A good computing module can make location-aware system performance more ascendant, and gain location services with great efficiency and low cost.

在感知位置过程中好的计算模型可以给位置感知系统带来优越的性能，得到高效、经济的系统位置服务。

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Building a location-aware service involves many tasks, big and small, and one (relatively small) task may be to convert coordinates from one system to another.

构建位置感知服务涉及多种任务，或大或小，其中一项任务(相对较小)可能要将一种系统坐标转换为另一种系统坐标。

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This ensures that users are fully aware that they are granting system-wide permission to use their location information.

这可确保用户充分认识到，他们在全系统地允许系统使用他们的位置信息。

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But system, which provides knowledge searching service isn't aware of users' context information, such as location, profile, time, and so on.

因此，通过上下文知晓为用户提供合适的知识查找服务是一个重要的研究课题，具有深远的理论意义和实用价值。

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But system, which provides knowledge searching service isn't aware of users' context information, such as location, profile, time, and so on.

因此，通过上下文知晓为用户提供合适的知识查找服务是一个重要的研究课题，具有深远的理论意义和实用价值。

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