among them distributing with the traffic of average rate of increase law calculation flow of passengers capacity; the flow of passengers is brought out in model law calculation with gravity; constructing the rate sharing responsibility for building model calculation according to transportation resistance shifts the flow of passengers; think over time value when the flow of passengers is brought out in the calculation 以胶济铁路提速改造为例,就构造的客运量预测模型作了应用研究。其中以平均增长率法计算客流量的交通分布;以重力模型法计算诱发客流;依据运输阻力构建的分担率模型计算转移客流;在计算诱发客流时考虑了时间价值。
aiming at matching searching of customer demand in product configuration design of case-based reasoning, the conception of the entities, the entity, the attribute, the primary attribute set, the similar element etc . were introduced, and the similarity calculation model based on entity attribute was established; the mapping relationship of customer demands and the product structure cellular feature during the process of product configuration was studied, and the calculation flow of similarity was put forward; the type, range and weighting of attribute were analyzed, the calculation method of property similarity and formula of entity similarity were advanced 摘要针对基于实例推理的产品配置设计中客户需求匹配搜索的问题,引入了实体集、实体、属性、主属性集、相似元等概念,建立了基于实体属性的相似度计算模型;研究了产品配置过程中客户需求与产品结构单元特征之间的映射关系,提出了相似度的计算流程;分析了属性的类型、值域和权重,提出了属性相似度的计算方法和实体相似度的计算公式。