Béla Bollobás, Oliver Riordan (auth.), Stefano Leonardi's Algorithms and Models for the Web-Graph: Third International PDF

By Béla Bollobás, Oliver Riordan (auth.), Stefano Leonardi (eds.)

ISBN-10: 3540234276

ISBN-13: 9783540234272

ISBN-10: 3540302166

ISBN-13: 9783540302162

This quantity includes the 14 contributed papers and the contribution of the celebrated invited speaker B´ ela Bollob´ as offered on the third Workshop on Algorithms and versions for the Web-Graph (WAW 2004), held in Rome, Italy, October sixteen, 2004, along with the forty fifth Annual IEEE Symposium on Foundations of machine technological know-how (FOCS 2004). the realm huge net has develop into a part of our daily life and knowledge retrievalanddataminingontheWebisnowofenormouspracticalinterest.Some of the algorithms assisting those actions are dependent considerably on viewing the internet as a graph, precipitated in a variety of methods by means of hyperlinks between pages, hyperlinks between hosts, or different related networks. Theaimofthe2004WorkshoponAlgorithmsandModelsfortheWeb-Graph was once to additional the certainty of those Web-induced graphs, and stimulate the advance of high-performance algorithms and functions that use the graphstructureoftheWeb.Theworkshopwasmeantbothtofosteranexchange of principles one of the varied set of researchers already occupied with this subject, and to behave as an advent for the bigger group to the cutting-edge during this quarter. This used to be the 3rd variation of a really profitable workshop in this subject, WAW 2002 was once held in Vancouver, Canada, along side the forty third - nual IEEE Symposium on Foundations of machine technology, FOCS 2002, and WAW 2003 used to be held in Budapest, Hungary, along with the twelfth Int- nationwide world-wide-web convention, WWW 2003. This was once the ?rst variation of the workshop with formal proceedings.

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Extra resources for Algorithms and Models for the Web-Graph: Third International Workshop, WAW 2004, Rome, Italy, October 16, 2004, Proceeedings

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Andersen et al. of short edge-disjoint paths between the vertices, where short means having length at most Another approach is to consider the minimum size of a set of edges whose removal leaves no short path between the vertices. When we restrict to short paths, the analogous version of the max-flow min-cut theorem does not hold, and in fact and can be different by a factor of ([2]). However we still have the trivial relations Both of the above notions of local connectivity are difficult to compute, and in fact computing the maximum number of short disjoint paths is if [9].

However a draconian version of this heuristic can be analysed. The following algorithm takes as input an additional integer parameter Algorithm 3. Before the first step of the algorithm the graph consists of a single isolated vertex and After is created and connected to neighbours, let Z be the set of all neighbours of in of degree km + 1. If then all vertices in Z are added to Otherwise if is not dominated by some element of then a vertex of maximum degree in is added to the dominating set. Notice that after each is generated and connected to all vertices whose degree has become larger than km are moved inside The analysis of the evolution of is based again on the definition of a random process that describes the algorithm dynamics and on the proof that such process behaves in a predictable way for large Let For each and define in is the set of vertices of degree before is added to the graph.

Konemann, Faster and simpler algorithms for multicommodity flow and other fractional packing problems. Technical Report, Max-Planck-Institut fur Informatik, Saarbrucken, Germany (1997). 9. A. Itai, Y. Perl, and Y. Shiloach, The complexity of finding maximum disjoint paths with length constraints, Networks 12 (1982) 10. J. Kleinberg, The small-world phenomenon: An algorithmic perspective, Proc. 32nd ACM Symposium on Theory of Computing, 2000. 11. S. Milgram, The small world problem, Psychology Today, 2 (1967), 60-67.

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Algorithms and Models for the Web-Graph: Third International Workshop, WAW 2004, Rome, Italy, October 16, 2004, Proceeedings by Béla Bollobás, Oliver Riordan (auth.), Stefano Leonardi (eds.)

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