In this paper, we introduce a geometric model for linear symmetric eigenvalue problem, which is motivated by the fact that any eigenvalue of a symmetric positive definite matrix A is the reciprocal of the square length of an axis of the ellipsoid xTAx = 1. Hence, to find the largest eigenvalue...

In the new age of circular economy system, trade-in scheme is a quite common initiative that manufacturers use to respond to environmental protection requirements. In this study, we focus on two types of trade-ins, i.e., ‘trade old for cash (T-C)’ and ‘trade old for new (T-N)’. To...

Online distribution is highly unpredictable for supply chain participants, owing to the fast and furious emergence of green e-commerce. Determining the best selection of the online channel has always been a major concern for manufacturers. In this study, we create a stylized model of a green...

There has been a surge of interest in community detection in homogeneous single-relational networks which contain only one type of nodes and edges. However, many real-world systems are naturally described as heterogeneous multi-relational networks which contain multiple types of nodes and edges....