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基于节点动态连接度的网络社团划分算法 被引量:6
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作者 贾珺 胡晓峰 贺筱媛 《复杂系统与复杂性科学》 EI CSCD 北大核心 2016年第4期56-61,共6页
首先定义了节点动态连接度这一概念,然后介绍了基于节点动态连接度的网络社团划分算法,之后再对其中相关参数的取值范围和社团划分结果之间的关系进行了分析,并以Zachary网络为例验证了分析结论。在此基础上,以dolphins、polbooks和foot... 首先定义了节点动态连接度这一概念,然后介绍了基于节点动态连接度的网络社团划分算法,之后再对其中相关参数的取值范围和社团划分结果之间的关系进行了分析,并以Zachary网络为例验证了分析结论。在此基础上,以dolphins、polbooks和football 3个实际网络为对象,进行了社团划分实验,证明了本算法可通过动态调整参数实现对不同网络的社团划分。最后将实验结果与其他几种常见的社团划分算法结果进行了比较,证明了算法的优势,并对算法中需要注意的一些问题进行了说明。 展开更多
关键词 节点动态连接度 社团结构 社团划分
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城市路网动态连接度研究 被引量:1
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作者 兰小毅 苏兵 +2 位作者 程新峰 沈艳梅 葛长飞 《西安工业大学学报》 CAS 2013年第9期747-750,共4页
路网连接度是评价城市路网布局合理性的重要指标.以往研究从静态角度将其定义为路网中路段数与节点数之比.现实生活中,由于路网的不确定性,某些路段在某一时点或一段时间内可能发生堵塞,造成路网上的路段数和节点数发生变化.本文首先从... 路网连接度是评价城市路网布局合理性的重要指标.以往研究从静态角度将其定义为路网中路段数与节点数之比.现实生活中,由于路网的不确定性,某些路段在某一时点或一段时间内可能发生堵塞,造成路网上的路段数和节点数发生变化.本文首先从每条路段只有堵塞和不堵塞两种情况,提出每条路段堵塞为二项分布的动态连接度,其次从总路段数发生变化的角度,提出路网中不发生堵塞总路段数为随机分布的动态连接度,并分别给出了指标的定义,性质和计算方法;最后结合某市路网进行了实例分析. 展开更多
关键词 城市路网 路网连接 路段堵塞 动态连接度
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方格路网的动态连接度指标分析与计算 被引量:1
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作者 葛长飞 《牡丹江大学学报》 2012年第2期135-137,共3页
突发性堵塞对方格路网的影响较大,评价方格路网点和边之间关系的连接度指标就会失效。本文基于方格路网节点堵塞动态连接度指标,为交通规划部门和交通分流提供决策建议。对堵塞点发生在方格网的顶点、边缘和内部动态连接度进行分析,分... 突发性堵塞对方格路网的影响较大,评价方格路网点和边之间关系的连接度指标就会失效。本文基于方格路网节点堵塞动态连接度指标,为交通规划部门和交通分流提供决策建议。对堵塞点发生在方格网的顶点、边缘和内部动态连接度进行分析,分析相关的性质并给出相对应的动态连接度的算法,最后以盐城市实际方格路网为例,对指标和性质进行验证。 展开更多
关键词 方格路网 动态连接度 堵塞
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Dynamic analysis of elastic screen surface with multiple attached substructures and experimental validation 被引量:2
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作者 王宏 刘初升 +2 位作者 彭利平 蒋小伟 冀连权 《Journal of Central South University》 SCIE EI CAS 2012年第10期2910-2917,共8页
A feasible method to improve the reliability and processing efficiency of large vibrating screen via the application of an elastic screen surface with multiple attached substructures (ESSMAS) was proposed. In the ES... A feasible method to improve the reliability and processing efficiency of large vibrating screen via the application of an elastic screen surface with multiple attached substructures (ESSMAS) was proposed. In the ESSMAS, every screen rod, with ends embedded into elastomer, is coupled to the main screen structure in a relatively flexible manner. The theoretical analysis was conducted, which consists of establishing dynamic model promoted from the fuzzy structure theory as well as calculating for the equivalent stiffness of each attached structure. According to the numerical simulation using the NEWMARK-fl integration method, this assembling pattern significantly leads to the screen surface/rod having larger vibration intensity than that of the corresponding position on screen structure, which specifically, with an averaged acceleration amplitude increasing ratio of 11.37% in theoretical analysis and 20.27% in experimental test. The experimental results, within a tolerant error, also confirm the established model and demonstrate the feasibility of ESSMAS. 展开更多
关键词 mineral processing vibrating screen elastic screen surface attached substructures dynamic analysis reliability processing efficiency
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Modeling Dynamic Evolution of Online Friendship Network
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作者 吴联仁 闫强 《Communications in Theoretical Physics》 SCIE CAS CSCD 2012年第10期599-603,共5页
In this paper,we study the dynamic evolution of friendship network in SNS(Social Networking Site).Our analysis suggests that an individual joining a community depends not only on the number of friends he or she has wi... In this paper,we study the dynamic evolution of friendship network in SNS(Social Networking Site).Our analysis suggests that an individual joining a community depends not only on the number of friends he or she has within the community,but also on the friendship network generated by those friends.In addition,we propose a model which is based on two processes:first,connecting nearest neighbors;second,strength driven attachment mechanism.The model reflects two facts:first,in the social network it is a universal phenomenon that two nodes are connected when they have at least one common neighbor;second,new nodes connect more likely to nodes which have larger weights and interactions,a phenomenon called strength driven attachment(also called weight driven attachment).From the simulation results,we find that degree distribution P(k),strength distribution P(s),and degree-strength correlation are all consistent with empirical data. 展开更多
关键词 friendship network common neighbor CNN strength driven
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