Tuesday, August 14, 2007

Reverse Turing Test

Hey,

There are several terms used in the aforementioned clip that others, without background knowledge of Professor Alan Turing's experiment, may not be familiar with. The "Imitation Game" refers to the study's initial test. I feel like it should be known that there is a concept known as the Reverse Turing Test. We have all had to interact with this concept every time we register for an online account. Usually, we are presented with a distorted word upon a colored background which prevents automated servers from creating spam accounts. In this way, website designers assume that today's AI technology cannot read and decode a distorted word. The challenge-response process used to determine whether the user is a machine or a human is known widely as CAPTCHA. The acronym was determined in 2000 by Luis Van Ahn and Manuel Blum. According to statistical analysis, with a possible 16 images that can be guessed as the correct image, a machine has a 1 in 65536 chance of guessing correctly. Anyways, thought it would be an interesting story to tell. Enjoy!

-Nishant

-Nishant

2 comments:

aravind said...

Nishant,
That is really interesting. So the concept of those security checks was based on the Turing test?? I have often had problems reading those checks and have to do them multiple times. Do you think AI will soon be able to read and decode these messages?? What would be the next level of upgrade??

Navillus said...

Wow i didn't even know theses types of computers even existed. Even a 1 in 65536 is pretty amazing. Is there a reward for the reverse Turing test?