Users' perception of relevance of spoken documents

We present the results of a study of user's perception of relevance of docu ments. The aim is to study experimentally how users' perception varies depe nding on the form that retrieved documents are presented. Documents retriev ed in response to a query are presented to users in a variety of ways, from full text to a machine spoken query-biased automatically-generated summary , and the difference in users' perception of relevance is studied. The expe rimental results suggest that the effectiveness of advanced multimedia info rmation Retrieval applications may be affected by the row revel of users' p erception of relevance of retrieved documents.