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For a given graph G(V,E) and a given vector (......) the problem of finding a hyperplane which separates x form the polyhedron P of the matching matroid on G or proving that x belongs to P is solved by finding a minimum capacity cut on an auxiliary digraph ...
We present a simple constructive heuristic for the optimal enclosed area polygon problem. Namely, given a finite set S of points in the plane, we look for the simple polygon with vertex set S having minimal, respectively maximal, enclosed area. ...
Let G=(V,E) be connected undirected graph and N a subset of distinguished nodes, called terminals. A Steiner tree on [G,N] is a minimal tree connecting all the terminal nodes. Restricting the instances to the case /N/=/N/-1, we present an algorithm to cons ...
We present O(log log n)-round algorithms in the Massively Parallel Computation (MPC) model, with a(n) memory per machine, that compute a maximal independent set, a 1 + epsilon approximation of maximum matching, and a 2 + epsilon approximation of minimum ve ...
The motivation to this research is the study of the optimal stopping problem for multiparameter processes : given a random process depending on finitely many parameters t = (t1,…,tn), which if stopped at point t in the parameter set produces a reward Xt, w ...
The success of the P2P idea has created a huge diversity of approaches, among which overlay networks, for example, Gnutella, Kazaa, Chord, Pastry, Tapestry, P-Grid, or DKS, have received specificc attention from both developers and researchers. A wide vari ...
Formation building and keeping among vehicles has been studied for many years, since 1987 with Reynolds' rules [1]. This paper presents a control algorithm, based on recent work in graph theory, able to reconfigure static formations of non-holonomic vehicl ...
The fine structures of multiplets in 2-dimensional correlation spectra arise from coherence transfer processes that can be rationalized in terms of connectivity diagrams. These can be derived from conventional energy-level diagrams, which in turn reflect t ...