Researchers at Yahoo! Research Lab – Barcelona are hosting a collection of labeled web spam hosts, which they call WEBSPAM-UK2006. The dataset consists of around 2725 hosts that have agreements across atleast two labels.

The goal of our dataset activity is to make available reference collections that should be:

• Large: the collections should include many examples of spam and non-spam content.
• Clean: the collections should contain little classification errors.
• Uniform: the collections should represent a uniform random sample over a set of pages or hosts.
• Broad: the collections should include as many different Web spam aspects as possible.
• Open: the collections should be freely available for researchers.

We came across similar problems while creating a a labeled dataset on spam blogs late last year. The creation of this new collection has made important contributions to address some of these issues. A paper describing the collection is also available online[PDF].

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