【摘要】 完整的QoS信息有利于更准确的服务推荐,但是现实中往往很难得到。文章提出了一种基于用户情境的QoS预测方法,对于老用户,根据他们原来的QoS选择,考虑QoS类型区别和时间衰减情况,预测新的QoS取值;对于新用户,按照用户分类信息,根据同类用户的服务选择情况,预测他们的QoS取值。实验证明,该方法有助于提高服务推荐的性能。更多还原

【Abstract】 Complete QoS information is conducive to more accurate service recommendation, but it is often difficult to get in reality. In this paper, a QoS prediction method based on user context is proposed. For the old user, new QoS value is predicted according to their original QoS selection, taking the difference of QoS types and time attenuation into the consideration; for new users, the QoS is predicted according to the user classification information and the service selection of similar users. Experiments show that this method can improve the performance of service recommendation.更多还原