9. The method of claim 7 , wherein identifying the classifier function comprises identifying the classifier function based on application of a function penalty to the web pages in the first subset such that the web pages in the first subset take on a value close to a spam value.
9. The method of claim 7 , wherein identifying the classifier function comprises identifying the classifier function based on application of a function penalty to the web pages in the first subset such that the web pages in the first subset take on a value close to a spam value. 10. The method of claim 9 , wherein identifying the classifier function comprises identifying the classifier function based on application of a function penalty to the web pages in the second subset such that the web pages in the first subset take on a value close to a non-spam content value.