Archives

18
Nov

Incentives, lockdown, and testing : from Thucydides’s Analysis to the COVID-19 pandemie - E. Hubert, T. Mastrolia, D. Possamaï and X. Warin

We consider the control of the COVID–19 pandemic via incentives, through either stochastic SIS or SIR compartmental models. When the epidemic is ongoing, the population can reduce interactions between individuals ...

13
Nov

Equilibrium price in intraday electricity markets - René Aid, Andrea Cosso, and Huyên Pham

We formulate an equilibrium model of intraday trading in electricity markets. Agents face balancing constraints between their customers consumption plus intraday sales and their production plus intraday purchases. They have ...

1
Juil

Deep backward multistep schemes for nonlinear PDEs and approximation error analysis - M. Germain, H. Pham & X. Warin

We develop multistep machine learning schemes for solving nonlinear partial differential equations (PDEs) in high dimension. The method is based on probabilistic representation of PDEs by backward stochastic differential equations ...

1
Juil

Fast multivariate empirical cumulative distribution function with connection to kernel density estimation - Nicolas Langrené & Xavier Warin

This paper revisits the problem of computing empirical cumulative distribution functions (ECDF) efficiently on large, multivariate datasets. Computing an ECDF at one evaluation point requires O(N) operations on a dataset ...

1
Juil

Reaching New Lows? The Pandemic's Consequences for Electricity Markets - David Benatia

The large reductions in electricity demand caused by the COVID-19 crisis have disrupted electricity systems worldwide. This article draws insights from New York into the consequences of the pandemic for ...

1
Juil

Estimation of the number of factors in a multi-factorial Heath-Jarrow-Morton model in electricity markets - Olivier Féron & Pierre Gruet

In this paper we study the calibration of specific multi-factorial Heath-Jarrow-Morton models to electricity market prices, with a focus on the estimation of the optimal number of factors. We describe ...

21
Avr

A Principal-Agent approach to study Capacity Remuneration Mechanisms - Clémence Alasseur, Heythem Farhat and Marcelo Saguan

We propose to study electricity capacity remuneration mechanism design through a Principal-Agent approach. The Principal represents the aggregation of electricity consumers (or a representative entity), subject to the physical risk of shortage, ...

19
Déc

Numerical resolution of McKean-Vlasov FBSDEs using neural networks - Maximilien GERMAIN, Joseph MIKAEL, and Xavier WARIN

We propose several algorithms to solve McKean-Vlasov Forward Backward Stochastic Differential Equations. Our schemes rely on the approximating power of neural networks to estimate the solution or its gradient through ...

27
Juil

Neural networks-based backward scheme for fully nonlinear PDEs - H. Pham, X. Warin

We propose a numerical method for solving high dimensional fully nonlinear partial differential equations (PDEs). Our algorithm estimates simultaneously by backward time induction the solution and its gradient by multi-layer ...

27
Juin

Efficient Volatility Estimation in a Two-factor Model - O. Féron, P. Gruet, and M. Hoffmann

We statistically analyse a multivariate HJM diffusion model with stochastic volatility. The volatility process of the first factor is left totally unspecified while the volatility of the second factor is ...

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