Search results for "SMALL-WORLD NETWORKS"

showing 2 items of 2 documents

A tool for filtering information in complex systems

2005

We introduce a technique to filter out complex data-sets by extracting a subgraph of representative links. Such a filtering can be tuned up to any desired level by controlling the genus of the resulting graph. We show that this technique is especially suitable for correlation based graphs giving filtered graphs which preserve the hierarchical organization of the minimum spanning tree but containing a larger amount of information in their internal structure. In particular in the case of planar filtered graphs (genus equal to 0) triangular loops and 4 element cliques are formed. The application of this filtering procedure to 100 stocks in the USA equity markets shows that such loops and cliqu…

Physics - Physics and SocietyComputer scienceComplex systemFOS: Physical sciencesPhysics and Society (physics.soc-ph)Minimum spanning treecomputer.software_genrePlanarHierarchical organizationINTERNETCondensed Matter - Statistical MechanicsComplex data typeMultidisciplinarySmall-world networkStatistical Mechanics (cond-mat.stat-mech)SMALL-WORLD NETWORKSFilter (signal processing)Disordered Systems and Neural Networks (cond-mat.dis-nn)Condensed Matter - Disordered Systems and Neural NetworksComplex networkWEBDYNAMIC ASSET TREESPhysical SciencesGRAPHData miningAlgorithmcomputerMathematicsofComputing_DISCRETEMATHEMATICS
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Come è piccolo il mondo in rete: una ipotesi small-world sulla topologia di Facebook

2009

In questo lavoro viene presentata una prima ipotesi di modellizzazione della struttura comunicativa e sociale di Facebook a partire dalle risposte fornite da un totale di 1001 utenti Facebook ad un questionario di self-report 1 appositamente predisposto. Oltre a fornire una serie di elementi sui meccanismi cognitivi, comunicativi e sociali nonché sulle motivazioni all’uso di Facebook, i suddetti dati hanno offerto la possibilità di verificare se la struttura topologica di Facebook può essere assimilabile ad una rete small-world.

Settore M-PSI/01 - Psicologia GeneraleSettore INF/01 - Informaticasocial web Facebook small-world networks
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