#babel Babel is a gem to identify in what language a text is written. It is based on the n-gram approach by Cavnar and Trenkle as described in http://www.sfs.uni-tuebingen.de/iscl/Theses/kranig.pdf ##usage require 'rubygems' require 'babel' def guess_language(s) puts "'#{s}' is probably '#{s.language}'" end # load the default profiles Babel.load_profiles # Let's see what Babel thinks about these texts guess_language 'Montags ist es ruhig' guess_language 'le coq est mort' # Replace a profile with my own profile Babel.load_profile('eng', '/path/to/my/english/profile.yml') # Merge profile data Babel.load_profile('eng', '/path/to/my/other/english/profile.yml', :merge => true) # Show Top-3 Languages for a sentence puts "What language could this be written in?".languages[0..2] ##profiles Profiles are collections of n-grams and the number of occurence of each ngram. Babel uses n-grams with length 2-5 (bigram, trigram, tetragram, pentagram). You can create your own profile and decide what n-grams to use and whether you want to limit or not if you want to. These profiles are shipped with the gem: * german (deu) (this profile is built from udhr_deu_1996.txt) * english (eng) * french (fra) * spanish (spa) * italian (ita) Want another profile built in? Send an email to info@simplificator.com and if there are enough requests we add the profile. The profiles that are shipped with babel are based on the texts found at http://www.unicode.org/udhr/index_by_code.html ##generating profiles Profiles can be generated with the data found in http://www.unicode.org/udhr/assemblies/udhr_txt.zip or with any other text. Once a profile is generated, Babel can store it in YAML format and load it again from YAML. there is a rake task which simplifies profile generation: rake babel:build_profile lang=foo file=myfile.txt dir=destination-directory the file which is generated from this command can be loaded by Babel.load_profile 'foo', 'profile_foo.yml' ##Copyright Copyright (c) 2009 Simplificator GmbH. See LICENSE for details.