Show simple item record

dc.contributor.authorBrova, Georgeen_US
dc.date.accessioned2015-06-24T19:48:47Z
dc.date.available2015-06-24T19:48:47Z
dc.date.issued2012-05-09
dc.identifier.citationBrova, George. "Peer and Authority Pressure in Information-Propagation Models (MA Thesis)", Technical Report BUCS-TR-2012-010, Computer Science Department, Boston University, May 9, 2012. [Available from: http://hdl.handle.net/2144/11398]
dc.identifier.urihttps://hdl.handle.net/2144/11398
dc.description.abstractExisting models of information diffusion assume that peer influence is the main reason of the observed propagation patterns. This work examines the role of authority pressure on the observed information cascades. We model this intuition by characterizing some nodes in the network as “authority” nodes. These are nodes that can influence large number of peers, while themselves cannot be influenced by peers. We propose a model that associates with every item two parameters that quantify the impact of peer and the authority pressure on the item’s propagation. Given a network and the observed diffusion patterns of the item, we learn these parameters from the data and characterize the item as peer- or authority-propagated. We also develop a randomization test that evaluates the statistical significance of our findings and makes our item characterization robust to noise. Our experiments with real data from online media and scientific-collaboration networks indicate that there is a strong signal of authority pressure in these networks.en_US
dc.language.isoen_US
dc.publisherComputer Science Department, Boston Universityen_US
dc.relationhttp://hdl.handle.net/2144/12297
dc.relation.ispartofseriesBUCS Technical Reports;BUCS-TR-2012-010
dc.titlePeer and authority pressure in information-propagation models (MA thesis)en_US
dc.typeTechnical Reporten_US
dc.typeThesis/Dissertationen_US
etd.degree.nameMaster of Artsen_US
etd.degree.levelmastersen_US
etd.degree.disciplineComputer Scienceen_US
etd.degree.grantorBoston Universityen_US
dc.relation.isnodouble12652


This item appears in the following Collection(s)

Show simple item record