discuss how to perform incremental updates to a simple statistical model using PyMC. The short answer is that you have to create a new model each time. In this example, I’ll use a Bernoulli random variable from scipy.stats to generate coin flips, and I will use PyMC to model a prior and likelihood distribution, and produce a posterior distribution as output. #python   #bayesian
Post has attachment
In this post I'll explain how to express beliefs about phenomenon using beta distributions and the Python scipy.stats module.
Post has attachment
I enjoy programming, statistics, reading, and writing. I think my favorite writers are David Sedaris, Jorge Luis Borges, Phillip K Dick, and Fernando Pessoa. I really like magic realism and poetry.
I want to do a series of electronics/math/science projects for kids in my apartment complex (4-6 kids, ages 9-13) for about \$100 every two weeks, for a few weeks. Does anyone have any ideas? Links welcome, thanks!
Post has attachment
In this post I’ll discuss building a Windows executable from a Python script for 32-bit and 64-bit Windows. Producing a 64-bit executable on a 64-bit machine in Windows is easy using PyInstaller, but producing a 32-bit executable on a 64-bit machine takes some tinkering. I ended up setting up a chroot environment on Ubuntu for this task. #python   #ubuntu   #windows
Post has attachment
In this post I’ll discuss building a Windows executable from a Python script for 32-bit and 64-bit Windows. Producing a 64-bit executable on a 64-bit machine in Windows is easy using PyInstaller, but producing a 32-bit executable on a 64-bit machine takes some tinkering. I ended up setting up a chroot environment on Ubuntu for this task. #python   #ubuntu   #windows
Post has attachment
This weekend I put together a Tkinter GUI for labeling images data for machine learning applications. I'm working on digit recognition, and I have a ton of data in the form of PNG images that I need to label. This application allows me to quickly associate labels with images. #python   #tkinter   #machinelearning  ﻿
Post has attachment
This weekend I put together a Tkinter GUI for labeling images data for machine learning applications. I'm working on digit recognition, and I have a ton of data in the form of PNG images that I need to label. This application allows me to quickly associate labels with images. #python   #tkinter   #machinelearning
Post has attachment
I'm going to see how many projects I can put together with one of those little Arduino Sidekick component packs from RadioShack. This weekend it was a tilt switch.
Wiring a Tilt Switch
connor-johnson.com