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Modeling and Dynamic Analysis in Software Systems Based on Complex Networks
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作者 Gao Yang Peng Yong +2 位作者 Xie Feng Dai Zhonghua Xu Guo'ai 《China Communications》 SCIE CSCD 2012年第12期137-143,共7页
A software network model with multiple links is constructed on the basis of a dynamical model of a general complex network with mukiple links. The principle of network division of multiple links is introduced. Followi... A software network model with multiple links is constructed on the basis of a dynamical model of a general complex network with mukiple links. The principle of network division of multiple links is introduced. Following these principles, the software network model is decomposed into three types of subnets and different relationships between classes are revealed. Then, the dynamic analysis of software networks is presented. A sufficient condition for the stability of general complex networks is obtained followed by that of software networks. Finally, the dynamics of an open-source software system is analyzed, and their simulations are provided to demonstrate the effectiveness of the presented model. 展开更多
关键词 software networks multiple links network division subnets dynamic analysis
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Property Preservation of Petri Synthesis Net Based Representation for Embedded Systems 被引量:3
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作者 Chuanliang Xia Chengdong Li 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2021年第4期905-915,共11页
Embedded systems have numerous applications in everyday life.Petri-net-based representation for embedded systems(PRES+)is an important methodology for the modeling and analysis of these embedded systems.For a large co... Embedded systems have numerous applications in everyday life.Petri-net-based representation for embedded systems(PRES+)is an important methodology for the modeling and analysis of these embedded systems.For a large complex embedded system,the state space explosion is a difficult problem for PRES+to model and analyze.The Petri net synthesis method allows one to bypass the state space explosion issue.To solve this problem,as well as model and analyze large complex systems,two synthesis methods for PRES+are presented in this paper.First,the property preservation of the synthesis shared transition set method is investigated.The property preservation of the synthesis shared transition subnet set method is then studied.An abstraction-synthesis-refinement representation method is proposed.Through this representation method,the synthesis shared transition set approach is used to investigate the property preservation of the synthesis shared transition subnet set operation.Under certain conditions,several important properties of these synthetic nets are preserved,namely reachability,timing,functionality,and liveness.An embedded control system model is used as an example to illustrate the effectiveness of these synthesis methods for PRES+. 展开更多
关键词 Modeling Petri nets property preservation SUBNET SYNTHESIS
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基于广告与用户相似度的点击率预估模型 被引量:2
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作者 杨泽平 吴巨聪 +2 位作者 熊文龙 刘诗薇 王恒岩 《电脑知识与技术》 2022年第6期76-78,共3页
点击率预估是广告推荐系统中的一个重要方向,现有的点击率预估模型大多是基于特征feature与CTR之间的关系预测一条广告是否被用户点击,但是仍有许多能提高点击率模型性能的信息被忽略。文章提出了一种基于广告特征与用户特征相似度的模... 点击率预估是广告推荐系统中的一个重要方向,现有的点击率预估模型大多是基于特征feature与CTR之间的关系预测一条广告是否被用户点击,但是仍有许多能提高点击率模型性能的信息被忽略。文章提出了一种基于广告特征与用户特征相似度的模型,该模型在DeepFM点击率预测算法的基础上,增加了一个能够拟合广告特征与用户特征之间关系的模块,即Match Subnet。在训练时,将此模块与DeepFM一起进行训练,但是在预测时,只用DeepFM进行预测,在公共数据集上对比了两种模型,发现添加了拟合用户特征与广告特征关系的模块后,相比原算法有了更好表现。 展开更多
关键词 广告点击率 DeepFM Match Subnet 用户特征 广告特征
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Network Topology Discovery Based on IP Address Inferring
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作者 Wang Jilong Sun Mingmin 《China Communications》 SCIE CSCD 2012年第5期22-31,共10页
In order to discover more detailed topol- ogy inforrmtion of a certain network, a fightweight approach is proposed, in which only one probe source is required. In this approach, a heuristic method in using the" trace... In order to discover more detailed topol- ogy inforrmtion of a certain network, a fightweight approach is proposed, in which only one probe source is required. In this approach, a heuristic method in using the" traceroute" tool is introduced to collect more topology pieces. Based on those traces, subnets (or point-to-point links) in the backbone can be identified. With those identified inforrmtion, a set of roles is developed to resolve router IP aliases. Experiments with both this ap- proach and existing topology discovery methods are carried out on two real networks, i.e., TUNET, the Tsinghua University campus network, and CERNET (AS4538), the third largest ISP network of China. According to the comparison, the approach in this paper can get nmch higher quality inforrm-tion about 1P addresses, links, and touters. In con-clusion, a more complete and accurate topology can be gained with this approach. 展开更多
关键词 topology discovery subnet discovery IP alias
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A Three-dimensional Self-penetrating Co(Ⅱ) Coordination Polymer Containing a 2D → 3D Parallelly Polycatenated Subnet
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作者 肖国斌 方子涵 +1 位作者 姚小强 刘家成 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2018年第8期1287-1292,共6页
Hydrothermal assembly of Co2+ ion, a bis-imidazole ligand BIMB(BIMB = 1,4-bis(imidazol-1-yl)benzene) and a rigid bidentate linker 2,6-naphthalenedicarboxylic acid(H2ndc), yields a novel three-dimensional(3D) ... Hydrothermal assembly of Co2+ ion, a bis-imidazole ligand BIMB(BIMB = 1,4-bis(imidazol-1-yl)benzene) and a rigid bidentate linker 2,6-naphthalenedicarboxylic acid(H2ndc), yields a novel three-dimensional(3D) self-penetrating coordination polymer {[Co(BIMB)(ndc)]·H2O}n(1). Complex 1 exhibits {6~5.8} topology and contains a 2D → 3D parallel polycatenated substructure. In addition, solid-state UV-vis absorption spectra of 1 were also investigated. 展开更多
关键词 2 6-naphthalenedicarboxylic acid 1 4-bis(imidazol-l-yl)benzene topology CRYSTALSTRUCTURE SUBNET
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The Analysis of the Structure and Security of Home Control Subnet
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作者 Chengyi WANG Yun ZHANG 《Wireless Sensor Network》 2009年第1期56-60,共5页
A lot of technologies can be used in home control subnet, but the hardware and software resources available for the home control subnet are limited. There are security problems easily seen. The paper gives the system-... A lot of technologies can be used in home control subnet, but the hardware and software resources available for the home control subnet are limited. There are security problems easily seen. The paper gives the system-atic analysis of the structure and function of home control subnet based on the general model of home net-work. The paper has also analyzed two types of major equipment, namely sub-gateways and terminal equip-ment. The major networking technology used in home control subnet is summarized and concluded. In com-bination with relationship among home control subnet, home network, as well as the outside main network, the paper has systematically studied various safety problems related to home control gateways and the possi-ble solutions to those problems have been made. 展开更多
关键词 HOME NETWORK HOME Control SUBNET NETWORK ARCHITECTURE NETWORK SECURITY
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音响网络HiQnet设备BLU-800及其他相关的设备成员BLU-320、BLU-160、BLU-120
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作者 邹炜胜 《音响技术》 2009年第5期7-8,共2页
详细介绍了BLU-800的结构特点和功能特点,并在此基础上,比较了BLU-300、BLU-160、BLU-120与其的差异。
关键词 容错(fault tolerant_) 子网时标(subnet mask) 通用输入输出接口(GPIP) 串/并行数据接口(S/PDIF)
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音频网络矩阵控制器N8000(二)
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作者 邹炜胜 《音响技术》 2009年第11期4-5,共2页
对于N8000的使用,首先在以太网上通过计算机对N8000控制器进行网络配置,并利用以太网由计算机发送网络信息包给N8000,检测其间连接状况。
关键词 网际协议(IP) 指令提示(Command Prompt) 乒协议(Ping=Packet Internet Groper信息包网际探索协议) 网关(Gateway) 子网标识(Subnet mask)
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