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- Institute for High Energy PhysicsES42 papers
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10 papers · 1 filter
Collective emotions online and their influence on community life
Anna Chmiel, Julian Sienkiewicz, Mike Thelwall +4
E-communities, social groups interacting online, have recently become an object of interdisciplinary research. As with face-to-face meetings, Internet exchanges may not only includ…
External bias in the model of isolation of communities
Julian Sienkiewicz, Grzegorz Siudem, Janusz A. Holyst
We extend a model of community isolation in the d-dimensional lattice onto the case with an imposed imbalance between birth rates of competing communities. We give analytical and n…
Flow of emotional messages in artificial social networks
Anna Chmiel, Janusz A. Holyst
Models of message flows in an artificial group of users communicating via the Internet are introduced and investigated using numerical simulations. We assumed that messages possess…
Scaling of internode distances in weighted complex networks
Julian Sienkiewicz, Janusz A. Holyst
We extend the previously observed scaling equation connecting the internode distances and nodes' degrees onto the case of weighted networks. We show that the scaling takes a simila…
Statistical properties of short term price trends in high frequency stock market data
Paweł Sieczka, Janusz A. Hołyst
We investigated distributions of short term price trends for high frequency stock market data. A number of trends as a function of their lengths was measured. We found that such a…
Growing Trees in Internet News Groups and Forums
Bernard Kujawski, Janusz A. Holyst, Geoff J. Rodgers
We present an empirical study of the networks created by users within internet news groups and forums and show that they organise themselves into scale-free trees. The structure of…