Introduction (cont.) Available search engines ▫results in response to a user query ▫each presented with a short ‘summary’  2-3 line extracts  document fragments containing query words  fail to reveal their context within the whole document The users ▫scroll down the results ▫click those that seem relevant to their real information need ▫inadequate summaries  missing relevant documents  spending time with irrelevant documents  not feasible to open each link