no code implementations • 27 Apr 2024 • Robert Denkert, Huyên Pham, Xavier Warin
We propose a comprehensive framework for policy gradient methods tailored to continuous time reinforcement learning.
no code implementations • 8 Sep 2023 • Huyên Pham, Xavier Warin
We develop a new policy gradient and actor-critic algorithm for solving mean-field control problems within a continuous time reinforcement learning setting.
no code implementations • 11 Apr 2023 • Mohamed Hamdouche, Pierre Henry-Labordere, Huyên Pham
We propose a novel generative model for time series based on Schr{\"o}dinger bridge (SB) approach.
no code implementations • 13 Mar 2023 • Noufel Frikha, Maximilien Germain, Mathieu Laurière, Huyên Pham, Xuanye Song
We study policy gradient for mean-field control in continuous time in a reinforcement learning setting.
no code implementations • 22 Dec 2022 • Huyên Pham, Xavier Warin
This paper is devoted to the numerical resolution of McKean-Vlasov control problems via the class of mean-field neural networks introduced in our companion paper [25] in order to learn the solution on the Wasserstein space.
no code implementations • 27 Oct 2022 • Huyên Pham, Xavier Warin
We study the machine learning task for models with operators mapping between the Wasserstein space of probability measures and a space of functions, like e. g. in mean-field games/control problems.
no code implementations • 19 May 2022 • William Lefebvre, Grégoire Loeper, Huyên Pham
Compared to existing methods, the addition of a differential loss function associated to the gradient, and augmented training sets with Malliavin derivatives of the forward process, yields a better estimation of the PDE's solution derivatives, in particular of the second derivative, which is usually difficult to approximate.
no code implementations • 20 Jan 2021 • Maximilien Germain, Huyên Pham, Xavier Warin
This paper presents machine learning techniques and deep reinforcement learningbased algorithms for the efficient resolution of nonlinear partial differential equations and dynamic optimization problems arising in investment decisions and derivative pricing in financial engineering.
Optimization and Control Computational Finance
no code implementations • 29 Oct 2020 • Carmine de Franco, Johann Nicolle, Huyên Pham
We study a discrete-time portfolio selection problem with partial information and maxi\-mum drawdown constraint.
no code implementations • 19 Oct 2020 • René Aid, Andrea Cosso, Huyên Pham
(i) When there is no uncertainty on generation, it is shown that the market price is a convex combination of forecasted marginal cost of each agent, with deterministic weights.
no code implementations • 17 Sep 2020 • William Lefebvre, Gregoire Loeper, Huyên Pham
Such consideration is motivated as follows: (i) On the one hand, it is a way to robustify the mean-variance allocation in case of misspecified parameters, by "fitting" it to a reference portfolio that can be agnostic to market parameters; (ii) On the other hand, it is a procedure to track a benchmark and improve the Sharpe ratio of the resulting portfolio by considering a mean-variance criterion in the objective function.
no code implementations • 5 Feb 2019 • Côme Huré, Huyên Pham, Xavier Warin
We analyze the convergence of the deep learning schemes and provide error estimates in terms of the universal approximation of neural networks.
no code implementations • 11 Dec 2018 • Côme Huré, Huyên Pham, Achref Bachouch, Nicolas Langrené
This paper develops algorithms for high-dimensional stochastic control problems based on deep learning and dynamic programming.
no code implementations • 3 May 2017 • Frédéric Abergel, Côme Huré, Huyên Pham
In particular, we simulated an order book with constant/ symmet-ric/ asymmetrical/ state dependent intensities, and compared the computed optimal strategy with naive strategies.