ICML 2022spotlight18 citations
Regret Bounds for Stochastic Shortest Path Problems with Linear Function Approximation
Daniel Vial, Advait Parulekar, Sanjay Shakkottai, R Srikant
Abstract
We propose an algorithm that uses linear function approximation (LFA) for stochastic shortest path (SSP). Under minimal assumptions, it obtains sublinear regret, is computationally efficient, and uses stationary policies. To our knowledge, this is the first such algorithm in the LFA literature (for SSP or other formulations). Our algorithm is a special case of a more general one, which achieves regret square root in the number of episodes given access to a computation oracle.
BibTeX
@InProceedings{pmlr-v162-vial22a,
title = {Regret Bounds for Stochastic Shortest Path Problems with Linear Function Approximation},
author = {Vial, Daniel and Parulekar, Advait and Shakkottai, Sanjay and Srikant, R},
booktitle = {Proceedings of the 39th International Conference on Machine Learning},
pages = {22203--22233},
year = {2022},
editor = {Chaudhuri, Kamalika and Jegelka, Stefanie and Song, Le and Szepesvari, Csaba and Niu, Gang and Sabato, Sivan},
volume = {162},
series = {Proceedings of Machine Learning Research},
month = {17--23 Jul},
publisher = {PMLR},
pdf = {https://proceedings.mlr.press/v162/vial22a/vial22a.pdf},
url = {https://proceedings.mlr.press/v162/vial22a.html},
abstract = {We propose an algorithm that uses linear function approximation (LFA) for stochastic shortest path (SSP). Under minimal assumptions, it obtains sublinear regret, is computationally efficient, and uses stationary policies. To our knowledge, this is the first such algorithm in the LFA literature (for SSP or other formulations). Our algorithm is a special case of a more general one, which achieves regret square root in the number of episodes given access to a computation oracle.}
}