The Mixing of Markov Chains on Linear Extensions in Practice

@inproceedings{Talvitie2017TheMO,
  title={The Mixing of Markov Chains on Linear Extensions in Practice},
  author={Topi Talvitie and Teppo Niinimaki and Mikko Koivisto},
  booktitle={IJCAI},
  year={2017}
}
We investigate almost uniform sampling from the set of linear extensions of a given partial order. The most efficient schemes stem from Markov chains whose mixing time bounds are polynomial, yet impractically large. We show that, on instances one encounters in practice, the actual mixing times can be much smaller than the worst-case bounds, and particularly so for a novel Markov chain we put forward. We circumvent the inherent hardness of estimating standard mixing times by introducing a… CONTINUE READING

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