This thesis develops statistical methods for the analysis of high dimensional data: high dimensional networks reconstruction (Chapters 1-4), incorporation of prior information in networks reconstruction (Chapters 2-4), incorporation of prior knowledge in genetic association studies (Chapter 3).

Valérie Pattyn, Assistant Professor at Leiden University, researched

Humanities, Institute for Area Studies, Chinese Studies

After an initial suggestion of a move toward Israel, India’s Prime Minister Modi has signaled a significant recalibration of his government’s engagement with the Middle East region. Now, India seems to be prioritising strong ties with the Gulf states.

This paper develops a novel theoretical framework for the conduct of postmortems after major foreign policy surprises for the European Union and its member states.

Today, humanity produces sufficient calories, in theory, to feed the 7.7 billion people on the planet: the amount of food produced per person on the planet has gone up more than 40% since the 1960s. Yet, ironically, the prevalence of undernourishment – which had been declining for decades – has started…

He announced this news in a tweet earlier this month: 'Delighted to announce that I've been appointed Full Professor of Global Security and Technology'. So let's get more closely acquainted with Dennis Broeders (46), who explains why the Institute of Security and Global Affairs (ISGA) is ideal for him,…

On behalf of the interdisciplinary programme Social Resilience & Security, we would like to remind you of the call for proposals for seed funding (up to €4.000) to boost interdisciplinary research.

As part of the Paris Agreement, countries across the world agreed to support developing countries to invest in climate mitigation and adaptation through a Green Climate Fund. However, developed countries have failed to meet funding commitments for the Green Climate Fund–the flagship program financing…

Researchers of the Leiden Leadership Centre are active members of the PUPOL network. PUPOL is an international academic network for public and political leadership which fosters exchange of ideas and inspires collaborative research among scholars focusing on the role of leadership in the public and…

This project develops methods for ensuring the anonymity of individuals in social network data.

A research data infrastructure in computational social science

This project aims to situate the current policy concept of ‘valorization of scientific knowledge’ in historical and epistemological perspectives. Conceptual understanding of the utility of scientific practices is developed in dialogue with historical analyses of the politics of knowledge in European…

We study the structure, dynamics and physics of complex networks emerging from the intricate interconnectedness of the constituents of large systems.

2 joint initiatives began in 2019 which attempt to connect the various efforts around active learning at Leiden University: the active learning network, and the Saltswat project.

This research paper was requested by the European Parliament's Committee on Civil Liberties, Justice and Home Affairs. It was published by the International Centre for Counter-Terrorism (ICCT) in The Hague. Leiden University is one of the participating institutes in this publication and our researcher…

Career Event

Dementia is a progressive disease, diagnosed at a relatively late stage when intervention may not be effective. Aim of the research is to study scans of brain networks to help discover the early network changes related to dementia. Early diagnosis may benefit effectiveness of future treatment.

Promotor: H.J. van den Herik, B.R. Katzy, Co-promotor: K. Sailer

A Diachronic Perspective on the Aegean

Great apes and the right to health

The amended Intelligence and Security Services Act (WiV) enacts a fundamental change in the relationship between the security services and politics. This carries the risk of politicisation of information, according to Professor Paul Abels. Inaugural lecture on 16 February.

Promotor: F. Arbab, R. De Nicola, Co-Promotor: M. Tribastone

Thanks to data science, we can chart and search enormous quantities of related information. This generates all kinds of new insights, for example in complex global financial structures or such societal problems as loneliness.

Development of scenarios for 2050 detailed in an IO framework

This project will explore how Chinese digital networks are grounded in real-world institutions, and how interest groups and individuals use digital infrastructures to shape public discourse on national history.

This thesis describes the design, characterization and application of dextran based crosslinked network.

On 24 October 2018, the European Competition and Regulatory Law Review (CoRe), the Computer and Communications Industry Association (CCIA) and the Vrije Universiteit Brussel jointly organized the second “Competition Policy and Online Markets” conference in Brussels.

Promotor: E.F.A. Deprettere, Co-Promotor: A.C.J. Kienhuis

On Tuesday 10 January 2023, former master’s students in Child Law – Fien Bouwmeester, Renee Muller, Imaani Stegeman, Demi Onclin and Rosa Passchier – held presentations on their master’s theses at the Dutch Ministry of Justice and Security.

Development of indicators to assess decoupling of economic development and environmental pressure in the EU-25 and AC-3 countries.

In this project, we use social network analysis to analyze the behavior of users in online forums and associated marketplaces over time.

Citizens’s attitudes towards trade are not only about the (perceived) economic effect. Commerce also has a variety of security implications. Employing an original experiment, political scientists Matthew DiGiuseppe (Leiden University) and Katja Kleinberg (Binghamton University) demonstrate that security…

How we think about and act on the usefulness of scientific research has epistemological and political implications: what knowledge consists of, how it comes about and to what ends. In this dissertation, I situate the usefulness of scientific research in concrete places for knowledge exchange. The exchange…

EUMOTIONS explores the role of emotions expressed by political elites (at EU- and member state-level) in framing the EU’s policy options during international crises.

Gendered dynamics and assumptions are prevalent throughout the field of cybersecurity.

Think tanks have proliferated in most Western democracies over the past three decades and are often considered to be increasingly important actors in public policy. Still, their precise contribution to public policy remains contested.

On Thursday 19 October, the Crisis and Security Management programme welcomed back six alumni for an alumni panel.

YAL raises its voice on policy matters.

The United Nations (UN) made history in October 2000 when Resolution 1325 on Women, Peace, and Security (WPS) was unanimously adopted.

European countries struggling how to deal with the issue of returning foreign fighters, women and children from the Caliphate.

This paper aims to understand the most common underlying problems causing strategic surprise in the context of the European Union.