Social media has become an increasingly important venue for social interaction and communication. Most previous research have shown the information sharing on social media platforms, but few focus on shopping related sharing (SRS) information and how these information influence consumer decision-making. Through a combination of interviews with observations in our lab to the users of social medi...

Targeted online advertising elicits a potential threat.A commercial agent has a chance to mitigate the visibility of hisopponents because their sales or services are of similar types. Inthis paper, we consider the competition for attention in popularonline social networks (OSNs) that usually employ a timeline-based homepage to sort messages chronologically in a limitedvi...

In recent years, our research group has been investigating the use of computing technology to support noviceoriented computer-based musical activities. CODES (Cooperative Music Prototyping Design) is a Web-based environment designed to allow novice users to create musical prototypes through combining basic sound patterns. This paper shows how CODES has been changed to provide support to some co...

This study explores the impact of Social Network Sites (SNSs) usage on the formation of online bridging and bonding social capital, and the relationship between online and offline social capital. It is hypothesized that use of SNSs forms online social capital and online and offline social capital are positively correlated. A Chinese SNS, Renren, is studied specifically. Social capital scales an...

The study explores whether the use of Twitter in Massive Open Online Courses (MOOCs) promotes the interaction among learners. The social network analysis shows that instructors still play a very central role in the social media communication and the communication network between students shrinking over time. The mere use of social media fails to promote learner-learner interaction. More researc...

To uncover the mechanisms underlying the collaborative production of knowledge, we investigate a very large online Question and Answer system that includes the question asking and answering activities of millions of users over five years. We created knowledge networks in which nodes are questions and edges are the successive answering activities of users. We find that these networks have two co...

Instant quality feedback in the form of online peer ratings is a prominent feature of modern massive online social networks (MOSNs). It allows network members to indicate their appreciation of a post, comment, photograph, etc. Some MOSNs support both positive and negative (signed) ratings. In this study, we rated 11 thousand MOSN member profiles and collected user responses to the ratings. MOSN...

Social Network Analysis (SNA) provides graph algorithms to characterize the structure of social networks, strategic positions in these networks, specific sub-networks and decompositions of people and activities. Online social platforms like Facebook form huge social networks, enabling people to connect, interact and share their online activities across several social applications. We extended S...

Nowadays, users join several on-line social networks (OSNs) so that design and development applications able to work on multiple OSNs is a challenging issue. However, OSNs present relevant differences from both the adopted terminology (similar concepts have different names) and the supported technology (for example, in the APIs provided for data extraction). Consequently, the heterogeneity of O...

Driven by the increasing popularity of crowdfunding, academic researchers have examined the impacts of internal social capital accumulated on crowdfunding platforms and external social capital formed through online and offline friend networks on campaign success. However, no research has examined the impacts of social networks from a structural perspective. In the current research, we investiga...