Replicators don't. Replicate, that is. This is the shocking conclusion to which I have been forced by my attempt to gure out what precisely Richard Dawkins means by the term \replicator". Actually, it seems that Dawkins uses the term in at least two fundamentally diierent ways; but according to Dawkins' own speciication of the problem which the \replicator" concept was intended to solve (namely...

The provenance, or lineage, of a workflow data product can be reconstructed by keeping a complete trace of one workflow execution. This lineage information, however, is likely to be both imprecise, because of the black-box nature of the services that compose the workflow, and noisy, because of the many trivial data transformations that obscure the intended purpose of the workflow. In this paper...

We consider a directed random walk on the backbone of the infinite cluster generated by supercritical oriented percolation, or equivalently the space-time embedding of the “ancestral lineage” of an individual in the stationary discrete-time contact process. We prove a law of large numbers and an annealed central limit theorem (i.e., averaged over the realisations of the cluster) using a regener...