品牌价值内涵和构成的复杂性及近似抽象性，导致评估方法多元化和评估结果差异化。
Brand value connotation and composition of complexity, and approximate abstractness, cause evaluation methods diversity and assessment results differentiation.
文章用拟合方法给出了复杂系统的有效度单边近似下限解，可用来计算卫星系统的有效度单边近似下限，并为评估卫星系统的最短寿命提供数据参考。
This paper gives the one-side approximate lower limit of complex system availability by using fitting method, it can be used in reference to evaluate the shortest life of satellite system.
同时，提出使用属性选择和实例选择方法实现近似挖掘的方案，并对该方案进行挖掘效率和结果模型准确性的分析评估。
At the same time, the solution using attribute selection and instance selection to realize the approximation mining is brought out, and the mining efficiency and result model.
方法：提出一种评价近似周期信号相似度的新方法，从周期相似度和波形相似度两个方面对近似周期信号相似性进行定量评估。
Methods: a new method was presented to evaluate the similarity of approximate periodic signal in terms of period similarity and waveform similarity.
为了解决这一问题，运用一种基于模糊逻辑的近似推理和决策方法，建立了详细的城市中压配电网供电能力优劣性评估模型。
This approach provides a detailed superiority-inferiority model for medium-voltage urban distribution networks by utilizing approximate-reasoning and decision-making methodologies of Fuzzy Logic.
为了解决这一问题，运用一种基于模糊逻辑的近似推理和决策方法，建立了详细的城市中压配电网供电能力优劣性评估模型。
This approach provides a detailed superiority-inferiority model for medium-voltage urban distribution networks by utilizing approximate-reasoning and decision-making methodologies of Fuzzy Logic.
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