Changed answer notification in a question and answer system

摘要

Mechanisms are provided, in a question and answer (QA) system, for monitoring changes in answers to previously submitted questions. A question is received for which an answer is to be generated. One answer for the question is generated and the question, answer, and a notification party are registered in a question registration data structure. Another answer to the question is generated, at a later time than when the previous answer was generated. A degree of a change in the two answers to the question is determined. An answer change notification is transmitted to the notification party based on the degree of the change in the two answers to the question. The notification party may be the source of the question or a registered party to which notifications are to be sent.