activity
20162026
most citedUncovering Offshore Financial Centers: Conduits and Sinks in the Global Corporate Ownership Network

344 citations · 441 across the 27 of their papers we have counts for

collaborators

28 papers

cs.SI2026

MARS: A framework for modelling register-based social networks

Katherine Hamilton, Irina Epure, Frank Takes

Register-based social networks have become of increasing interest in countries where formal government-curated microdata is available. Due to the non-trivial generative process of…

cs.SI2026

Probabilistic Salary Prediction with Graph Attention Networks and a Mixture Density Network

Zhipei Qin, Mohammad Shokri, N. van Weeren +1

Accurate salary prediction is critical for bridging the information gap between employers and job seekers in modern labor markets. Existing approaches predominantly yield a single…

cs.SI2026

Fuzzy k-anonymity in complex networks

Rachel G. de Jong, Mark P. J. van der Loo, Frank W. Takes

With the introduction of large-scale network data, including population-scale social networks, techniques for privacy-aware sharing of network data become increasingly important. W…

cs.SI2026

Individual Fairness in Community Detection: Quantitative Measure and Comparative Evaluation

Fabrizio Corriera, Frank W. Takes, Akrati Saxena

Community detection is a fundamental task in complex network analysis. Fairness-aware community detection seeks to prevent biased node partitions, typically framed in terms of indi…

physics.soc-ph2026

Fragmentation of a longitudinal population-scale social network: Decreasing structural social cohesion in the Netherlands

Eszter Bokányi, Yuliia Kazmina, Eelke M. Heemskerk +1

Population-level dynamics of social cohesion and its underlying mechanisms remain difficult to study. In this paper, we propose a network approach to measure the evolution of socia…

cs.SI2026

Link Fraction Mixed Membership Reveals Community Diversity in Aggregated Social Networks

Gamal Adel, Eszter Bokányi, Eelke M. Heemskerk +1

Community detection is a critical tool for understanding the mesoscopic structure of large-scale networks. However, when applied to aggregated or coarse-grained social networks, di…

physics.soc-ph2025

Can social capital remedy structural inequality? Economic mobility in a longitudinal population-scale social network

Yuliia Kazmina, Eelke M. Heemskerk, Emilia van der Kooij +2

The promise of equal opportunity is a cornerstone of modern societies, yet upward economic mobility remains out of reach for many. Using a decade of population-scale social network…

cs.DL2025

Freshness, Persistence and Success of Scientific Teams

Hanjo D. Boekhout, Eelke M. Heemskerk, Niccolò Pisani +1

Team science dominates scientific knowledge production, but what makes academic teams successful? Using temporal data on 25.2 million publications and 31.8 million authors, we prop…

cs.CV2025

Ecological Legacies of Pre-Columbian Settlements Evident in Palm Clusters of Neotropical Mountain Forests

Sebastian Fajardo, Sina Mohammadi, Jonas Gregorio de Souza +13

Ancient populations inhabited and transformed neotropical forests, yet the spatial extent of their ecological influence remains underexplored at high resolution. Here we present a…

cs.SI2025

Quantifying Group Fairness in Community Detection

Elze de Vink, Frank W. Takes, Akrati Saxena

Understanding community structures is crucial for analyzing networks, as nodes join communities that collectively shape large-scale networks. In real-world settings, the formation…

cs.SI2025★ 1 cited

Utility-aware Social Network Anonymization using Genetic Algorithms

Samuel Bonello, Rachel G. de Jong, Thomas H. W. Bäck +1

Social networks may contain privacy-sensitive information about individuals. The objective of the network anonymization problem is to alter a given social network dataset such that…

cs.SI2024

Fast maximal clique enumeration in weighted temporal networks

Hanjo D. Boekhout, Frank W. Takes

Cliques, groups of fully connected nodes in a network, are often used to study group dynamics of complex systems. In real-world settings, group dynamics often have a temporal compo…

physics.soc-ph2024★ 1 cited

The relevance of higher-order ties

Alberto Ceria, Frank W. Takes

Higher-order networks effectively represent complex systems with group interactions. Existing methods usually overlook the relative contribution of group interactions (hyperlinks)…

cs.SI2024

The anonymization problem in social networks

Rachel G. de Jong, Mark P. J. van der Loo, Frank W. Takes

This paper introduces a unified computational framework for the anonymization problem in social networks, where the objective is to maximize node anonymity through graph alteration…

physics.soc-ph2024

From Contact to Threat: A Social Network Perspective on Perceptions of Immigration

Yuliia Kazmina, Eelke M. Heemskerk, Eszter Bokányi +1

Our perceptions are shaped by the social networks we are embedded in. Despite the acknowledged influence of close contacts on how we perceive the world, the role of the broader soc…

cs.SI2024

A systematic comparison of measures for publishing k-anonymous social network data

Rachel G. de Jong, Mark P. J. van der Loo, Frank W. Takes

Sharing or publishing social network data while accounting for privacy of individuals is a difficult task due to the interconnectedness of nodes in networks. A key question in k-an…

physics.soc-ph2024★ 3 cited

Connectivity and Community Structure of Online and Register-based Social Networks

Márton Menyhért, Eszter Bokányi, Rense Corten +3

The dominance of online social media data as a source of population-scale social network studies has recently been challenged by networks constructed from government-curated regist…

cs.SI2023

A large-scale longitudinal structured dataset of the dark web cryptomarket Evolution (2014-2015)

Hanjo D. Boekhout, Arjan A. Blokland, Frank W. Takes

Dark Web Marketplaces (DWM) facilitate the online trade of illicit goods. Due to the illicit nature of these marketplaces, quality datasets are scarce and difficult to produce. The…

cs.SI2023

Early warning signals for predicting cryptomarket vendor success using dark net forum networks

Hanjo D. Boekhout, Arjan A. J. Blokland, Frank W. Takes

In this work we focus on identifying key players in dark net cryptomarkets that facilitate online trade of illegal goods. Law enforcement aims to disrupt criminal activity conducte…

cs.SI2023★ 1 cited

The effect of distant connections on node anonymity in complex networks

Rachel G. de Jong, Mark P. J. van der Loo, Frank W. Takes

Ensuring privacy of individuals is of paramount importance to social network analysis research. Previous work assessed anonymity in a network based on the non-uniqueness of a node'…

physics.soc-ph2023★ 1 cited

Socio-economic Segregation in a Population-Scale Social Network

Yuliia Kazmina, Eelke M. Heemskerk, Eszter Bokanyi +1

We propose a social network-aware approach to studying socio-economic segregation. The key question that we address is whether patterns of segregation are more pronounced in social…

physics.soc-ph2022★ 3 cited

The anatomy of a population-scale social network

Eszter Bokányi, Eelke M. Heemskerk, Frank W. Takes

Large-scale human social network structure is typically inferred from digital trace samples of online social media platforms or mobile communication data. Instead, here we investig…

cs.CE2022★ 11 cited

Modelling and measuring complexity of traditional and ancient technologies using Petri nets

Sebastian Fajardo, Jetty Kleijn, Frank W. Takes +1

Technologies and their production systems are used by archaeologists and anthropologists to study complexity of sociotechnical systems. However, there are several issues that hampe…

econ.GN2022★ 2 cited

Holding Periods: Measuring the Inverse of Money Velocity from Transaction Records

Carolina E. S. Mattsson, Allison Luedtke, Frank W. Takes

This paper defines the average holding period of money and proposes a methodology for fully disaggregated measurement. Our measure is shown to be the inverse of the transfer veloci…