couchrest_model/examples/word_count/markov
2008-06-01 15:07:56 -07:00

35 lines
805 B
Ruby
Executable file

#!/usr/bin/env ruby
require '../../couchrest'
cr = CouchRest.new("http://localhost:5984")
db = cr.database('word-count-example')
word = ARGV[0]
words = [word]
wprobs = {}
while word
$stdout.print ' ' if words.length > 1
$stdout.print word
$stdout.flush
wprobs[word] ||= db.view('markov/chain-reduce', :startkey => [word,nil], :endkey => [word,{}],:group_level => 2)
# puts
# puts "search #{word} #{wprobs[word]['rows'].length}"
# wprobs[word]['rows'].sort_by{|r|r['value']}.each{|r|puts [r['value'],r['key']].inspect}
rows = wprobs[word]['rows'].select{|r|(r['key'][1]!='')}.sort_by{|r|r['value']}
row = rows[(-1*[rows.length,5].min)..-1].sort_by{rand}[0]
word = row ? row['key'][1] : nil
words << word
end
$stdout.print '.'
$stdout.flush
puts
# `say #{words.join(' ')}`