在一个由多个系统组成的系统中，通常会有一个逻辑元素(子系统)和物理元素(在RUP SE中被表示为位置或设计节点)之间多对多的映射。
In a system of systems, typically there is a many-to-many mapping between logical elements (subsystems) and physical elements (represented in RUP se as localities or design nodes).
基于多主题追踪的推荐算法采用多个用户模型表示用户对不同主题的兴趣，并动态更新用户模型以动态反映用户的兴趣变化。
The proposed algorithm used multiple user profiles to represent user's interests in different topics, and dynamically updated user's profile to reflect the changing of user's interests.
应用推荐