• Journal of Information Technology Applications and Management
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• 제23권2호
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• pp.97-112
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• 2016

Many studies have pointed out that trust is the most important component of social capital. Although there have been lots of attempts to measure level of trust between members of community, it is hard to find studies which examine trust from the standpoint of structural aspects. Because of the recent rapid growth of SNS and openness trend on members and their friendship information, it became possible to understand the structure of trust relationships among users in SNS. This study aims to facilitate interpersonal trust by comparing the structure of the trust network among social network users. For this purpose, it proposes a method to explore the structure of trust network and strategies to evolve toward more open structure. In experiments to distinguish structure of trust network with three social network communities, it is discovered that ADVOGATO has characteristics of open and collective network together whereas EPINION and FILMTRUST have collective and open characteristics respectively.

• Journal of Information Technology Applications and Management
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• 제18권4호
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• pp.41-53
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• 2011

Trust prediction between users in social network based on the trust propagation assumes properties of transitivity and composability of trust propagation. But it has been hard to find studies which test on how those properties have been operated in real social network. This study aims to validate if the longer the distance of trust paths and the less the numbers of trust paths, the higher prediction error occurs using two real social network data set. As a result, the longer the distance of trust paths, we can find higher prediction error when predicting level of trust between source and target users. But we can not find decreasing trend of prediction error though the possible number of trust paths between source and target users increases.

• International journal of advanced smart convergence
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• 제8권4호
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• pp.169-178
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• 2019

Due to the characteristics of an ad hoc network without a control center, self-organization, and flexible topology, the trust evaluation of the nodes in the network is extremely difficult. Based on the analysis of ad hoc networks and the blockchain technology, a blockchain-based node-level trust evaluation model is proposed. The concepts of the node trust degree of the HASH list on the blockchain and the perfect reward and punishment mechanism are adopted to construct the node trust evaluation model of the ad hoc network. According to the needs of different applications the network security level can be dynamically adjusted through changes in the trust threshold. The simulation experiments demonstrate that ad-hoc on-demand distance vector(AODV) Routing protocol based on this model of multicast-AODV(MAODV) routing protocol shows a significant improvement in security compared with the traditional AODV and on-demand multipath distance vector(AOMDV) routing protocols.

• The Journal of Asian Finance, Economics and Business
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• 제7권12호
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• pp.509-513
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• 2020

Network marketing in Indonesia, especially in a time of crisis, is massively rising and has become a popular opportunity among other industries. Network marketing organizations, consists of partnership and trust, a community of connections and contact between individuals. This article has tried to examine the potential strategy to mitigate low trust in network marketing organizations specifically in the Indonesia market, where no studies on the subject has been done before. In doing this research assignment employed a secondary research methodology by reviewing previous academic literatures, by exploration and evaluation. For the purpose, 6 main articles and 25 relevant supporting articles were selected, there is an interesting and prominent research in an effort to repair trust in the perspective of the organization's efforts to build trust and control trust framework in strategy trust repair. The result of this analysis showed that the application of trust-building activities studies reveals how trust-building behavior is related to controls and how the efforts towards fostering subordinate cooperation are motivated by different types of controls and display of trustworthiness. It can be concluded that by implementing this trust repair model consistently and with a full commitment, it can gradually restore people's trust in the network marketing industry, sustain industry existence and exalted purpose of this industry can be achieved.

• 경영과정보연구
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• 제32권5호
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• pp.193-231
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• 2013

정보통신 기술이 발달하면서 구전은 버즈마케팅, 바이럴 마케팅 등과 같이 다양한 용어로 사용되고 있으며 그 중요성이 강조되고 있다. 그럼에도 불구하고 마케팅에서는 바이럴의 기반이 되는 소셜네트워크에 대한 연구가 부족하다. 소셜네트워크에서는 개인 간에 이루어지는 관계의 패턴이 각 개인의 행위에 중요한 영향을 미친다. 따라서 본 연구에서는 소셜네트워크를 성격에 따라 친교 네트워크와 조언 네트워크로 구분하고, 이러한 네트워크 내에서 구전에 영향을 미칠 수 있는 선행변수로서 정보원의 신뢰를 중심으로 연구를 진행하였다. 본 연구에서는 선행연구들의 문헌 고찰을 통하여 신뢰의 유형을 정서기반신뢰와 인지기반신뢰로 나누었으며, 구전수용과 구전추천으로 구전행동을 검증하였다. 또한 실무적인 시사점을 주기 위해 제품유형의 조절효과를 검토하였다. 연구모형 및 가설 검증을 위해서 SNS를 가장 많이 사용하는 집단인 20대 대학생을 대상로 연구를 진행하였다. 연구결과 네트워크 유형에 따라 신뢰의 유형에 차이가 있는 것으로 나타났다. 정서기반신뢰는 조언네트워크보다 친교네트워크에서 그리고 인지기반신뢰는 친교 네트워크보다 조언 네트워크에서 더 많이 형성되는 것으로 나타났다. 또한 정서기반신뢰와 인지기반신뢰는 구전수용에 정(+)의 영향을 미치는 것으로 나타났다. 예상했던 것과 달리 네트워크 내에 형성된 신뢰는 유형에 관계없이 구전수용에 비슷한 영향을 미쳤다. 또한 구전수용은 구전추천에 정(+)의 영향을 미치는 것으로 나타났다. 조절효과로 정서기반신뢰는 실용재보다 쾌락재의 구전수용에 더 많은 영향을 미치는 것으로 나타났고 특히 친교네트워크 조건에서 정서기반신뢰는 쾌락재의 구전수용에 더 많은 영향을 미치는 것으로 나타났다. 본 연구는 이러한 시도를 통해 구전수용에 영향을 미치는 신뢰를 정서기반과 인지기반으로 신뢰로 유형화하면서 구전연구에서 신뢰연구의 범위를 확대시켰으며 신뢰를 중심으로 네트워크를 유형화하였다. 또한 제품유형에 따라 어떤 네트워크를 통해 구전을 확대해야하는가에 관한 실무적 시사점을 제공하고 있다.

• Journal of Information Technology Applications and Management
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• 제19권2호
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• pp.197-215
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• 2012

SNS has been recognized as a means of expanding social capital by promoting interaction and efficient communication among users. On the other hand, there are serious concerns on negative side of social network which is often called epidemics. Trust plays a critical role in controlling the spread of distorted information and vicious rumor as well as reducing uncertainties and risk from unreliable users in social network. This study focuses on what the antecedents of interpersonal trust are in social network. We performed online survey from 252 Twitter users and tested candidate antecedents which are chosen from previous literature. As a result, propensity to trust of trustor, ability and sincerity of trustee, intimacy between trustor and trustee significantly affected to the interpersonal trust in Twitter.

• Journal of Information Technology Applications and Management
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• 제17권4호
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• pp.39-56
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• 2010

We are sometimes interacting with people who we know nothing and facing with the difficult task of making decisions involving risk in social network. To reduce risk, the topic of building Web of trust is receiving considerable attention in social network. The easiest approach to build Web of trust will be to ask users to represent level of trust explicitly toward another users. However, there exists sparsity issue in Web of trust which is represented explicitly by users as well as it is difficult to urge users to express their level of trustworthiness. We propose a fuzzy-based inference model for Web of trust using user behavior information in social network. According to the experiment result which is applied in Epinions.com, the proposed model show improved connectivity in resulting Web of trust as well as reduced prediction error of trustworthiness compared to existing computational model.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권10호
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• pp.3333-3354
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• 2022

The 5G Core Network (5GC) is an essential part of the mobile communication network, but its security protection strategy based on the boundary construction is difficult to ensure the security inside the network. For example, the Network Function (NF) mutual authentication mechanism that relies on the transport layer security mechanism and OAuth2.0's Client Credentials cannot identify the hijacked NF. To address this problem, this paper proposes a trust model for 5GC based on NF interaction behavior to identify malicious NFs and improve the inherent security of 5GC. First, based on the interaction behavior and context awareness of NF, the trust between NFs is quantified through the frequency ratio of interaction behavior and the success rate of interaction behavior. Second, introduce trust transmit to make NF comprehensively refer to the trust evaluation results of other NFs. Last, classify the possible malicious behavior of NF and define the corresponding punishment mechanism. The experimental results show that the trust value of NFs converges to stable values, and the proposed trust model can effectively evaluate the trustworthiness of NFs and quickly and accurately identify different types of malicious NFs.

• 인터넷정보학회논문지
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• 제15권6호
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• pp.35-45
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• 2014

소셜 네트워크를 통해 생산 유통되는 정보들은 신뢰할 수 없는 불분명한 정보들이 많고 그런 정보들이 무분별하게 확산되기 때문에 사용자들은 정보에 대한 신뢰성 여부를 판단하기가 힘들다. 특히 정보의 신뢰성에 대한 평가가 전적으로 사용자들의 판단에 맡겨지고 있는 상황에서, 온라인 정보의 신뢰도에 대한 체계적인 평가 방안의 마련이 절실하다. 본 논문에서는 소셜네트워크서비스의 신뢰도 평가 지표로서 KTI (Korean Trust Index for SNS)를 설계하여, 서비스 사용자들이 정보의 신뢰성을 판단할 수 있는 기준을 제시하였으며, 이를 통해 사회적 신뢰 수준을 분석할 수 있도록 하였다. SNS의 서비스 특성을 고려하여, 신뢰도에 영향을 주는 요인을 정의하였고 이를 바탕으로 온라인에서 유통되는 정보에 대한 신뢰도를 평가할 수 있는 신뢰모델을 설계하고 신뢰지수 KTI를 제시하였다. 신뢰지수 KTI의 개발은 SNS에 대한 신뢰 수준을 측정하여 이를 정량화함으로써, SNS 연결망을 효율적으로 활용하기 위한 신뢰 확보가 가능할 것으로 기대한다.

• ETRI Journal
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• 제32권2호
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• pp.348-350
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• 2010

This letter presents an enhancement of EigenTrust. Using the beta distribution, local trust values can be more correctly evaluated. Simulation shows that the proposed scheme calculates the local trust more correctly by up to 8%. For personalization, the proposed scheme provides cumulative transitive values from the local trust to the global trust with mathematically guaranteed convergence.