Lilac: A Modal Separation Logic for Conditional Probability
Lilac: A Modal Separation Logic for Conditional Probability
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Lilac:条件概率的模态分离逻辑
DOI:
10.1145/3591226
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发表时间:
2023
影响因子:
--
通讯作者:
Holtzen, Steven
中科院分区:
文献类型:
--
作者:
Li, John M.;Ahmed, Amal;Holtzen, Steven
We present Lilac, a separation logic for reasoning about probabilistic programs where separating conjunction captures probabilistic independence. Inspired by an analogy with mutable state where sampling corresponds to dynamic allocation, we show how probability spaces over a fixed, ambient sample space appear to be the natural analogue of heap fragments, and present a new combining operation on them such that probability spaces behave like heaps and measurability of random variables behaves like ownership. This combining operation forms the basis for our model of separation, and produces a logic with many pleasant properties. In particular, Lilac has a frame rule identical to the ordinary one, and naturally accommodates advanced features like continuous random variables and reasoning about quantitative properties of programs. Then we propose a new modality based on disintegration theory for reasoning about conditional probability. We show how the resulting modal logic validates examples from prior work, and give a formal verification of an intricate weighted sampling algorithm whose correctness depends crucially on conditional independence structure.
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影响因子:
1.5
作者:
Chang, JT;Pollard, D
通讯作者:
Pollard, D
DOI:
10.1145/964001.964024
发表时间:
2004-01
期刊:
Proceedings of the 31st ACM SIGPLAN-SIGACT symposium on Principles of programming languages
影响因子:
--
作者:
P. O'Hearn;Hongseok Yang;J. C. Reynolds
通讯作者:
P. O'Hearn;Hongseok Yang;J. C. Reynolds
影响因子:
0.5
作者:
Galmiche, D;Méry, D;Pym, D
通讯作者:
Pym, D
DOI:
10.1109/lics.2017.8005137
发表时间:
2017
期刊:
--
影响因子:
--
作者:
Heunen C
通讯作者:
Heunen C
DOI:
10.1109/lics52264.2021.9470673
发表时间:
2021-01
期刊:
2021 36th Annual ACM/IEEE Symposium on Logic in Computer Science (LICS)
影响因子:
--
作者:
Li Zhou;G. Barthe;Justin Hsu;M. Ying;Nengkun Yu
通讯作者:
Li Zhou;G. Barthe;Justin Hsu;M. Ying;Nengkun Yu