activity
20092026
most citedSearching the Nodes of a Graph: Theory and Algorithms

8 citations · 14 across the 6 of their papers we have counts for

collaborators

7 papers

physics.soc-ph2026

Feedback dynamics in matching networks drive behavioral differentiation despite overlapping objectives

Alexandros Gelastopoulos

Many bipartite social networks exhibit pronounced asymmetries in selectivity and matching opportunities: members of one side can afford to be highly selective, while members of the…

cs.SI2025★ 2 cited

Social Influence Distorts Ratings in Online Interfaces

Marina Kontalexi, Alexandros Gelastopoulos, Pantelis P. Analytis

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 an…

physics.soc-ph2024★ 1 cited

The marginal majority effect: when social influence produces lock-in

Alexandros Gelastopoulos, Pantelis P. Analytis, Gaël Le Mens +1

People are influenced by the choices of others, a phenomenon observed across contexts in the social and behavioral sciences. Social influence can lock in an initial popularity adva…

math.PR2023

Inferring cumulative advantage from longitudinal records

Alexandros Gelastopoulos, Lucas Sage, Arnout van de Rijt

Inequality in human success may emerge through endogenous success-breeds-success dynamics but may also originate in pre-existing differences in talent. It is widely recognized that…

math.PR2019

Ranking-based rich-get-richer processes

Pantelis P. Analytis, Alexandros Gelastopoulos, Hrvoje Stojic

We study a discrete-time Markov process , for which the distribution of the future increments depends only on the relative ranking of its components (descending…

cs.AI2017★ 3 cited

Diversity of preferences can increase collective welfare in sequential exploration problems

Pantelis P. Analytis, Hrvoje Stojic, Alexandros Gelastopoulos +1

In search engines, online marketplaces and other human-computer interfaces large collectives of individuals sequentially interact with numerous alternatives of varying quality. In…