Decoding Output Sequences for Discrete-Time Linear Hybrid Systems.
Decoding Output Sequences for Discrete-Time Linear Hybrid Systems.
复制标题
解码离散时间线性混合系统的输出序列。
DOI:
10.1145/3501710.3519530
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发表时间:
2022
期刊:
影响因子:
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通讯作者:
Sankaranarayanan, Sriram
中科院分区:
文献类型:
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作者:
Narasimhamurthy, Monal;Sankaranarayanan, Sriram
In this paper, we study the “decoding” problem for discrete-time, stochastic hybrid systems with linear dynamics in each mode. Given an output trace of the system, the decoding problem seeks to construct a sequence of modes and states that yield a trace “as close as possible” to the original output trace. The decoding problem generalizes the state estimation problem, and is applicable to hybrid systems with non-determinism. The decoding problem is NP-complete, and can be reduced to solving a mixed-integer linear program (MILP). In this paper, we decompose the decoding problem into two parts: (a) finding a sequence of discrete modes and transitions; and (b) finding corresponding continuous states for the mode/transition sequence. In particular, once a sequence of modes/transitions is fixed, the problem of “filling in” the continuous states is performed by a linear programming problem. In order to support the decomposition, we “cover” the set of all possible mode/transition sequences by a finite subset. We use well-known probabilistic arguments to justify a choice of cover with high confidence and design randomized algorithms for finding such covers. Our approach is demonstrated on a series of benchmarks, wherein we observe that relatively tiny fraction of the possible mode/transition sequences can be used as a cover. Furthermore, we show that the resulting linear programs can be solved rapidly by exploiting the tree structure of the set cover.
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DOI:
10.1007/978-3-030-32079-9_20
发表时间:
2019
期刊:
Lecture notes in computer science
影响因子:
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作者:
Yoon, Hansol;Chou, Yi;Chen, Xin;Frew, Eric;Sankaranarayanan, Sriram
通讯作者:
Sankaranarayanan, Sriram
DOI:
10.1109/iros45743.2020.9340755
发表时间:
2020-10
期刊:
2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
影响因子:
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作者:
Yi‐Shyong Chou;Hansol Yoon;S. Sankaranarayanan
通讯作者:
Yi‐Shyong Chou;Hansol Yoon;S. Sankaranarayanan
DOI:
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发表时间:
1998
期刊:
Proceedings 19th IEEE Real-Time Systems Symposium (Cat. No.98CB36279)
影响因子:
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作者:
R. Alur;R. Kurshan;Mahesh Viswanathan
通讯作者:
Mahesh Viswanathan
DOI:
10.1109/icra48506.2021.9561193
发表时间:
2021
期刊:
2021 IEEE International Conference on Robotics and Automation (ICRA
影响因子:
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作者:
Yoon, Hansol;Sankaranarayanan, Sriram
通讯作者:
Sankaranarayanan, Sriram
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