Green Space and Happiness of Developed Countries

In this study, the statistical relationship between green space and happiness of developed countries has been investigated. We found that there is a correlation between urban green space and happiness, and this relationship becomes stronger among countries with higher GDP.

FirmCore Decomposition of Multilayer Networks

We present a new family of dense subgraphs in multilayer networks, and show that it satisfies many of the nice properties of $k$-cores. Also, it has a polynomial time algorithm, making it a powerful tool for understanding the structure of massive networks.

Anomaly Detection in Multiplex Dynamic Networks

We work on an anomaly detection approach that not only detects suspicious behaviours with respect to one type of relationship but also can consider different types of relationships and find anomalous activities of each node with respect to its own type.