Results 11 to 20 of about 141,047 (269)

To permute or not to permute [PDF]

open access: yesBioinformatics, 2006
Abstract Permutation test is a popular technique for testing a hypothesis of no effect, when the distribution of the test statistic is unknown. To test the equality of two means, a permutation test might use a test statistic which is the difference of the two sample means in the univariate case.
Yifan Huang   +3 more
openaire   +2 more sources

Permutations on the Random Permutation [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2015
The random permutation is the Fraïssé limit of the class of finite structures with two linear orders. Answering a problem stated by Peter Cameron in 2002, we use a recent Ramsey-theoretic technique to show that there exist precisely 39 closed supergroups of the automorphism group of the random permutation, and thereby expose all symmetries of this ...
Julie Linman, Michael Pinsker
openaire   +3 more sources

Permutation Resemblance

open access: yesIEEE Transactions on Information Theory, 2023
Motivated by the problem of constructing bijective maps with low differential uniformity, we introduce the notion of permutation resemblance of a function, which looks to measure the distance a given map is from being a permutation. We prove several results concerning permutation resemblance and show how it can be used to produce low differentially ...
Li-An Chen, Robert S. Coulter
openaire   +2 more sources

Prolific Permutations [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2021
The concept of prolificity was previously introduced by the authors in the context of compositions of integers. We give a general interpretation of prolificity that applies across a range of relational structures defined in terms of counting embeddings.
Michael Albert 0001, Murray Tannock
openaire   +1 more source

PERMUTATIONS [PDF]

open access: yesCladistics, 1994
Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/31724/1/0000662 ...
Farris, James S.   +3 more
openaire   +4 more sources

Cryptanalzing a Novel Hyper-Chaotic Image Encryption Scheme Based on Pixel-Level Filtering and DNA-Level Diffusion

open access: yesIEEE Access, 2020
As we know, improving security is one of the most important motivations for designing new image encryption schemes. However, the security of some new image encryption schemes has not been fully analyzed and evaluated.
Wei Feng, Jing Zhang
doaj   +1 more source

PerMallows: An R Package for Mallows and Generalized Mallows Models

open access: yesJournal of Statistical Software, 2016
In this paper we present the R package PerMallows, which is a complete toolbox to work with permutations, distances and some of the most popular probability models for permutations: Mallows and the Generalized Mallows models.
Ekhine Irurozki   +2 more
doaj   +1 more source

Statistical dependence and shape of Young tableau

open access: yes4 open, 2023
Given two continuous random variables, X and Y, we study the relationship between their statistical dependence and the Young tableau of the permutation defined from the graph of a bivariate sample coming from (X, Y). From a sample of size n of (X, Y), we
García Jesús E.   +2 more
doaj   +1 more source

Differentially 4-Uniform Permutations with the Best Known Nonlinearity from Butterflies

open access: yesIACR Transactions on Symmetric Cryptology, 2017
Many block ciphers use permutations defined over the finite field F22k with low differential uniformity, high nonlinearity, and high algebraic degree to provide confusion. Due to the lack of knowledge about the existence of almost perfect nonlinear (APN)
Shihui Fu, Xiutao Feng, Baofeng Wu
doaj   +1 more source

Permutation tableaux and permutation patterns

open access: yesJournal of Combinatorial Theory, Series A, 2007
Clarification of proofs (thanks to referees); report on progress on our open problems by Burstein, Corteel, Eriksen, Reifegerste, and Viennot. 25 pages, 7 figures.
Einar Steingrímsson, Lauren K. Williams
openaire   +2 more sources

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