...网 、选择价值（optionvalue，OV）与存在价值 （existence value，EV）之和，其中使用价值包括直接使用价值（direct user value，DUV）和间接使用价值（indirect user value，IUV），即： TEV=DUV+IUV+OV...
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Information reaches the end of its life cycle when it begins to lose direct value to the user community.
当信息开始对用户社区失去直接价值时，信息就到达了其生命周期的结尾。
To compute the trust value of a user, the concept of belief factor is introduced to integrate the direct reputation with the recommend reputation.
论文详细讨论了这些信任因素的获取和计算方法及综合直接信任值与推荐信任值的置信因子的确定方法。
The first it is user value, the user that we know wants to watch the living broadcast of the Olympic Games, we obtain direct seeding authorization, it is to be them to serve.
第一是用户价值，我们知道的用户想要看奥运的直播，我们拿到直播授权，是为他们服务。
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