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Mindpixel is a World Wide Web based collaborative artificial intelligence project led by Chris McKinstry a one time computer hacker and now an astronomer at the European Southern Observatory in Chile. The project enlists the efforts of thousands of participants over the www and offers them a share in its value if it is successful. Hence its claim to be “The planet's largest artificial intelligence effort" .

The project aims to create a database of millions of validated true / false statements, Participants create one line statements which will be objectively true or false to 20 other anonymous participants. In order to submit their statement they must first check the true/false validity of 20 such statements submitted by others . Participants who reply consistently out of step with the majority have their status downgraded and are eventually excluded.. Likewise participants who make contributions which others cannot agree are objectively true or false have their status downgraded.

A validated true/ false statement is called a mindpixel.

Chris McKinstry believes that the database so constructed could be used in conjunction with a neural net to produce a body of human common sense knowledge which would have market value. Participants are awarded shares in any future value according to the number of mindpixels they have successfully created..

The database and its software is known as GAC ( pronounced Jak) .

The project started in 2000 and has 1.4 million mindixels at Jan 2004

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