A finite horizon optimal multiple switching problem

B Djehiche, S Hamadene, A Popier - SIAM Journal on Control and …, 2009 - SIAM
-1We consider the problem of optimal multiple switching in a finite horizon when the state of
the system, including the switching costs, is a general adapted stochastic process. The …

Backward SDEs with constrained jumps and quasi-variational inequalities

I Kharroubi, J Ma, H Pham, J Zhang - 2010 - projecteuclid.org
We consider a class of backward stochastic differential equations (BSDEs) driven by
Brownian motion and Poisson random measure, and subject to constraints on the jump …

[HTML][HTML] Randomized filtering and Bellman equation in Wasserstein space for partial observation control problem

E Bandini, A Cosso, M Fuhrman, H Pham - Stochastic Processes and their …, 2019 - Elsevier
We study a stochastic optimal control problem for a partially observed diffusion. By using the
control randomization method in Bandini et al.(2018), we prove a corresponding …

Principal-agent problem with multiple principals

K Hu, Z Ren, J Yang - Stochastics, 2023 - Taylor & Francis
We consider a moral hazard problem with multiple principals in a continuous-time model.
The agent can only work exclusively for one principal at a given time, so faces an optimal …

Viscosity solutions of systems of PDEs with interconnected obstacles and switching problem

S Hamadene, MA Morlais - Applied Mathematics & Optimization, 2013 - Springer
This paper deals with existence and uniqueness of a solution in viscosity sense, for a system
of m variational partial differential inequalities with inter-connected obstacles. A particular …

Optimal portfolio liquidation with execution cost and risk

I Kharroubi, H Pham - SIAM Journal on Financial Mathematics, 2010 - SIAM
We study the optimal portfolio liquidation problem over a finite horizon in a limit order book
with bid-ask spread and temporary market price impact penalizing speedy execution trades …

Discrete-time approximation of BSDEs and probabilistic schemes for fully nonlinear PDEs

B Bouchard, R Elie, N Touzi - Advanced financial modelling, 2009 - degruyter.com
The aim of this paper is to provide a survey on recent advances on probabilistic numerical
methods for nonlinear PDEs, which serve as an alternative to classical deterministic …

Backward SDEs for optimal control of partially observed path-dependent stochastic systems: a control randomization approach

E Bandini, A Cosso, M Fuhrman, H Pham - The Annals of Applied …, 2018 - JSTOR
We introduce a suitable backward stochastic differential equation (BSDE) to represent the
value of an optimal control problem with partial observation for a controlled stochastic …

Control randomisation approach for policy gradient and application to reinforcement learning in optimal switching

R Denkert, H Pham, X Warin - arXiv preprint arXiv:2404.17939, 2024 - arxiv.org
We propose a comprehensive framework for policy gradient methods tailored to continuous
time reinforcement learning. This is based on the connection between stochastic control …

Randomized and backward SDE representation for optimal control of non-Markovian SDEs

M Fuhrman, H Pham - 2015 - projecteuclid.org
We study optimal stochastic control problems for non-Markovian stochastic differential
equations (SDEs) where the drift, diffusion coefficients and gain functionals are path …