2. The method of claim 1 , wherein the generating comprises creating feature signal vectors for use in machine learning, wherein the feature signal vectors are based at least in part on the list of Web sites or Web pages visited by the one or more users and on the structured and/or semi-structured parameters extracted from the one or more Web sites or Web pages visited while browsing.
2. The method of claim 1 , wherein the generating comprises creating feature signal vectors for use in machine learning, wherein the feature signal vectors are based at least in part on the list of Web sites or Web pages visited by the one or more users and on the structured and/or semi-structured parameters extracted from the one or more Web sites or Web pages visited while browsing. 4. The method of claim 2 , wherein the feature signal vectors are based at least in part on similarity among semantic types.