Internet of Everything(IoE)has emerged as a promising paradigm for the purpose of connecting and exchanging data among physical objects and humans over the Internet,and it can be widely applied in the fields of indust...Internet of Everything(IoE)has emerged as a promising paradigm for the purpose of connecting and exchanging data among physical objects and humans over the Internet,and it can be widely applied in the fields of industry,transportation,commerce,and education.Recently,the emergence of 6G-enabled cybertwin network architecture provides the technical and theoretical foundation for the realization of IoE paradigm.However,the IoE has three open issues in the 6G-enabled cybertwin architecture,i.e.,data authenticity,data storage and node reliability.To address these issues,we propose a blockchain-based decentralized reputation management system(BC-DRMS)for IoE in 6G-enabled Cybertwin architecture.In the proposed BC-DRMS,the traffic data collected from end nodes is stored on the blockchain and the decentralized file system,i.e.,InterPlanetary File System(IPFS),to resist data tampering,and then the data is further processed by the edge clouds and core clouds to provide services to users.Also,a multi-level reputation evaluation scheme is designed to compute the reputation scores of IoE nodes to prevent malicious node attacks.The experiment results and analysis demonstrate that,compared to the traditional centralized reputation management systems(CRMS),the proposed BC-DRMS cannot only address the issues of data authenticity and storage,but also provides high reliability for IoE in 6G-enabled cybertwin architecture.展开更多
The paper discusses the Internet trade trust problemby using KMRW reputation model in incompleteinformation limited repeated game,concluding thatin certain conditions,both Internet trade participatorswill give up shor...The paper discusses the Internet trade trust problemby using KMRW reputation model in incompleteinformation limited repeated game,concluding thatin certain conditions,both Internet trade participatorswill give up short-time revenue for maximizinglong-term revenue and accordingly employ the cooperationstrategy,and the times of cooperation isvulnerable to trade price and product utility.At last,the paper proposes several policies and suggestionssuch as forming Internet honesty culture,strengtheningInternet brand and figure and protecting Internetwell-known brands.展开更多
The sustainable development of Internet hospitals and e-health platforms relies on the participation of patients and physicians,especially on the provision of health counseling services by physicians.The objective of ...The sustainable development of Internet hospitals and e-health platforms relies on the participation of patients and physicians,especially on the provision of health counseling services by physicians.The objective of our study is to explore the factors motivating Chinese physicians to provide online health counseling services from the perspectives of their online and offline reputation.We collect the data of 141029 physicians from 6173 offline hospitals located in 350 cities in China.Based on the reputation theory and previous studies,we incorporate patients’feedback as physicians’online reputation and incorporate physicians’offline professional status as physicians’offline reputation.Results show that physicians’online reputation significantly and positively influence their online counseling behaviors,whereas physicians’offline reputation significantly and negatively influence their online counseling behaviors.We conclude that physician’s online and offline reputations show a competitive and substitute relationship rather than a complementary relationship in influencing physicians to provide online counseling services in Internet hospitals.One possible explanation for the substitute relationship could be the constraints of limited time and effort of physicians.展开更多
Without cooperative behaviors, our society or organization falls into social dilemma situations where every member selects uncooperative （defective） behaviors, and the situation gets worse and worse. Such a situatio...Without cooperative behaviors, our society or organization falls into social dilemma situations where every member selects uncooperative （defective） behaviors, and the situation gets worse and worse. Such a situation in a society or an organization leads to violation of social or organizational rules, and at the worst case it suffers from serious accidents or scandals. Therefore, it is important for us to make efforts and take measures to elicit cooperative behaviors. It was demonstrated theoretically that altruism strategy and adaptive prediction and ascertainment strategy are in some cases better than rational strategy under the situation of social dilemma. We built up a mathematical model in order to examine how the probability of correctly predicting and ascertaining the behavior （cooperation or defection） of opponents and the mixture of （a） altruism （all cooperation） strategy, （b） individualism （all defection） strategy, and （c） adaptive prediction and ascertainment strategy affected the expected profit. Simulation results showed that the tit-for-tat strategy was better than the rational （individualism） strategy when the probability of correctly predicting and ascertaining defection of the opponent was considerably higher. As an application of the basic study above, it was explored, using a simulation method, how such a system as opening reputation or peer review in public could work satisfactorily to prevent defective behaviors in auction dealing. The result showed that the information on the handle name and the reputation effectively worked to prevent defective behaviors.展开更多
In networked mobile commerce network transactions,trust is the prerequisite and key to a smooth transaction.The measurement of trust between entities involves factors such as transaction amount,transaction time,person...In networked mobile commerce network transactions,trust is the prerequisite and key to a smooth transaction.The measurement of trust between entities involves factors such as transaction amount,transaction time,personal income of consumer entities and their risk attitude towards trust,etc.,so it is difficult to accurately calculate quantitatively.In order to find out the essential characteristics of this trust relationship,based on the research background of mobile commerce in the mobile network environment,a dynamic trust mechanism is proposed through the research of trust in the mobile network environment,trust influencing factors and trust mechanism.The calculation model of mobile interactive services based on mobile service business transactions.The model calculates feedback credibility through feedback deviation and feedback robustness,and combines transaction context factors and trust mapping mechanism to judge the seller’s credibility.This model better reflects the degree of influence of subjective factors such as personal preferences and risk attitudes on trust calculations,And the sensitivity of trust algorithms and transaction attributes has been greatly improved.After a large number of experiments and theoretical analysis,this mechanism provides an effective explanation for solving the problem of network trust computing.and provides valuable new ideas for the study of secure transactions in the mobile Internet environment.展开更多
船联网(internet of vehicle,IoS)是船舶信息交换的载体.基于区块链技术,在IoS上构建一种可信的信息交换机制,并提出相应的航行事件置信度计算与船舶信誉管理方案.该方案借鉴信息过滤的思想得到船舶综合相似度,利用加权熵值反向计算融...船联网(internet of vehicle,IoS)是船舶信息交换的载体.基于区块链技术,在IoS上构建一种可信的信息交换机制,并提出相应的航行事件置信度计算与船舶信誉管理方案.该方案借鉴信息过滤的思想得到船舶综合相似度,利用加权熵值反向计算融合的评级,根据回应船舶评级偏离融合评级的程度更新回应船舶的信誉值;然后采用最小二乘法建立信誉值倒数与评级误差之间的拟合关系,从而得以更新报告船舶的信誉值;进一步设计基于船舶信誉值的DPoS(delegated proof of stake)共识机制,旨在优先选择信誉值较高的船舶作为见证者船舶,以保障系统出块环境的稳定性和高效性.结果显示,在船舶滥用行为占比为40%的情况下,航行事件真实性判定的准确率仍在75%以上.研究表明,所提出的方案不仅有效提高了航行事件真实性判定的准确率,还能识别恶意船舶并限制其滥用行为,从而保证IoS环境的安全和稳定.展开更多
This paper describes a quality-control supply-chain model using the"Internet+"paradigm.The model is based on principal-agent theory,which considers the reputational loss due to inferior products and external...This paper describes a quality-control supply-chain model using the"Internet+"paradigm.The model is based on principal-agent theory,which considers the reputational loss due to inferior products and external responsibility identification.After model analysis and simulation verification,the results show that the optimal quality-control level and market price of agricultural products can be achieved in the agricultural supply chain based on"Internet+"if and only if the information platform’s claim to the agricultural producer is less than the agricultural producer’s claim to the delivery service provider.Also,a rise in consumers’claims or the agricultural producer’s reputational loss due to inferior products will motivate the quality control of an agricultural procedure.Meanwhile,the market price of agricultural products will also increase with enhanced quality control procedures.The quality-control level of a delivery service provider is inversely proportional to the information platform or its own reputational loss.Thus,the key to promoting quality control along the supply chain is to strengthen the responsibility confirmation of an inferior product between the agricultural producer and the delivery service provider.展开更多
为防止城市车联网场景中的恶意伪装节点共享虚假信息,提出一种基于区块链的城市车联网声誉管理(urban internet of vehicles reputation management, UIRM)方案。利用区块链技术对车联网产生的数据进行加密与存储,结合城市道路普遍存在...为防止城市车联网场景中的恶意伪装节点共享虚假信息,提出一种基于区块链的城市车联网声誉管理(urban internet of vehicles reputation management, UIRM)方案。利用区块链技术对车联网产生的数据进行加密与存储,结合城市道路普遍存在的车辆密度较大、数据共享频率较高等环境特征进行设计,保证节点隐私,提高数据共享的效率。实验分析结果表明,在相同参数配置下,相比于现有认可度较高的多权主观逻辑声誉方案,对恶意伪装节点的检出率提升了16.2%,进一步提升了城市车联网内部的安全性与可靠性。展开更多
在车联网中应用联盟链实现道路交通观测信息管理,可以兼顾公有链的去中心化和私有链的高效特性,提升车辆间通信的透明度。然而,现有方案没有充分考虑恶意车辆和恶意路侧单元(RSU,road side unit)节点传播虚假信息的风险,可能导致城市交...在车联网中应用联盟链实现道路交通观测信息管理,可以兼顾公有链的去中心化和私有链的高效特性,提升车辆间通信的透明度。然而,现有方案没有充分考虑恶意车辆和恶意路侧单元(RSU,road side unit)节点传播虚假信息的风险,可能导致城市交通瘫痪和事故。此外,海量车辆数据和重复事件报告传输增加了计算和通信开销,影响了系统的可行性与可扩展性。针对上述问题,提出了针对车联网场景中交互信息的控制传输与高效安全共享方案。首先,设计了基于角度差自变换区域码的信息传输控制策略,该策略通过设定车辆区域码距离的阈值限制信息的转发量,并采用Bloom Filter对信息进行过滤,减少冗余信息的传输。其次,建立了基于诚信分的管理机制以应对恶意节点传播虚假信息对系统的破坏。最后,提出了动态管理多主节点Hotstuff(DMML-Hotstuff,dynamically manage multiple leader Hotstuff)共识算法,有效解决了单主节点性能瓶颈问题,并通过动态节点调整提高了系统吞吐量和拜占庭容忍度。仿真结果表明,所提方案相比现有方案减少了23%和39%的车辆信息传输量,并能实时评估诚信分,快速识别并隔离恶意节点。在共识算法方面,与3种主流拜占庭容错算法相比,吞吐量分别提高了19%、52%和188%。展开更多
基金This work was supported in part by the National Natural Science Foundation of China under Grants 61972205,U1836208,U1836110in part by the National Key R&D Program of China under Grant 2018YFB1003205+2 种基金in part by MOST under Contract 108-2221-E-259-009-MY2 throSugh Pervasive Artificial Intelligence Research(PAIR)Labs(Taiwan)in part by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)fundin part by the Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET)Fund(China).
文摘Internet of Everything(IoE)has emerged as a promising paradigm for the purpose of connecting and exchanging data among physical objects and humans over the Internet,and it can be widely applied in the fields of industry,transportation,commerce,and education.Recently,the emergence of 6G-enabled cybertwin network architecture provides the technical and theoretical foundation for the realization of IoE paradigm.However,the IoE has three open issues in the 6G-enabled cybertwin architecture,i.e.,data authenticity,data storage and node reliability.To address these issues,we propose a blockchain-based decentralized reputation management system(BC-DRMS)for IoE in 6G-enabled Cybertwin architecture.In the proposed BC-DRMS,the traffic data collected from end nodes is stored on the blockchain and the decentralized file system,i.e.,InterPlanetary File System(IPFS),to resist data tampering,and then the data is further processed by the edge clouds and core clouds to provide services to users.Also,a multi-level reputation evaluation scheme is designed to compute the reputation scores of IoE nodes to prevent malicious node attacks.The experiment results and analysis demonstrate that,compared to the traditional centralized reputation management systems(CRMS),the proposed BC-DRMS cannot only address the issues of data authenticity and storage,but also provides high reliability for IoE in 6G-enabled cybertwin architecture.
文摘The paper discusses the Internet trade trust problemby using KMRW reputation model in incompleteinformation limited repeated game,concluding thatin certain conditions,both Internet trade participatorswill give up short-time revenue for maximizinglong-term revenue and accordingly employ the cooperationstrategy,and the times of cooperation isvulnerable to trade price and product utility.At last,the paper proposes several policies and suggestionssuch as forming Internet honesty culture,strengtheningInternet brand and figure and protecting Internetwell-known brands.
基金This study is partially funded by the National Natural Science Foundation of China(Grant No.71904174).
文摘The sustainable development of Internet hospitals and e-health platforms relies on the participation of patients and physicians,especially on the provision of health counseling services by physicians.The objective of our study is to explore the factors motivating Chinese physicians to provide online health counseling services from the perspectives of their online and offline reputation.We collect the data of 141029 physicians from 6173 offline hospitals located in 350 cities in China.Based on the reputation theory and previous studies,we incorporate patients’feedback as physicians’online reputation and incorporate physicians’offline professional status as physicians’offline reputation.Results show that physicians’online reputation significantly and positively influence their online counseling behaviors,whereas physicians’offline reputation significantly and negatively influence their online counseling behaviors.We conclude that physician’s online and offline reputations show a competitive and substitute relationship rather than a complementary relationship in influencing physicians to provide online counseling services in Internet hospitals.One possible explanation for the substitute relationship could be the constraints of limited time and effort of physicians.
文摘Without cooperative behaviors, our society or organization falls into social dilemma situations where every member selects uncooperative （defective） behaviors, and the situation gets worse and worse. Such a situation in a society or an organization leads to violation of social or organizational rules, and at the worst case it suffers from serious accidents or scandals. Therefore, it is important for us to make efforts and take measures to elicit cooperative behaviors. It was demonstrated theoretically that altruism strategy and adaptive prediction and ascertainment strategy are in some cases better than rational strategy under the situation of social dilemma. We built up a mathematical model in order to examine how the probability of correctly predicting and ascertaining the behavior （cooperation or defection） of opponents and the mixture of （a） altruism （all cooperation） strategy, （b） individualism （all defection） strategy, and （c） adaptive prediction and ascertainment strategy affected the expected profit. Simulation results showed that the tit-for-tat strategy was better than the rational （individualism） strategy when the probability of correctly predicting and ascertaining defection of the opponent was considerably higher. As an application of the basic study above, it was explored, using a simulation method, how such a system as opening reputation or peer review in public could work satisfactorily to prevent defective behaviors in auction dealing. The result showed that the information on the handle name and the reputation effectively worked to prevent defective behaviors.
基金The author is very grateful for the financial support of the new retail virtual reality technology(2017TP1026)of the key laboratory in Hunan Province.
文摘In networked mobile commerce network transactions,trust is the prerequisite and key to a smooth transaction.The measurement of trust between entities involves factors such as transaction amount,transaction time,personal income of consumer entities and their risk attitude towards trust,etc.,so it is difficult to accurately calculate quantitatively.In order to find out the essential characteristics of this trust relationship,based on the research background of mobile commerce in the mobile network environment,a dynamic trust mechanism is proposed through the research of trust in the mobile network environment,trust influencing factors and trust mechanism.The calculation model of mobile interactive services based on mobile service business transactions.The model calculates feedback credibility through feedback deviation and feedback robustness,and combines transaction context factors and trust mapping mechanism to judge the seller’s credibility.This model better reflects the degree of influence of subjective factors such as personal preferences and risk attitudes on trust calculations,And the sensitivity of trust algorithms and transaction attributes has been greatly improved.After a large number of experiments and theoretical analysis,this mechanism provides an effective explanation for solving the problem of network trust computing.and provides valuable new ideas for the study of secure transactions in the mobile Internet environment.
文摘船联网(internet of vehicle,IoS)是船舶信息交换的载体.基于区块链技术,在IoS上构建一种可信的信息交换机制,并提出相应的航行事件置信度计算与船舶信誉管理方案.该方案借鉴信息过滤的思想得到船舶综合相似度,利用加权熵值反向计算融合的评级,根据回应船舶评级偏离融合评级的程度更新回应船舶的信誉值;然后采用最小二乘法建立信誉值倒数与评级误差之间的拟合关系,从而得以更新报告船舶的信誉值;进一步设计基于船舶信誉值的DPoS(delegated proof of stake)共识机制,旨在优先选择信誉值较高的船舶作为见证者船舶,以保障系统出块环境的稳定性和高效性.结果显示,在船舶滥用行为占比为40%的情况下,航行事件真实性判定的准确率仍在75%以上.研究表明,所提出的方案不仅有效提高了航行事件真实性判定的准确率,还能识别恶意船舶并限制其滥用行为,从而保证IoS环境的安全和稳定.
基金supported by the Beijing social science fund project(No.16GLC061)Beijing new rural construction research project(No.KF2016052).
文摘This paper describes a quality-control supply-chain model using the"Internet+"paradigm.The model is based on principal-agent theory,which considers the reputational loss due to inferior products and external responsibility identification.After model analysis and simulation verification,the results show that the optimal quality-control level and market price of agricultural products can be achieved in the agricultural supply chain based on"Internet+"if and only if the information platform’s claim to the agricultural producer is less than the agricultural producer’s claim to the delivery service provider.Also,a rise in consumers’claims or the agricultural producer’s reputational loss due to inferior products will motivate the quality control of an agricultural procedure.Meanwhile,the market price of agricultural products will also increase with enhanced quality control procedures.The quality-control level of a delivery service provider is inversely proportional to the information platform or its own reputational loss.Thus,the key to promoting quality control along the supply chain is to strengthen the responsibility confirmation of an inferior product between the agricultural producer and the delivery service provider.
文摘为防止城市车联网场景中的恶意伪装节点共享虚假信息,提出一种基于区块链的城市车联网声誉管理(urban internet of vehicles reputation management, UIRM)方案。利用区块链技术对车联网产生的数据进行加密与存储,结合城市道路普遍存在的车辆密度较大、数据共享频率较高等环境特征进行设计,保证节点隐私,提高数据共享的效率。实验分析结果表明,在相同参数配置下,相比于现有认可度较高的多权主观逻辑声誉方案,对恶意伪装节点的检出率提升了16.2%,进一步提升了城市车联网内部的安全性与可靠性。
基金the National Natural Science Foundation for Distinguished Young Scholars of China under Grant No.60625203 (国家自然科学基金杰出青年基金)the National Basic Research Program of China under Grant Nos.2005CB321800 2005CB321804 (国家重点基础研究发展计划(973))
