?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=https%3A%2F%2Fpublications.ut-capitole.fr%2Fid%2Feprint%2F50586%2F&rft.title=Social+influence+distorts+ratings+in+online+interfaces&rft.creator=Kontalexi%2C+Marina&rft.creator=Gelastopoulos%2C+Alexandros&rft.creator=Analytis%2C+Pantelis&rft.subject=B-+ECONOMIE+ET+FINANCE&rft.description=Theoretical+work+on+sequential+choice+and+large-scale+experiments+in+online+ranking+and+voting+systems+has+demonstrated+that+social+influence+can+have+a+drastic+impact+on+social+and+technological+systems.+Yet%2C+the+effect+of+social+influence+on+online+rating+systems+remains+understudied+and+the+few+existing+contributions+suggest+that+online+ratings+would+self-correct+given+enough+users.+Here%2C+we+propose+a+new+framework+for+studying+the+effect+of+social+influence+on+online+ratings.+We+start+from+the+assumption+that+people+are+influenced+linearly+by+the+observed+average+rating%2C+but+postulate+that+their+propensity+to+be+influenced+varies.+When+the+weight+people+assign+to+the+observed+average+depends+only+on+their+own+latent+rating%2C+the+resulting+system+is+linear%2C+but+the+long-term+rating+may+substantially+deviate+from+the+true+mean+rating.+When+the+weight+people+put+on+the+observed+average+depends+on+both+their+own+latent+rating+and+the+observed+average+rating%2C+the+resulting+system+is+non-linear%2C+and+may+support+multiple+equilibria%2C+suggesting+that+ratings+might+be+path-dependent+and+deviations+dramatic.+Our+results+highlight+potential+limitations+in+crowdsourced+information+aggregation+and+can+inform+the+design+of+more+robust+online+rating+systems.&rft.publisher=arXiv&rft.date=2025-02&rft.type=Monograph&rft.type=NonPeerReviewed&rft.identifier=++Kontalexi%2C+Marina%2C+Gelastopoulos%2C+Alexandros+%3Chttps%3A%2F%2Fwww.idref.fr%2F283720182%3E+and+Analytis%2C+Pantelis++(2025)+Social+influence+distorts+ratings+in+online+interfaces.++arXiv%2C+Toulouse+++++&rft.relation=http%3A%2F%2Ftse-fr.eu%2Fpub%2F130405&rft.language=en