考虑个性化语义和一致性的群体决策共识模型

本文针对专家给出语言偏好关系的群体决策问题,考虑不同专家语言术语的个性化语义和个体一致性,提出了一种群体决策共识模型。首先,基于一致性驱动的方法论确定专家语言术语的数值标度,将专家的个体语言偏好关系转化为模糊偏好关系,并通过计算个体模糊偏好关系与群体模糊偏好关系的相似度对群体共识度进行度量。为辅助不满足个体共识水平的专家调整其语言偏好关系,建立了考虑一致性控制的混合0-1线性规划模型来确定其语言偏好关系元素的调整范围。在此基础上,提出了考虑个性化语义和一致性控制的共识达成算法。最后,以在线教育平台选择问题为例说明了所提算法的可行性,并设计仿真实验验证了所提算法的有效性。实验结果表明,本文所提算法可以在保证个体一致性不被破坏的前提下提升群体共识水平。

个性化个体语义驱动的语言分布多属性群决策

实际群决策中,相同语言表达被不同决策者个性化理解称之为个性化个体语义。针对语言分布评价信息下的多属性群决策问题,提出一种基于个性化个体语义的多属性群决策方法。首先,集成专家个性化的属性权重和最佳-最差方法(best-worst method,BWM)模型中的一致性驱动思想构建优化模型,确定每个专家的个性化个体语义标度;然后,为有效集结个体意见形成群体意见,在群体共识和可信度双视角下构建多目标优化模型,用来确定差异化的专家权重。在此基础上,计算群体关于备选方案的综合评价值对方案排序择优;最后,通过一个在线评论多属性群决策的案例说明所提决策方法的有效性和合理性。

一致性和特征向量驱动的个性化语义及其在稻米评价中的应用

在语言决策过程中,不同决策者对同一语言术语的理解不同,因此,考虑决策者的个性化语义对决策结果的合理性具有重要意义.文章在语言分布评估决策矩阵和模糊偏好关系环境下,构建个性化语义的导出模型.从决策矩阵导出的排序向量构建满足积型一致性的成对比较矩阵.然后基于模糊判断矩阵的积型一致性和特征向量的性质,从整合决策矩阵客观信息和偏好关系主观信息的思想出发,提出导出决策者个性化语义函数的两种方法:积型一致性方法和特征向量法.最后将个体评价信息集结得到方案的最终排序.文章最后结合感官评价法,将所提方法运用到对稻米进行评价的实际决策问题中,并和已有的个性化语义导出方法进行比较,说明其合理性与有效性.

Service composition algorithm using semantic constraint to implement user personality

In order to improve the efficiency and quality of service composition,a service composition algorithm based on semantic constraint is proposed.First, a user’s requirements and services from a service repository are compared with the help of a matching algorithm.The algorithm has two levels and filters out the services which do not match the user’s constraint personality requirements.The mechanism can reduce the searching scope at the beginning of the service composition algorithm.Secondly,satisfactions of those selected services for the user’s personality requirements are computed and those services,which have the greatest satisfaction value to make up the service composition,are used.The algorithm is evaluated analytically and experimentally based on the efficiency of service composition and satisfaction for the user’s personality requirements.

Location and Its Semantics in Location-Based Services

Starting with a simple presentation of location determination techniques, physical location and geographic location as two common kinds of location description methods are discussed. The semantic location concept is then introduced and a correction is given, which especially emphasizes that location property is an important part of semantic location. By analyzing the connotation and extension of every geographic location, what should be contained in a location property is determined. Using a hierarchical model, the relations and associations among locations are clearly described. To realize a formalized description of semantic location, an ontology technique that can adequately describe semantic information of location is used. Organized by ontology web language, a location ontology model allows semantic location to be read and processed by computer. The location ontology model realizes the knowledge description of location information and establishes an important foundation to personalized preference services in location based services.

图书馆RSS语义信息推送服务系统的新构想

随着语义技术的日益成熟,推送服务正在把信息获取的主动权还给用户,并在网络信息构建中得到越来越广泛的应用,这也标志着个性化信息聚合时代的来临。作为现有Web的扩展,语义提供了一个通用的框架,允许跨越不同应用程序、企业和团体共享和重用数据。文章结合语义这个概念,构建了一个在语义环境下的RSS信息推送系统模型,展示了其体系架构,并深入探讨了系统实现的流程及运行的可能性。