Firm relations, which inform competitive environments of firms, are critical to firm operations and are often factored into investor decisions. Previous studies and practices have considered relatively stable and long-term business relations as an indicator of firm market value. Public news...

This study proposes a network-based model with two parameters to find influential authors based on the idea that the prestige of a whole network changes when a node is removed. We apply the Katz–Bonacich centrality to define network prestige, which agrees with the idea behind the PageRank...

In this paper, we establish a viability result for stochastic differential equations (SDEs) driven by a multi-dimensional G-Brownian motion. Then we obtain a sufficient and necessary condition for comparison theorem of multi-dimensional G-SDEs by an equivalent criterion of viability condition...

In this paper, we show that the integration of a stochastic differential equation driven by G-Brownian motion (G-SDE for short) in R can be reduced to the integration of an ordinary differential equation (ODE for short) parameterized by a variable in (Ω,F). By this result, we obtain a...

Purpose – Rating, as a common way of evaluation, is a significant exercise and plays a major role in managerial decision-making in general and in particular online purchasing. The paper aims to discuss these issues. Design/methodology/approach – This study utilizes the theory of social...