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Sociologists have long converged that the evolution of a Social Networking Service(SNS) is driven by the interplay between users’ preferences (reflected in user-item interaction behavior) and the social network structure (reflected in user-user interaction behavior). Nevertheless, traditional approaches either modeled these two kinds of behaviors in isolation or relied on a static assumption of a...
Many recent studies on finance and social networks discovered that investor's attention is correlated to the financial market movement in terms of the price shocks. Following related findings, a significant and challenging problem is to forecast the direction of the market movement based on vast social media activities. Appropriately processing social networks data and developing models to capture...
The prosperity of content-oriented social media services has raised the new chances for understanding users' social behaviors. Different from traditional social networks, the links in social media are usually influenced by user references rather than the real world connections, thus the traditional methods based on social network evolvement may fail to reveal the adequate links. Meanwhile, the existing...
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