We develop an early warning system and subsequent optimal intervention policy to avoid
the formation of disproportional dominance (“winner takes all,” WTA) in growing complex …

Krugman (1991)'s target zone model for exchange rate dynamics has become the reference
of a large part of this literature. Despite its simplicity and elegance, empirical evidence has …

US antitrust laws have repeatedly responded to the changing needs of the nation's economy.
As the marketplace grows ever more data-driven, we find ourselves at yet another critical …

Currency target zones have been under scrutiny for the past three decades, which led to the
development of two broad classes of quantitative models: Phenomenological ones that …

In social networks, bursts of activity often result from the imitative behavior between
interacting agents. The Ising model, along with its variants in the social sciences, serves as a …

A model that combines economic growth rate fluctuations at the microscopic and macroscopic
levels is presented. At the microscopic level, firms are growing at different rates while also …

With rising political debates about the role of environmental, social, and corporate governance
(ESG), companies must rethink their prioritization of different stakeholder groups. We thus …

The distribution of firm sizes is known to be heavy tailed. In order to account for this stylized
fact, previous economic models have focused mainly on growth through investments in a …

Conventionally, random forests are built from “greedy” decision trees which each consider
only one split at a time during their construction. The sub-optimality of greedy implementation …

We introduce a hypergraph-based approach to analyze information flow and investor attention
transfers through news outlets in financial markets. Extending traditional graph models …