this paper attempts to rank the effective factors in making trust in social networks to provide the possibility of attracting and increasing users’ trust on these social networks for providers and designers of online social networks. identifying the effective factors in making trust in social networks is a multi-criteria decision making problem and most of effective factors are ambiguous and un...

Rank tests are widely used for exploratory and formal inference in the health and social sciences. With the widespread use of data from complex survey samples in medical and social research, there is increasing demand for versions of rank tests that account for the sampling design. We propose a general approach to constructing design-based rank tests when comparing groups within a complex sampl...

The most critical challenge for the recommendation system is to achieve the high prediction quality on the large scale sparse data contributed by the users. In this paper, we present a novel approach to the social recommendation problem, which takes the advantage of the graph Laplacian regularization to capture the underlying social relationship among the users. Differently from the previous ap...

In the past precision of information retrieval systems has been evaluated based on general subject queries and some specific query domains both manually and automatically. Manually evaluating the effectiveness of information retrieval systems, in terms of relevance, requires a large amount of human effort and time. Automatic evaluation is much better in adapting to the fast changing web and sea...

As Kraus, Tan, and Tannenbaum compellingly argued in their thoughtful target article, there is little doubt that social class has a pervasive influence on human cognition. Here, we build on their article by examining how and why wealth and signals of wealth influence rank dynamics. In our view, a comprehensive account of the impact of social class on psychological functioning must address not o...

OBJECTIVES Social mentality theory outlines how specialist systems have evolved to facilitate different types of social behaviour such as caring for offspring, forming alliances, and competing for resources. This research explored how different types of self-experience are linked to the different social mentalities of competitive social ranking (focusing on gaining and defending one's social po...