Volatility clustering and fat tails are prominently observed in financial markets. Here, we analyze the underlying mechanisms of three agent-based models explaining these stylized facts in terms of market instabilities and compare them on empirical grounds. To this end, we first develop a...

Purpose The way to measure the value of an enterprise's R&D investments remains elusive for theoretical and empirical study on innovation economics. The paper aims to discuss this issue. Design/methodology/approach This paper expands the asset-value model pioneered by Griliches (1981) and...