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SOFTWARE
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WRITINGS
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NEW Evan's Awesome A/B Tools
  • Sample Size Calculator – How many subjects do you need for your experiment?
  • Chi-Squared Test – Are the conversion rates statistically distinguishable?
  • Two-Sample T-Test – Is the difference in means significant?
  • Poisson Means Test – Does the arrival rate differ across two time periods?
Desktop Mac applications:


Wizard
Statistical analyzer

Magic Maps
Mapping and analysis
For OpenCL geeks:
  • ProjCL – Secret map-projection sauce
For Erlang developers:
  • Chicago Boss – An Erlang web framework
  • BossDB – An evented ORM for Erlang
  • ErlyDTL – Django's template language compiled to Erlang bytecode
  • Aleppo – Alternative Erlang Pre-Processor
  • Jerome – Erlang rich-text processing library
For Nginx administrators:
  • mod_circle_gif – Serve round corners with colors specified in the URL. The original Nginx module!
  • mod_zip – Assemble ZIP archives on the fly. Originally developed for box.net in Palo Alto.
  • nginx_upstream_hash – A hashing load balancer.
  • mod_rrd_graph – Link RRDtool's graphing facilities directly into Nginx.
  • nginx.vim – Syntax highlighting for the world's best text editor.
For MediaWiki administrators:
  • Google Maps Extension – Embed and edit Google Maps in your wiki.
Software references for Nginx developers:
  • Emiller's Guide to Nginx Module Development – The guide that started it all... somewhat dated.
  • Emiller's Advanced Topics In Nginx Module Development – The sequel.
Software references for Erlang developers:
  • Chicago Boss: A Rough Introduction – A tutorial for the Erlang web framework.
  • The Joy of Erlang; Or, How To Ride A Toruk – A beginner's guide to Erlang.
  • Write a Template Compiler for Erlang – To my knowledge, no one has actually used this. But there's good stuff in here.

A/B testing articles:
  • NEW Announcing Evan's Awesome A/B Tools – Free, visual statistical calculators.
  • Linear Regression For Fun And Profit – Machine-learning on the cheap.
  • How Not To Run An A/B Test – The hazards of repeated significance testing.
Applied math:
  • NEW Fixing a Hole in the F-Distribution – The story of a subtle bug.
  • How To Read an Unlabeled Sales Chart – Photoshop is no match for math
  • Bayesian Average Ratings – A different perspective on a classic problem.
  • How Not To Sort By Average Rating – We all make mistakes.
  • Rank Hotness With Newton's Law of Cooling – A simple equation for showing what's fresh on a website.
  • Holt-Winters Forecasting Applied to Poisson Processes in Real-Time (pdf) – Monitoring business metrics.
Random musings
  • NEW Predictive Analytics: What Is It Good For? – The shocking truth.
  • The Mathematical Hacker – Why hackers need math, now more than ever.
  • Big Data and the Price-Precision Curve – Significant digits have a significant cost.
  • Don't Kill Math – Comments on Bret Victor's scientific agenda.
  • In Praise of Small Data – Never use Big Data if Small Data will do.
  • The Feature Matrix – How many features should an app have?
Miscellaneous software notes:
  • NEW How To Get Great Ratings For Your Mac App – learn from my mistakes.
  • Why I Develop For The Mac
    • Follow-up: Hackers and <canvas>
  • Winkel Tripel Warping Trouble; or, How I found a bug in the Journal of Surveying Engineering
  • Why I Program In Erlang – and you should too, maybe.
  • Notes on Rendering 2D Graphics on a Mac – Picking the right tool for the job.
  • Premature Optimization and the Rise of Nginx Module Development – Round corners à gogo.
  • Functional Tests As A Tree Of Continuations – DRY applied to functional tests.

© 2011 Evan Miller – emmiller@gmail.com