Long hard look at web filtering

ContentKeeper has developed one of the most sophisticated systems in web filtering, utilising both artificial intelligence and “closed loop collaborative filtering.”

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By  Neil Denslow Published  October 20, 2003

Web-filtering software is an increasingly popular option for companies keen to ensure staff don’t view inappropriate content. ContentKeeper has developed one of the most sophisticated systems in this area, utilising both artificial intelligence and “closed loop collaborative filtering.”

ContentKeeper’s system works on two levels. First, the URL is checked against a central database of registered sites. If the address is not recognised, the system then uses artificial intelligence to assess the site’s content. It looks at eight different factors, including the URL, key words and links from the page, and then decides whether the site is suitable. If the site is unsuitable, then access is denied and the information is confidentially sent to the central database. With 600,000 users worldwide, the database receives 200-1000 updates each hour. “This methodology has been designed to get all the web sites into the database as quickly as possible,” says David Williams, managing director, EMEA, ContentKeeper.

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