An increasing number of local shops offer local same-day delivery to compete with the online giants. However, the distribution of parcels from individual shops to customers reduces the rare consolidation opportunities in the last mile even further. Thus, shops start collaborating on urban...

Crowdsourced transportation by independent suppliers (or drivers) is central to urban delivery and mobility platforms. While utilizing crowdsourced resources has several advantages, it comes with the challenge that suppliers are not bound to assignments made by the platforms. In practice,...

For underlying asset motions calibrating skewness and kurtosis beyond the volatility it becomes possible to consider these entities as responding to their observations in past data. Models with stochastic skewness and kurtosis are constructed by allowing the second, third and fourth power...

A unifying methodology is presented, which jointly considers correlated Brownian motion processes with Poisson jumps in both revenue and policy. The methodology is unique in considering price and quantity as geometric Brownian motion processes with jumps following a Poisson process in revenue...

I extend traditional projection methods by using neural networks as a function approximator to solve continuous-time models. The method is well-suited for high-dimensional settings such as those that arise in the presence of many assets, and can capture the strong non-linearities that occur for...

We introduce and study the following default cascade process in stochastic financial networks. We consider a finite set of agents, holding claims on each other, who meet and interact pairwise with their counterparties at random times (agents i and j meet at times of a Poisson process) and, upon...

In this paper we propose a stochastic volatility model for crude oil markets that has the particularity to feature a regime-switching price of variance-risk. While preserving tractability, this model allows us to capture the episodes of negative and positive variance risk premium. A two-state...

Contrary to the claims made by several authors, a financial market model in which the price of a risky security follows a reflected geometric Brownian motion is not arbitrage-free. In fact, such a model is unsuitable for contingent claim valuation because it violates even the weakest...