This is an overview over the inner workings of Detexify. Extended knowlege in pattern recognition or machine learning is not necessary as I will explain some basics but understanding of linear algebra will definitely help. I have to note that I am not an expert, either. I more or less stumbled into this because of this project. Experts in this field may safely skip the first section.
Daniel Kirsch kirel
kirel
/ databa.be.rb
Created
May 23, 2009 14:56
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| require 'mechanize' | |
| def r; (0...10).map { (c = [('0'..'9'),('A'..'Z'),('a'..'z')].map {|r| r.to_a}.flatten)[rand(c.size)] }.join end | |
| cnt = 0 | |
| doom = lambda do | |
| Thread.new do | |
| WWW::Mechanize.new.get('http://databa.be/') do |p| | |
| p.form_with(:action => '/?login_attempt=1') do |f| | |
| f.email = "#{r}@#{r}.com" | |
| f.pass = r | |
| end.click_button rescue "Fuck you!" |
kirel
/ symlist.rb
Created
June 24, 2009 10:28
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| require 'open-uri' | |
| require 'cgi' | |
| require 'restclient' | |
| require 'rmagick' | |
| MATHTRAN = "http://www.mathtran.org/cgi-bin/mathtran" | |
| def get tex | |
| RestClient.get("#{MATHTRAN}?tex=#{CGI::escape(tex)}") | |
| end |
kirel
/ .bashrc
Created
July 8, 2009 21:26
— forked from defunkt/.bashrc
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| # $ tweet Hi mom! | |
| # | |
| # Put this in ~/.bashrc or wherever. | |
| # If it doesn't work, make sure your ~/.netrc is right | |
| # | |
| # (Thanks to @anildigital and @grundprinzip for curl-fu) | |
| function tweet { | |
| curl -n -d status="$*" https://twitter.com/statuses/update.xml --insecure &> /dev/null | |
| echo "tweet'd" |
kirel
/ gist:165919
Created
August 11, 2009 15:59
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| CGSize imageSize = image.size; | |
| CGSize targetSize = CGSizeMake(36.0, 36.0); | |
| CGFloat scaleFactor = 1.0; | |
| CGFloat scaledWidth = imageSize.width; | |
| CGFloat scaledHeight = imageSize.height; | |
| CGPoint scaledOrigin = CGPointMake(0.0,0.0); | |
| CGFloat widthFactor = targetSize.width / imageSize.width; | |
| CGFloat heightFactor = targetSize.height / imageSize.height; | |
| // only scale if larger than target | |
| if ((image.size.width > targetSize.width) || (image.size.height > targetSize.height)) { |
kirel
/ RestfulAuthenticationResetPassword.rb
Created
September 2, 2009 13:53
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| module Zweitag | |
| # following migration needed | |
| # | |
| # class AddResetCodeToUser < ActiveRecord::Migration | |
| # def self.up | |
| # add_column :users, :reset_code, :string | |
| # end | |
| # | |
| # def self.down | |
| # remove_column :users, :reset_code |
kirel
/ slider.html
Created
September 2, 2009 20:16
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| <html> | |
| <head> | |
| <title>Page Title</title> | |
| <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3/jquery.min.js"></script> | |
| <style type="text/css" media="screen"> | |
| #inner, .scrolling { | |
| margin:0; | |
| padding:0; | |
| } | |
| #outer { |
kirel
/ snippet.rb
Created
September 10, 2009 13:42
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| class Array | |
| def delete_at_random l | |
| res = [] | |
| l.times { res << delete_at(rand(size)) } | |
| res | |
| end | |
| end | |
| if __FILE__ == $0 | |
| require "test/unit" |
kirel
/ snippet.rb
Created
September 10, 2009 14:03
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| class Array | |
| def random_slice lenght | |
| values_at(*(1..lenght).inject([]){|a,_|a.include?(r=rand(size))?redo:a<<r}) | |
| end | |
| end |
kirel
/ snippet.rb
Created
September 10, 2009 14:03
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| class Array | |
| def random_slice length | |
| values_at(*(1..length).inject([]){|a,_|a.include?(r=rand(size))?redo:a<<r}) | |
| end | |
| end |