Damage to parcels reduces customer satisfactionwith delivery services and increases return-logistics costs.This can be prevented by detecting and addressing the damage before the parcels reach the customer.Consequentl...Damage to parcels reduces customer satisfactionwith delivery services and increases return-logistics costs.This can be prevented by detecting and addressing the damage before the parcels reach the customer.Consequently,various studies have been conducted on deep learning techniques related to the detection of parcel damage.This study proposes a deep learning-based damage detectionmethod for various types of parcels.Themethod is intended to be part of a parcel information-recognition systemthat identifies the volume and shipping information of parcels,and determines whether they are damaged;this method is intended for use in the actual parcel-transportation process.For this purpose,1)the study acquired image data in an environment simulating the actual parcel-transportation process,and 2)the training dataset was expanded based on StyleGAN3 with adaptive discriminator augmentation.Additionally,3)a preliminary distinction was made between the appearance of parcels and their damage status to enhance the performance of the parcel damage detection model and analyze the causes of parcel damage.Finally,using the dataset constructed based on the proposed method,a damage type detection model was trained,and its mean average precision was confirmed.This model can improve customer satisfaction and reduce return costs for parcel delivery companies.展开更多
CDN is a kind of effective technology for content processing and distribution and can improve the network performance. However, the development and application of CDN are limited by some reasons, like operating system...CDN is a kind of effective technology for content processing and distribution and can improve the network performance. However, the development and application of CDN are limited by some reasons, like operating system and price of ISP. In addition, ISP is suffering network congestion brought by the sudden traffic migration and infrastructure deployment of CDN without the confusion of the basic information of the network. We should balance or coordinate the relationship between ISP and CDN. And the friendliness building of CDN and ISPs will promote the user experience, effectively guarantee their service quality, improve the network operation, and reduce the content distribution cost. In this paper, we discuss the basic working principle of CDN and ISP, analyze possibility of cooperation between CDN and ISP and conclude the existing methods from a novel angle. Furthermore, some suggestions for further research and solutions in this field are provided.展开更多
部署于云服务传递网络(Cloud Service Delivery Network,CSDN)基础设施的P2P VoD系统,在每个CSDN节点内将同一节目的所有用户构建成P2P覆盖网,但CSDN单节点内大量节目的并发用户稀少.因此,如何在兼顾流量本地化的前提下,解决CSDN架构下P...部署于云服务传递网络(Cloud Service Delivery Network,CSDN)基础设施的P2P VoD系统,在每个CSDN节点内将同一节目的所有用户构建成P2P覆盖网,但CSDN单节点内大量节目的并发用户稀少.因此,如何在兼顾流量本地化的前提下,解决CSDN架构下P2P VoD覆盖网构造中Peer资源稀疏问题是当前面临的一个挑战.为此,提出一种P2P覆盖网的弹性构造方法ECM(Elastic Construction Method).ECM依据资源索引来弹性扩展P2P覆盖网的构造范围,有效解决Peer资源稀疏问题;同时根据CSDN节点间距离来选择扩展路径,实现P2P流量本地化.最后模拟实验结果表明,ECM能有效均衡服务器负载和跨ISP流量.展开更多
传统的CDN(Content Delivery Network)技术和P2P(Peer to Peer)技术无法很好地满足大规模视频服务的需求。为此,研究并分析了网格技术在CDN视频服务网络中的应用,设计出一种具有3层结构的视频服务系统,称为Grid-CDN。归纳总结了Grid-CD...传统的CDN(Content Delivery Network)技术和P2P(Peer to Peer)技术无法很好地满足大规模视频服务的需求。为此,研究并分析了网格技术在CDN视频服务网络中的应用,设计出一种具有3层结构的视频服务系统,称为Grid-CDN。归纳总结了Grid-CDN的主要功能和特点,并详细描述了每个层次的各个模块所实现的功能。设计并开发了视频服务的原型系统,对所开发的系统进行压力测试,Grid-CDN单POP节点可以提供超过2 000个视频流,通过在广域网环境下分布式布置大量POP(Provider of Point)节点,可以很好地满足大规模视频点播服务的需求。测试结果表明,该系统具有很高的实用价值。展开更多
基金supported by a Korea Agency for Infrastructure Technology Advancement(KAIA)grant funded by the Ministry of Land,Infrastructure,and Transport(Grant 1615013176)(https://www.kaia.re.kr/eng/main.do,accessed on 01/06/2024)supported by a Korea Evaluation Institute of Industrial Technology(KEIT)grant funded by the Korean Government(MOTIE)(141518499)(https://www.keit.re.kr/index.es?sid=a2,accessed on 01/06/2024).
文摘Damage to parcels reduces customer satisfactionwith delivery services and increases return-logistics costs.This can be prevented by detecting and addressing the damage before the parcels reach the customer.Consequently,various studies have been conducted on deep learning techniques related to the detection of parcel damage.This study proposes a deep learning-based damage detectionmethod for various types of parcels.Themethod is intended to be part of a parcel information-recognition systemthat identifies the volume and shipping information of parcels,and determines whether they are damaged;this method is intended for use in the actual parcel-transportation process.For this purpose,1)the study acquired image data in an environment simulating the actual parcel-transportation process,and 2)the training dataset was expanded based on StyleGAN3 with adaptive discriminator augmentation.Additionally,3)a preliminary distinction was made between the appearance of parcels and their damage status to enhance the performance of the parcel damage detection model and analyze the causes of parcel damage.Finally,using the dataset constructed based on the proposed method,a damage type detection model was trained,and its mean average precision was confirmed.This model can improve customer satisfaction and reduce return costs for parcel delivery companies.
基金supported by the National Natural Science Foundation of China under Grant No. 61503424the Research Project by The State Ethnic Affairs Commission under Grant No. 14ZYZ017+2 种基金the Jiangsu Future Networks Innovation Institute-Prospective Research Project on Future Networks under Grant No. BY2013095-2-14the Fundamental Research Funds for the Central Universities No. FRF-TP-14-046A2the first-class discipline construction transitional funds of Minzu University of China
文摘CDN is a kind of effective technology for content processing and distribution and can improve the network performance. However, the development and application of CDN are limited by some reasons, like operating system and price of ISP. In addition, ISP is suffering network congestion brought by the sudden traffic migration and infrastructure deployment of CDN without the confusion of the basic information of the network. We should balance or coordinate the relationship between ISP and CDN. And the friendliness building of CDN and ISPs will promote the user experience, effectively guarantee their service quality, improve the network operation, and reduce the content distribution cost. In this paper, we discuss the basic working principle of CDN and ISP, analyze possibility of cooperation between CDN and ISP and conclude the existing methods from a novel angle. Furthermore, some suggestions for further research and solutions in this field are provided.
文摘部署于云服务传递网络(Cloud Service Delivery Network,CSDN)基础设施的P2P VoD系统,在每个CSDN节点内将同一节目的所有用户构建成P2P覆盖网,但CSDN单节点内大量节目的并发用户稀少.因此,如何在兼顾流量本地化的前提下,解决CSDN架构下P2P VoD覆盖网构造中Peer资源稀疏问题是当前面临的一个挑战.为此,提出一种P2P覆盖网的弹性构造方法ECM(Elastic Construction Method).ECM依据资源索引来弹性扩展P2P覆盖网的构造范围,有效解决Peer资源稀疏问题;同时根据CSDN节点间距离来选择扩展路径,实现P2P流量本地化.最后模拟实验结果表明,ECM能有效均衡服务器负载和跨ISP流量.
文摘传统的CDN(Content Delivery Network)技术和P2P(Peer to Peer)技术无法很好地满足大规模视频服务的需求。为此,研究并分析了网格技术在CDN视频服务网络中的应用,设计出一种具有3层结构的视频服务系统,称为Grid-CDN。归纳总结了Grid-CDN的主要功能和特点,并详细描述了每个层次的各个模块所实现的功能。设计并开发了视频服务的原型系统,对所开发的系统进行压力测试,Grid-CDN单POP节点可以提供超过2 000个视频流,通过在广域网环境下分布式布置大量POP(Provider of Point)节点,可以很好地满足大规模视频点播服务的需求。测试结果表明,该系统具有很高的实用价值。
