Because of general phenomena of indefinite data or even imperfect existing, information systems that are presented to user are mostly incomplete.
在现实生活中，由于数据的不确定甚至缺损现象的普遍存在，使得数据库使用者面临的信息系统绝大多数都是不完备的。
The evidence reasoning is used in many application fields, such as indefinite reasoning and data fusion. But, the Dempster's rule is unsuitable to solve the combination with high conflict.
证据推理广泛应用于不确定推理和数据融合等许多方面，但D - S合成规则对于高冲突证据的处理不是十分合理的。
The original data comes from the data exchange files in the systems of CAD or CAG and the existing errors as the indefinite information are deleted through the pre processing.
所用源数据来自CAD或CAG系统的数据交换文件，并经预处理后已消除其中包含的各种错误、误差或二意性信息。
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