Users face a dazzling array of choices on the Web when it comes to choosing which product to buy, which video to watch, etc. The trend of social information processing means users increasingly rely not only on their own preferences, but also on friends when making various adoption decisions. In this paper, we investigate the effects of social correlation on users’ adoption of items. Given a use...

1. Pursuant to Economic and Social Council resolution 2006/18, the Commission for Social Development has included the agenda item entitled “Emerging issues” in its programme of work since its 2007-2008 review and policy cycle. Under this agenda item, the Commission addresses current issues affecting social development that require urgent consideration or new cross-cutting issues in the context ...

OBJECTIVE To develop a spinal cord injury (SCI)-focused version of PROMIS and Neuro-QOL social domain item banks; evaluate the psychometric properties of items developed for adults with SCI; and report information to facilitate clinical and research use. DESIGN We used a mixed-methods design to develop and evaluate Ability to Participate in Social Roles and Activities and Satisfaction with So...

The prevalence of online social network makes it compulsory to study how relations affect user choice. However, most existing methods leverage only first-order relations, that is, the direct neighbors are connected target user. high-order e.g., friends friends, which very informative reveal preference, have been largely ignored. In this work, we focus on modeling indirect influence from in netw...

Recently, tag recommendation (TR) has become a very hot research topic in data mining and related areas. However, neither co-occurrence based methods which only use the item-tag matrix nor content based methods which only use the item content information can achieve satisfactory performance in real TR applications. Hence, how to effectively combine the item-tag matrix, item content information,...

Social recommendation, that an individual recommends an item to another, has gained popularity and success in web applications such as online sharing and shopping services. It is largely different from a traditional recommendation where an automatic system recommends an item to a user. In a social recommendation, the interpersonal influence plays a critical role but is usually ignored in tradit...

In multidimensional item response theory (MIRT), it is possible for the estimate of a subject’s ability in some dimension to decrease after they have answered a question correctly. This paper investigates how and when this type of paradoxical result can occur. We demonstrate that many response models and statistical estimates can produce paradoxical results and that in the popular class of line...

Despite being distinct, online social spaces are governed by norms and conventions reminiscent of those that govern offline social spaces. Our research into the ways young people’s ‘private’ or ‘quasi-private’ spaces are managed indicates that the strategies used to exert a sense of control over sites like Facebook borrow heavily from the strategies employed to manage offline private spaces lik...