DrakeBlog

Qualche ulteriore novità al nostro vecchio b2evolution.

Ho attivato il sistema reCAPTCHA per l'autenticazione "umana" quando si vogliono inserire commenti ai post.

Di cosa si tratta? Certamente tutti conosceranno il sistema CAPTCHA. Per quanto riguarda la nostra implementazione con il re davanti è presto detto:

About 60 million CAPTCHAs are solved by humans around the world every day. ... reCAPTCHA does exactly that by channeling the effort spent solving CAPTCHAs online into "reading" books.

... multiple projects are currently digitizing physical books that were written before the computer age. ... The problem is that OCR is not perfect.

reCAPTCHA improves the process of digitizing books by sending words that cannot be read by computers to the Web in the form of CAPTCHAs for humans to decipher.

But if a computer can't read such a CAPTCHA, how does the system know the correct answer to the puzzle? Here's how: Each new word that cannot be read correctly by OCR is given to a user in conjunction with another word for which the answer is already known. The user is then asked to read both words. If they solve the one for which the answer is known, the system assumes their answer is correct for the new one. The system then gives the new image to a number of other people to determine, with higher confidence, whether the original answer was correct.

In questo modo, nonostante la bassissima percentuale di commenti ai nostri post , cerchiamo di contribuire ad un nobile progetto .