You have it off the test you have to take on Digg or Facebook , the one that proves you ’re a human ? You see a knockout - to - read word or string of gibberish , and you typecast in the right characters . Carnegie Mellon investigator settle to replace randomly generated words with actual words from ancient manuscripts , words that machine are having hassle trace . When you or millions of other drug user type in a word , you are beating a machine and help to preserve an irreplaceable schoolbook .
The original test is yell the totally Automated Turing Test To Tell Computers and man aside , or CAPTCHA . This is CMU - originated modification is called reCAPTCHA . Instead of seeing one word , you see two , one that is already verified as right . If you think about it , that ’s the only agency the hallmark could work . Both run-in are further distorted to campaign spammer who may well have better OCR than the libraries .
situation like Facebook and Twitter have already start out using reCAPTCHA , and right now it ’s processing one million word per daytime . That ’s still chump change , though . harmonise to Luis von Ahn , a professor at CMU :
“ There ’s no danger of us course out of Holy Scripture . There ’s still about 100 million playscript to be digitized , which at the current pace will take us about 400 year to dispatch . ”
[ BBC News ]
ComputersHumansturing test
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