BIB-VERSION:: CS-TR-v2.0 ID:: STAN//CS-TR-88-1211 ENTRY:: April 24, 1995 ORGANIZATION:: Stanford University, Department of Computer Science TITLE:: Sublinear-Time Parallel Algorithms TYPE:: Technical Report AUTHOR:: Goldberg, A. V. AUTHOR:: Plotkin, S. A. AUTHOR:: Vaidya, P. M. DATE:: June 1988 PAGES:: 30 ABSTRACT:: This paper presents the first sublinear-time deterministic parallel algorithms for bipartite matching and several related problems, including maximal node-disjoint paths, depth-first search, and flows in zero-one networks. Our results are based on a better understanding of the combinatorial structure of the above problems, which leads to new algorithmic techniques. In particular, we show how to use maximal matching to extend, in parallel, a current set of node-disjoint paths and how to take advantage of the parallelism that arises when a large number of nodes are "active" during an execution of a push/relabel network flow algorithm. We also show how to apply our techniques to design parallel algorithms for the weighted versions of the above problems. In particular, we present sublinear-time deterministic parallel algorithms for finding a minimum-weight bipartite matching and for finding a minimum-cost flow in a network with zero-one capacities, if the weights are polynomially bounded integers. NOTES:: [Adminitrivia V1/Prg/19950424] END:: STAN//CS-TR-88-1211