3 papers
cs.LG2025
Global Permutation Entropy
Abhijeet Avhale, Joscha Diehl, Niraj Velankar +1
Permutation Entropy, introduced by Bandt and Pompe, is a widely used complexity measure for real-valued time series that is based on the relative order of values within consecutive…
math.CO2024
Efficient counting of permutation patterns via double posets
Joscha Diehl, Emanuele Verri
Corner trees, introduced in "Even-Zohar and Leng, 2021, Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms", allow for the efficient counting of certain permutation…
math.RA2023
Hopf Algebra on Vincular Permutation Patterns
Joscha Diehl, Emanuele Verri
We introduce a new Hopf algebra that operates on pairs of finite interval partitions and permutations of equal length. This algebra captures vincular patterns, which involve specif…