The evolution of molecular quasispecies on two diierent complex tness landscapes, the Sherrington Kirkpatrick spin glass and the Graph Bipartitioning landscape, is investigated in dependence on replication delity and population size. Three diierent regimes of replication delity are detected. At high copying delity one obtains a population with high mean tness localized around a time independent...

Simultaneous tracking and formation control is addressed for a team of autonomous agents that evolve dynamically in a space containing a measurable vector field. Each agent measures the local value of the field along its trajectory and occasionally shares relevant information with other agents, in order to estimate the spatial average obtained from averaging measurements across all agents. Usin...

in this paper, the optimal adaptive leader-follower consensus of linear continuous time multi-agent systems is considered. the error dynamics of each player depends on its neighbors’ information. detailed analysis of online optimal leader-follower consensus under known and unknown dynamics is presented. the introduced reinforcement learning-based algorithms learn online the approximate solution...

The ∆-timed uniform consensus is a stronger variant of the traditional consensus and it satisfies the following additional property: Every correct process terminates its execution within a constant time ∆ (∆-timeliness), and no two processes decide differently (Uniformity). In this paper, we consider the ∆-timed uniform consensus problem in presence of fc crash processes and ft timing-faulty pr...

We give a simple and intuitive proof of an f + 2 round lower bound for uniform consensus. That is, we show that for every uniform consensus algorithm tolerating t failures, and for every f t − 2, there is an execution with f failures that requires f + 2 rounds.  2002 Elsevier Science B.V. All rights reserved.

Research on human reasoning is dominated by demonstrations of the errors people make in various judgment and decision-making tasks. The area of social cognition is not an exception: the list of apparent errors is long and includes a number of contradictory phenomena. Here we explore a prominent example of the contradictory pairs of biases: false consensus and false uniqueness. We show in an emp...