30. The method as described in claim 29 , wherein the first and second sets of items share a given characteristic.
30. The method as described in claim 29 , wherein the first and second sets of items share a given characteristic. 33. The method as described in claim 30 wherein the subsequent user interaction with the information retrieval system is one of: guiding query interpretation, guiding view selection and summarization, intelligent ranges, event detection, concept triggers and interpreting user actions, hierarchy discovery, and adaptive data mining.