Political scientist Corinna Jentzsch received an NWO Veni grant for her research on the conditions of collaboration between militias and state forces and its consequences for safety and political order.

In families where more than two people assume the role of parent, not all of these parents have legal status. This causes problems, particularly with inheritance law, says PhD candidate Michelle Michels.

How to strike a balance between the sometimes conflicting stakes of individual, public and private data-producers and data-processors?

In December 2024, the book Redressing Fundamental Rights Violations by the EU: The Promise of the ‘Complete System of Remedies', edited by Melanie Fink, was published fully open access with Cambridge University Press. The EU prides itself on having created a legal system that puts the individual at…

On 10 December 2024, the European Parliament played host to an insightful presentation of ‘Protecting Democracy in Europe: Pluralism, Autocracy, and the Future of the EU’, the new book by Tom Theuns, Assistant Professor at Leiden University. Hosted by MEP Thijs Reuten (PvdA/S&D) and his team, the event…

The Directorate-General for the Environment of the European Commission has granted the project entitled “Initiating A Public Dialogue on Environment Protection in the Context of the Transatlantic Trade and Investment Partnership (TTIP) Negotiations” to a consortium led by The Institute for European…

On 23 and 24 October, eLaw - Center for Law and Digital Technologies hosted the 2025 edition of Privacy Law Scholars Conference Europe at Leiden Law School. Over two days, participants discussed more than 40 work-in-progress papers, with materials available to participants ahead of time. The conference…

e-SIDES (ethical and societal impact of data sciences) is a Coordination & Support Action (CSA) part of the Horizon 2020 programme.

With tomography it is possible to reconstruct the interior of an object without destroying.

Companies like Facebook and Google make billions of dollars by selling or using our personal data. The data could be used by many different entities for many different reasons: from universities for research, to brands for creating targeted ads. But rather than just giving their data away to these companies…

Comparison across jurisdictions is one way of assessing the appropriateness of lethal force resulting from the actions of law enforcement agencies. This article sets out a vision for a global use of force monitor that can enable meaningful comparisons between law enforcement agencies. It examines some…

On 28 June 2024, Dr Kristof Gombeer spoke on State jurisdiction and the protection of people at sea at the 81st Biennial Conference of the International Law Association (ILA) in Athens, Greece.

In relational databases you can store information and data without losing the relationships between those data. They are therefore useful tools for computer scientists. There is, however, a gap between the relational database research community and data scientists. This leads to inefficient use of databases…

You have chosen to do a PhD track at Leiden University. What do you need to know when you start your project?

Movement behaviours, such as physical activity, sleep, and the amount of time we sit each day, impact our health. Recently, more researchers are looking at the influence of these behaviours combined, but this is a challenging task. For example, it is difficult to monitor in what way movement behaviours…

The Leiden-Delft-Erasmus Centre for BOLD Cities uses data research to help solve urban issues. Three interdisciplinary research projects will begin soon. Leiden sociologist John Boy explains.

As a bachelor student of Bio-Pharmaceutical Sciences, Femke Vlaswinkel wrote a research proposal she was allowed to carry out in her master’s BPS. Femke subsequently graduated with honors. Her research was published in the journal Scientific Reports, she won an award from the Dutch Pharmacy Society…

In this dissertation, we study partition-based models that can be used both for interpretable predictive modeling and for understanding data via interpretable patterns.

Prof.dr.ir. Wessel Kraaij is appointed director of the Data Science Research Programme (DSRP) at Leiden University, starting March 1st. He is the successor of prof.dr. Joost Kok, who recently exchanged Leiden for the position of dean in Twente.

Industrial sites are built for safety, but are they prepared for security breaches? As concerns grow over threats to national security, these sites are a target. The Securdomino project built a tool to prevent malicious attacks and rethinks how we define security.

The Leiden Institute of Advanced Computer Science (LIACS) received a grant award from NWO for a joint proposal with Centrum Wiskunde & Informatica (CWI, Amsterdam), Tata Steel (IJmuiden), BMW (Munich), and database company MonetDB. Within the NWO Data Science program ‘challenging big data‘, LIACS is…

The 2025 Data for Policy conference at Leiden University explored how digital and green transitions can shape a more sustainable and inclusive future.

With the aid of physics and a minuscule magnet, researchers have discovered a new structure of telomeric DNA. Telomeres are sometimes seen as the key to living longer. They protect genes from damage but get a bit shorter each time a cell divides. If they become too short, the cell dies. The new discovery…

Plant biologist Pingtao Ding, assistant professor at the Institute of Biology Leiden (IBL), has received a 2.4 million European grant from the European Research Council (ERC). This ERC Starting Grant for promising young researchers allows him to unravel the molecular mechanisms by which plants resist…

PhD students Alex Brandsen and Wouter Verschoof-van der Vaart are both doing a project within the university’s Data Science research programme. The are introducing terms like ‘text mining’ and ‘advanced machine learning’ into archaeology. ‘These techniques will make archaeology more efficient and ch…

Patients with the same illness often receive the same treatment, even if the cause of the illness is different for each person. This represents a new step towards ultimately being able to offer every patient more personalised treatment.

Depression and anxiety disorders among youth are causing major problems worldwide. The mechanisms involved are still unknown, however. Moji Aghajani – Assistant Professor at the Institute of Education and Child Studies - aims to provide new insights with his research

Children have the right to play and relax. Games, social media and video platforms are attractive new ways to do that. However, hardly any online games are designed specifically for children, nor do they factor in children's rights.

Ships are still emitting too much nitrogen oxide. Till now it has been impossible to measure this at sea, but that is set to change. Solomiia Kurchaba combined satellite data and developed algorithms to identify which ships are emitting too much. Kurchaba received her PhD on 11 June.

The Leiden Ranking – Open Edition is completely transparent. The ranking compiled by the CWTS uses open data and publishes the algorithms that are used.

On March 5, CWTS and the Leiden University Data Science Research Programme will organize the symposium ‘Fairness and Transparency, towards responsible data science’.

On 31 May, GTGC Chair Prof. Jan Aart Scholte, together with Carolina Aguerre and Malcolm Campbell-Verduyn, launched their book 'Global Digital Data Governance: Polycentric Perspectives' at the University of Groningen.

On 13 October 2023, Tuvana Aras, PhD Candidate at the Europa Institute and the International Institute of Air & Space Law, took part in the Second Max Planck Law Conference for Young European Scholars hosted by the Max Planck European Law Group in Frankfurt, Germany.

Fifty thousand euros in expert knowledge and the title Young eScientist 2019: the National eScience Symposium on 21 November was very successful for computer scientist Lise Stork. She will use the knowledge to develop an application to make historical biodiversity data directly available to research…

To conclude, this thesis provides valuable methodological insights to address data gaps and improve environmental impact assessments within the circular economy, with a particular focus on product reuse and sharing practices. Through empirical analysis and innovative approaches, it aims to support informed…

The Vallesian, 11.1-9 Ma, was a special time in the Vallès-Penedes basin near Barcelona, where a biodiversity hotspot existed. Europe had a subtropical climate, with rhinos, forest giraffes, lions, hyenas, flying squirrels and primates.

While investigating 16 years of images of young stars from a retired astronomical camera, Leiden master's student Sam de Regt discovered that two of those stars were still enveloped in birth clouds. Never before has anyone captured these two stars in so much detail. He publishes his data-cleaning method…

Influenza CD8(+) T-cell epitopes are conserved amongst influenza strains and can be recognized by influenza-specific cytotoxic T-cells (CTLs), which can rapidly clear infected cells. An influenza peptide vaccine that elicits these CTLs would therefore be an alternative to current influenza vaccines,…

Dr. Van Eijk will teach an advertising technology Masterclass for the Future of Privacy Forum (FPF) next week. It is the fourth session of the FPF & Brussels Privacy Hub's Digital Data Flows series. Van Eijk will be teaching alongside Adam Towvim (Brandeis International Business School) and moderated…

Saturday 13 February 2016 the daily newspaper Volkskrant published an article based on interviews with Professor Ronald Cramer and Harry Buhrman.

By far the majority of users of child sexual abuse networks (or child porn forums as they are sometimes called) on the dark web do not actively communicate there but download illegal material, therefore committing a criminal offence. But they often stay under the police and judiciary’s radar. PhD candidate…

In October 2019, OSCL organised a Hackathon on the ins and outs of MRI datasharing

Written by a select international group of leading privacy scholars, Social Dimensions of Privacy endorses and develops an innovative approach to privacy.

Astronomers at Leiden University have discovered the first planets using a new instrument: the planet hunter MASCARA. This instrument, developed at Leiden Observatory, looks specifically for planet transitions around the brightest stars in the sky, which surprisingly enough have so far have hardly been…

The universities of Delft, Leiden and Rotterdam are working together to show their students what artificial intelligence (AI) means for their own field. Three AI minors will start in the 2022 – 2023 academic year and will answer questions such as: ‘How best can you use AI in your research discipline?’…

On Wednesday morning, 14 March, Sander Dekker, Minister for Legal Protection, gave a guest lecture to the students of the Master Crisis and Security Management as part of the course Crisis Management. Dr. Sanneke Kuipers presented propositions based on theory to Minister Dekker. After each proposition,…