building web page content filter

Posted by radi on Stack Overflow See other posts from Stack Overflow or by radi
Published on 2010-03-18T09:45:17Z Indexed on 2010/03/18 9:51 UTC
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java

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filtering

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web-development

i want to build a filter to block pornography sites so i have some questions :

what tools i need ?

what are the algorithms i have to use ? (speed , efficient )

where i can find an open source filter ?

and i want to use java .

thanks

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