Web Marshals Fighting Curly Link Farms

  • Fabrizio Luccio
  • Linda Pagli
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4475)


Graphides cincinnatae (also known as circulant graphs) Ci n (L) of n vertices are studied here as link farms in the Web, built automatically by a spammer to promote visibility of a page T. These graphs are k-consecutive, denoted by Cin,k, if each vertex v i is connected to vi + j and vi − j with j = 1,2,...,k. Graphides cirratae are cincinnatae with some irregularities. We discuss how to fight this phenomenon with a set of Web marshals, that is autonomous agents that visit the farm for cutting the links to T. The farm reacts reconstructing the links through majority voting among its pages. We prove upper and lower bounds on the number of marshals, and of link hops, needed to dismantle the farm. We consider both synchronous and asynchronous operations.

Regular Keywords: Circulant graph, Web graph, Page-rank, Web spam, Link farm, Autonomous agent, Majority rule.

Elegant Keywords: Graphis cincinnata, Graphis cirrata, Curly graph, Web marshal.


Mobile Agent Majority Rule Autonomous Agent Great Element Vertex Degree 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Berlin Heidelberg 2007

Authors and Affiliations

  • Fabrizio Luccio
    • 1
  • Linda Pagli
    • 1
  1. 1.Dipartimento di Informatica, Università di PisaItaly

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