The purely object-oriented strategy pattern primarily relies on inheritance-based polymorphism to create a family of interchangeable algorithms that are swapped out based on context.

纯粹的面向对象的策略模式主要依赖于基于继承的多态来创建根据环境交换的可互换算法系列。

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According to the basic pattern of sales based on Internet and the attribute of mix marketing strategy dug out, this paper proposes a new algorithm of mining association rules based on constraints.

针对目前我国网络销售的基本模式，在已发现的组合营销策略特点的基础上，提出了一种基于约束的关联规则挖掘新算法。

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Based on the study of mechanism of roof weighting in coal face, a expert system for forecasting pattern, inferring strategy, monitoring method and data processing method are established.

通过对采场来压预测预报机理的深入研究，建立了基于预报模式、推理策略、监测方法及数据处理方法的采场来压预测预报专家系统。

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