A METHOD AND SYSTEM FOR INFORMATION RETRIEVAL BASED ON PARTS OF SPEECH CONDITIONS

An information retrieval navigation method permitting either the operator or the customer not equipped with a sufficient knowledge of a given product to obtain a sufficient retrieval result is disclosed, in which at least a retrieval navigation item is generated based on the information on a plurality of cases about the product, the user is caused to select at least selected one of the retrieval navigation items, and a retrieval navigation message constituting a natural language message is generated and output from the selected retrieval navigation item. As a result, even the operator or the customer not fully equipped with the knowledge of the product can obtain a sufficient retrieval result.