منابع مشابه
Emulating Direct Products by Index-Shuffle Graphs
In the theoretical framework of graph embedding and network emulations, we show that the index-shuffle graph (a bounded-degree hypercube-like interconnection network, recently introduced by [ Baumslag and Obrenić (1997): Index-Shuffle Graphs, :::]) efficiently approximates the hypercube in general computations, by emulating the directproduct structure of the hypercube. In the direct product G =...
متن کاملAccess Control for the Shuffle Index
The shuffle index provides confidentiality guarantees for accesses to externally outsourced data. In this paper, we extend the shuffle index with support for access control, that is, for enforcing authorizations on data. Our approach bases on the use of selective encryption and on the organization of data and authorizations in two shuffle indexes. Our proposal enables owners to regulate access ...
متن کاملShuffle Bialgebras
The goal of our work is to study the spaces of primitive elements of the Hopf algebras associated to the permutahedra and the associahedra. We introduce the notion of shuffle bialgebras, and compute the subpaces of primitive elements associated to these algebras. These spaces of primitive elements have natural structure of some type of algebras which we describe in terms of generators and relat...
متن کاملShuffle Bialgebras
The goal of our work is to study the spaces of primitive elements of the Hopf algebras associated to the permutaedra and the associaedra. We introduce the notion of shuffle and preshuffle bialgebras, and compute the subpaces of primitive elements associated to these algebras. These spaces of primitive elements are free objects for some types of algebras which we describe in terms of generators ...
متن کاملShuffle randomization
In a randomized clinical trial, study participants are assigned to various treatment arms through randomization. This random allocation of participants to treatment arms decreases bias and controls for numerous confounders (1). A common type of randomization is simple randomization, where each participant is randomly assigned to a treatment arm with a known (usually equal) probability, regardle...
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ژورنال
عنوان ژورنال: ACM Transactions on Storage
سال: 2015
ISSN: 1553-3077,1553-3093
DOI: 10.1145/2747878