Group Recommendation Robotics Based on External Social-Trust Networks

2019 ◽  
pp. 59-73
Author(s):  
Guang Fang ◽  
Lei Su ◽  
Di Jiang ◽  
Liping Wu
Keyword(s):  
Social Trust ◽  
Group Recommendation ◽  
Trust Networks

scholarly journals Group Recommendation Systems Based on External Social-Trust Networks

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Guang Fang ◽  
Lei Su ◽  
Di Jiang ◽  
Liping Wu
Keyword(s):  
Social Trust ◽  
Recommendation Systems ◽  
External Information ◽  
Group Recommendation ◽  
Trust Network ◽  
Traditional Group ◽  
Preference Rating ◽  
Trust Networks ◽  
Network Utilization ◽  
Group Profile

With the development of social networks and online mobile communities, group recommendation systems support users’ interaction with similar interests or purposes with others. We often provide some advices to the close friends, such as listening to favorite music and sharing favorite dishes. However, users’ personalities have been ignored by the traditional group recommendation systems while the majority is satisfied. In this paper, a method of group recommendation based on external social-trust networks is proposed, which builds a group profile by analyzing not only users’ preferences, but also the social relationships between members inside and outside of the group. We employ the users’ degree of disagreement to adjust group preference rating by external information of social-trust network. Moreover, having a discussion about different social network utilization ratio, we proposed a method to work for smaller group size. The experimental results show that the proposed method has consistently higher precision and leads to satisfactory recommendations for groups.

Mixing Patterns in Social Trust Networks: A Social Identity Theory Perspective

2020 ◽  
pp. 1-13
Author(s):  
Shixi Liu ◽  
Xiaojing Hu ◽  
Shui-Hua Wang ◽  
Yu-Dong Zhang ◽  
Xianwen Fang ◽  
...  
Keyword(s):  
Social Identity ◽  
Social Identity Theory ◽  
Social Trust ◽  
Identity Theory ◽  
Trust Networks ◽  
Mixing Patterns

Conclusion

2018 ◽  
Author(s):  
Nicolette D. Manglos-Weber
Keyword(s):  
Social Relationships ◽  
Social Trust ◽  
Immigrant Integration ◽  
Integration Process ◽  
Opposite Conclusion ◽  
Trust Networks ◽  
Personal Trust ◽  
Religious Membership ◽  
Made In

This chapter summarizes the argument made in the preceding chapters and discusses what it means for religious membership to serve as a basis of social trust, and specifically personal trust enacted within social relationships. It then takes on the question of whether religious membership is ultimately helpful for immigrant integration, a major long-running debate among sociologists. It argues that while there is some evidence that religious membership in an ethnic church can detract from integration, ultimately there is much more evidence to support the opposite conclusion. Furthermore, many of the processes that seem to fuel segregation are in fact the result of inequality and the racial order, which challenge the ability of religious membership to realize its integrative potential. As a result, for transnational Ghanaians, religious memberships and their associated trust networks are generally helpful for the integration process; but not even as much as they could be, or as much as these particular immigrants would like.

Recommender System with Composite Social Trust Networks

2016 ◽  
Vol 13 (2) ◽  
pp. 56-73 ◽  
Author(s):  
Chaochao Chen ◽  
Xiaolin Zheng ◽  
Mengying Zhu ◽  
Litao Xiao
Keyword(s):  
Online Social Networks ◽  
Prediction Accuracy ◽  
Social Trust ◽  
Convergence Speed ◽  
Trust Network ◽  
True Value ◽  
Trust Networks ◽  
Factorization Model ◽  
Implicit Trust ◽  
Probabilistic Matrix Factorization

The development of online social networks has increased the importance of social recommendations. Social recommender systems are based on the idea that users who are linked in a social trust network tend to share similar interests. Thus, how to build an accurate social trust network will greatly affect recommendation performance. However, existing trust-based recommender approaches do not fully utilize social information to build rational trust networks and thus have low prediction accuracy and slow convergence speed. In this paper, the authors propose a composite trust-based probabilistic matrix factorization model, which is mainly composed of two steps: In step 1, the existing explicit trust network and the inferred implicit trust network are used to build a composite trust network. In step 2, the composite trust network is used to minimize both the rating difference and the trust difference between the true value and the inferred value. Experiments based on an Epinions dataset show that the authors' approach has significantly higher prediction accuracy and convergence speed than traditional collaborative filtering technology and the state-of-the-art trust-based recommendation approaches.

scholarly journals Social Trust Formation and Credit Accessibility—Evidence from Rural Households in China

2020 ◽  
Vol 12 (2) ◽  
pp. 667 ◽  
Author(s):  
Tong Zhang ◽  
Huiting Liu ◽  
Pinghan Liang
Keyword(s):  
Risk Sharing ◽  
Social Trust ◽  
Rural Households ◽  
Gift Giving ◽  
Trust Networks ◽  
Trust Formation ◽  
Personal Trust ◽  
Significant Research ◽  
Personal Level ◽  
Community Trust

Trust as a form of social capital plays an important role in improving the cooperation between agents, especially in credit lending activities. Trust building has attracted significant research interest, and gift giving has been shown to be one of its main drivers. Nonetheless, the mechanism of gift giving in the formation of trust networks and the channels through which gift giving and trust affect cooperation require further investigation. In this paper, we first separate social trust into community trust and personal trust, and we examine how gift giving affects the formation of each level of trust. We then explore how trust and gift giving affect rural households’ access to formal and informal sources of credit. Our results show that gift giving mainly helps in forming trust at the personal level rather than the community level. In turn, personal and community trust can facilitate access to informal and formal sources of credit, respectively. In addition, personal trust facilitates access to informal loans for consumption and medical expenses but not production. Overall, our findings show that gift giving is mainly used to build personal trust which facilitates access to informal lending for risk-sharing purposes.

scholarly journals Navigating Trust and Distrust in the Refugee Community of Malta

2021 ◽  
Author(s):  
Luisa Gandolfo
Keyword(s):  
Civil Society ◽  
Social Trust ◽  
Host Community ◽  
Trust Building ◽  
Social Spaces ◽  
Civil Society Organisations ◽  
Refugee Community ◽  
Trust Networks ◽  
Determining Factors ◽  
Political Boundaries

AbstractThis article considers how trust is constructed in the refugee community of Malta, against the backdrop of ongoing and recurrent unrest in Libya. As social trust is re-evaluated, social spaces have become sites of tension where divisions re-emerge along political, ideological, and economic lines. By focusing on the Libyan diaspora, the article presents an insight into the ways that conflict trauma shapes trust-building, and considers the challenges faced by civil society organisations and government bodies in their efforts to facilitate support and community-building on the island. The article is based on 14 interviews conducted in 2015 with members of the Libyan diaspora, and Maltese civil society organisations and government bodies. The interviewees discussed the multifaceted aspects of trust-building, including the legacy of 42 years of political distrust during the regime of the former Libyan leader, Muammar Gaddafi, regional affiliations and divisions, and the continuum of trauma that unfolds in the Maltese Open Centres and in the host community. The findings of the study indicate that there are additional structural impediments that extend beyond the ongoing conflict, including the Maltese detention process, the redrawing of political boundaries around social spaces in the towns, and the role of identity, which present determining factors in the building of social trust. Collectively, these aspects hold implications for integration into the diaspora community on the island, while in the long term, individual recovery from conflict trauma is dependent on the trust-networks that are constructed, or joined, by the refugees.

scholarly journals SOCIAL CAPITAL AND POLITICS: FROM LOSING TRUST IN INSTITUTIONS TO CREATING A WELLBEING SOCIETY

Defendologija ◽  
2020 ◽  
Vol 4 (39-40) ◽  
Author(s):  
Biljana Kovačević
Keyword(s):  
Social Capital ◽  
Citizen Participation ◽  
Social Trust ◽  
Necessary Condition ◽  
Political Processes ◽  
Trust Networks ◽  
Effi Ciency ◽  
Trust In Institutions ◽  
Developmental Opportunities ◽  
Main Components

Social capital is an important factor in the society’s economic, political, andsocietal development. Societies/communities high in social capital are well organizedand they gain their interest or profi t through interest groups, and organized and well-networkedcommunities are deemed to be a very effective mechanism for controlling powers.This proves that social capital, as one of the most signifi cant factors, contributes to thestability of society, its economic prosperity, and political effi ciency. From the standpointof affi rmation, it is the path that almost certainly leads to a prosperous society. On theother hand, societies low in social capital have less developmental opportunities, whichmay to a signifi cant extent affect the functionality of the community at large. The conceptof social capital comprises three main components: trust, networks, and norms. Politicaleffectiveness of the society can be measured through social trust, and political effi ciencyis a necessary condition of high levels of social trust in the community. Contemporarysocieties are characterized by an increasing atomization of individuals, having an impacton citizen participation in civil and political processes, and consequently on the levels oftrust in institutions. This paper attempts to determine the relation between social capitaland politics, in other words, to identifying some of the leading causes of the loss of institutionaltrust. It discusses the importance of social policy regarding social capital withinthe framework of the public policy of society, and the measures that strengthen the wellbeingof society.

scholarly journals Opinion Maximization in Social Trust Networks

2020 ◽  
Author(s):  
Pinghua Xu ◽  
Wenbin Hu ◽  
Jia Wu ◽  
Weiwei Liu
Keyword(s):  
Social Trust ◽  
Opinion Dynamics ◽  
Practical Significance ◽  
Dynamics Model ◽  
Network Characteristics ◽  
Limited Budget ◽  
Trust Networks ◽  
A Site ◽  
Broad Interest ◽  
Bipartite States

Social media sites are now becoming very important platforms for product promotion or marketing campaigns. Therefore, there is broad interest in determining ways to guide a site to react more positively to a product with a limited budget. However, the practical significance of the existing studies on this subject is limited for two reasons. First, most studies have investigated the issue in oversimplified networks in which several important network characteristics are ignored. Second, the opinions of individuals are modeled as bipartite states (e.g., support or not) in numerous studies, however, this setting is too strict for many real scenarios. In this study, we focus on social trust networks (STNs), which have the significant characteristics ignored in the previous studies. We generalized a famed continuous-valued opinion dynamics model for STNs, which is more consistent with real scenarios. We subsequently formalized two novel problems for solving the issue in STNs. In addition, we developed two matrix-based methods for these two problems and experiments on realworld datasets to demonstrate the practical utility of our methods.

Conceptions of Trust in the Qur'an

2011 ◽  
Vol 13 (2) ◽  
pp. 56-85 ◽  
Author(s):  
Nora S. Eggen
Keyword(s):  
Social Trust ◽  
Social Ethics ◽  
Religious Discourse ◽  
Human Being ◽  
Human Beings ◽  
Normative Claim ◽  
Trust Relationship ◽  
Trust Relationships ◽  
The Absolute ◽  
The Guardian

In the Qur'an we find different concepts of trust situated within different ethical discourses. A rather unambiguous ethico-religious discourse of the trust relationship between the believer and God can be seen embodied in conceptions of tawakkul. God is the absolute wakīl, the guardian, trustee or protector. Consequently He is the only holder of an all-encompassing trusteeship, and the normative claim upon the human being is to trust God unconditionally. There are however other, more polyvalent, conceptions of trust. The main discussion in this article evolves around the conceptions of trust as expressed in the polysemic notion of amāna, involving both trust relationships between God and man and inter-human trust relationships. This concept of trust involves both trusting and being trusted, although the strongest and most explicit normative claim put forward is on being trustworthy in terms of social ethics as well as in ethico-religious discourse. However, ‘trusting’ when it comes to fellow human beings is, as we shall see, framed in the Qur'an in less absolute terms, and conditioned by circumstantial factors; the Qur'anic antithesis to social trust is primarily betrayal, ‘khiyāna’, rather than mistrust.

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