• KSII Transactions on Internet and Information Systems (TIIS)
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• v.11 no.3
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• pp.1570-1594
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• 2017

Social network services have recently changed from environments for simply building connections among users to open platforms for generating and sharing various forms of information. Existing user reputation computation methods are inadequate for determining the trust in users on social media where explicit ratings are rare, because they determine the trust in users based on user profile, explicit relations, and explicit ratings. To solve this limitation of previous research, we propose a user reputation computation method suitable for the social media environment by incorporating implicit as well as explicit ratings. Reliable user reputation is estimated by identifying malicious information raters, modifying explicit ratings, and applying them to user reputation scores. The proposed method incorporates implicit ratings into user reputation estimation by differentiating positive and negative implicit ratings. Moreover, the method generates user reputation scores for individual categories to determine a given user's expertise, and incorporates the number of users who participated in rating to determine a given user's influence. This allows reputation scores to be generated also for users who have received no explicit ratings, and, thereby, is more suitable for social media. In addition, based on the user reputation scores, malicious information providers can be identified.

• The Journal of the Convergence on Culture Technology
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• v.5 no.3
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• pp.93-100
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• 2019

This study has implications for expanding and applying the concept of reputation to a national level. Especially, the purpose of this study is to measure Korean country reputation, and we find out how foreigners perceive Korean country reputation using co-orientation model. According to the study, respondents were positively aware of the 'cultural entertainment' and 'openness of other cultural' factors and 'global citizenship' factors among the components of the county reputation for Korea. In addition, although the differences in national reputation among respondents' gender were not statistically significant, they showed statistical differences in some national reputation components by age group. Finally, the respondents looked at the statistical difference between Korean evaluation and Korean perception of the foreigners's view for Korean country reputation.

• Journal of the Korea Society of Computer and Information
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• v.18 no.9
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• pp.139-152
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• 2013

Although a series of studies shows the fact that a company's reputation could affect its sales rate and stock price, due to the increased use of SNS, the research related to the online measurement method for the corporate reputation has been relatively insufficient. This study explores a design for a method to quantify the corporate reputation value by reconstructing the discussions in literature review. Concretely, this study divides the corporate reputation value into the corporate identity information and the corporate awareness information, which includes the following five sub-categories: (1) the quality of product and service; (2) the employment environment; (3) the corporate vision; (4) the social responsibility; and (5) the business achievement. Additionally, for the corporate identity assessment, this study considers the following six factors: (1) Agreeableness (Goodness), (2)Capability (Ability), (3)Enterprise (Rise), (4)Chic (Class), (5) Ruthlessness (Authority), and (6)Informality. Based on these categories and factors, this study develops a technique quantifying the corporate reputation value by selecting 'word items' for the reputation search, and after conducting a frequency analysis in a survey. Also, to verify the result, this study exemplifies the reputation of three SI companies in Korea which could be utilized by using the commercialized reputation service. This study firstly attempts the corporate reputation measurement by classifying the identity and the awareness (corporate image and communication) upon a company in detail and enables its real applicabilities by proposing a formula to measure the reputation scores which can be utilized by verified word items from a frequency analysis.

• Journal of Korea Multimedia Society
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• v.21 no.12
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• pp.1448-1458
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• 2018

Vehicular Ad-Hoc Networks (VANETs) have become one of the active areas of research, standardization, and development because they have tremendous potentials to improve vehicle and road safety, traffic efficiency, and convenience as well as comfort to both drivers and passengers. However, message trustfulness is a challenge because the propagation of false message by malicious vehicles induces unreliable and ineffectiveness of VANETs, Therefore, we need a reliable reputation method to ensure message trustfulness. In this paper, we consider a vulnerability against the Sybil attack of the previous reputation systems based on blockchain and suggest a new reputation system which resists against Sybil attack on the previous system. We propose an initial authentication process as a countermeasure against a Sybil attack and provide a reliable reputation with a cooperative message delivery to cope with message omission. In addition, we use Homomorphic Commitment to protect the privacy breaches in VANETs environment.

• Journal of Arbitration Studies
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• v.33 no.3
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• pp.129-146
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• 2023

We construct a signaling game model between the arbitrator and claimants, in which the arbitrator's marketing amount is adopted as the signaling device. Assuming that the parties to the dispute select an arbitrator, and if there is a difference in the arbitrator's fee depending on the arbitrator's reputation, the arbitrator will pay to further enhance his reputation. We would like to analyze the cost differences between arbitrators who already have a high reputation and arbitrators who strive to further enhance their reputation using the signal model. From the Analysis of our study, We derive perfect Bayesian equilibrium of the signaling game and refine the equilibrium into a unique equilibrium by invoking the Intuitive Criterion of Cho and Kreps (1987). Further, we characterize the refined equilibrium.

• Asia Marketing Journal
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• v.25 no.4
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• pp.207-218
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• 2024

Considering the rising interest in environmental, social, and governance (ESG) globally, various studies have shown that ESG practice increases firm value; however, there is still much debate. This study focuses on the relationship between ESG practice and firm value. Further, we identify the mechanisms constituting this relationship to address relevant research gaps. Specifically, this study examines the connection between ESG practice and corporate valuation, emphasizing the mediating role of a company's reputation. Using panel analysis of data from 145 Korean firms (2014-2021), the study reveals that ESG practices notably enhance firm value, signaling their significance to stakeholders. Corporate reputation acts as a bridge between ESG efforts and value, with corporate reputation's influence varying across industries. This research presents broad implications for both academic and industrial fields, highlighting the strategic importance of ESG in enhancing firm value.

• Journal of Digital Convergence
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• v.17 no.10
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• pp.447-452
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• 2019

This paper analyzed the impact of nation and celebrity reputation on purchase intention in Kazakhstan. Kazakhstan people aged 10 to 30 years were surveyed. The study proved that the national reputation has positive impacts on the purchase intention of Korean products. However, the Korean celebrity reputation has not statistically affected the intention of purchasing Korean products. In other words, it confirmed that the country of origin effect of Korea is affecting purchases of products from the countries concerned. Therefore, based on the country's reputation for Korea in Kazakhstan, it is believed that the promotion activities of Korean products will encourage consumers to make purchases.

• Korean journal of communication and information
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• v.39
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• pp.506-543
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• 2007

The purpose of this study is to explore the relationship between national reputation, culture and communication based on the intercultural communication theory. The 18 foreign residents in Korea were interviewed. The analysis of in-depth interview reveals that culture and communication are very important factors in establishing the national reputation. The qualitative research showcases that the cultural acculturation types(separation, integration, and assimilation) are grouped as foreigners adapt and acculturate to the residence. Especially, the assimilation is very essential type in having the in-group expectancy and the loyalty to Korea. The results reveal that a higher level of heterogeneity of a personal network('Korean in-group network') is associated with a higher level of reputation and loyalty to Korea. This suggests that having outgroup members in individuals' personal networks facilitates outgroup communication competence and loyalty to Korea.

• Asia Marketing Journal
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• v.11 no.2
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• pp.97-119
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• 2009

The growth of international trade and the formation of supranational economic and political trading blocks have noticeably widened the presence on the market of products of different national origins. This has stimulated interest in explaining the Country-of-Origin (COO) role in domestic and international markets and its consequences on consumer behaviour. Since the consumer purchasing decisions can be decisive to the success of a company's strategy in domestic and foreign markets, the objective of this study is to present empirical evidence on the extent to which reputation of firms associated to a certain COO are related to consumer purchase intention. Additionally our study considers ethnocentrism as a variable that partially explains the rejection of imports products based on its foreign origin. The empirical application of the proposed model is related to the purchase of Korean automobiles which represents 5.7% of the national market share in Spain. Structural equation modelling was used to analyse the data collected from 202 personal interviews carried out in a large Spanish region. The results show that reputation of firms associated to a certain COO in an important factor to establish business relationships involving consumers and firms from different countries and increase intentions to purchase Korean products. Additionally, ethnocentric consumers prefer to purchase domestic products rather than foreign imports as an attempt to protect national economy however the negative effect of ethnocentrism is weaker than positive effect of firms reputation of a COO.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.6 no.4
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• pp.973-988
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• 2012

Delay tolerant networks (DTNs) characterized by the lack of guaranteed end-to-end paths exploit opportunistic data forwarding mechanism, which depends on the hypothesis that nodes are willing to store, carry, and forward the in-transit messages in an opportunistic way. However, this hypothesis might easily be violated by the presence of selfish nodes constrained with energy, bandwidth, and processing power. To address this problem, we propose a practical reputation-based incentive scheme, named PRI, to stimulate honest forwarding and discipline selfish behavior. A novel concept of successful forwarding credential and an observation protocol are presented to cope with the detection of nodes' behavior, and a reputation model is proposed to determine egoistic individuals. The simulation results demonstrate the effectiveness and practicality of our proposal.