Qualitative analysis of POMDPs with temporal logic specifications for robotics applications
Qualitative analysis of POMDPs with temporal logic specifications for robotics applications
复制标题
针对机器人应用的具有时序逻辑规范的 POMDP 定性分析
DOI:
10.1109/icra.2015.7139019
复制
发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Ayush Kanodia
中科院分区:
文献类型:
--
作者:
K. Chatterjee;Martin Chmelík;Raghav Gupta;Ayush Kanodia
We consider partially observable Markov decision processes (POMDPs), that are a standard framework for robotics applications to model uncertainties present in the real world, with temporal logic specifications. All temporal logic specifications in linear-time temporal logic (LTL) can be expressed as parity objectives. We study the qualitative analysis problem for POMDPs with parity objectives that asks whether there is a controller (policy) to ensure that the objective holds with probability 1 (almost-surely). While the qualitative analysis of POMDPs with parity objectives is undecidable, recent results show that when restricted to finite-memory policies the problem is EXPTIME-complete. While the problem is intractable in theory, we present a practical approach to solve the qualitative analysis problem. We designed several heuristics to deal with the exponential complexity, and have used our implementation on a number of well-known POMDP examples for robotics applications. Our results provide the first practical approach to solve the qualitative analysis of robot motion planning with LTL properties in the presence of uncertainty.