Data Science & AI student Nataliia Bagan combines a passion for mathematics, language, and artificial intelligence. Her exceptional bachelor’s thesis on improving reasoning in large language models earned her a nomination for the Leiden Science Young Talent Award 2025.

Conference, Spring workshop

The Open University and Leiden University will join forces to offer a (Dutch-taught) Joint Legal Technologies Program for professionals. In doing so, they can provide the advanced legal informatics training that is necessary in our rapidly digitising society. The joint program is a further development…

In an open letter, 450 leading European researchers from 33 countries have urged European and national governments to strongly cooperate on artificial intelligence , regardless of the Brexit. Leiden professor Holger Hoos is one of the initiators.

For some years, large tech companies have breached copyright law by using creative expressions from artists to train AI tools. Dirk Visser, Professor of Intellectual Property Law, spoke to ‘Financieele Dagblad’: 'Artists may lose the motivation to create new art.'

Reijer Passchier, universitair docent Staatrecht in Leiden en hoogleraar Digitalisering en de democratische rechtsstaat aan de Open Universiteit, pleit voor de ontwikkeling van europese techbedrijven, waarbij europa zijn soevereiniteit weet te behouden. Hij waarschuwt vooral niet het ‘destructieve gigantisme-model…

Bart Custers was appointed Professor of Law and Data Science on the first of July. This makes him the first professor to be appointed for the SAILS program. SAILS is a university-wide initiative that focuses on broadening and deepening research into artificial intelligence. In addition, SAILS will focus…

Willemijn Aerdts, lecturer at ISGA, discussed the Russian interference in the domestic affairs of Western countries on Dutch radio BNR.

Each month we will be spotlighting material we have been reading, or that have been recommended to us that relate to AI and a particular theme.

How can we organise society so as to keep our planet habitable for us and for all other life forms around us? To answer this question, Leiden researchers collaborate across disciplines, from biology to data science, and from environmental economy to archaeology.

In this first ever podcast from LUCIS, hosts Yasmin Ismail & Sara Bolghiran explore what it means to imagine Muslim futures. Over 6 episodes we explore questions around what it means to imagine, the politics of imagination and what it would mean to engage with Muslims from the perspective of futures…

With cancer, a person’s body cells grow uncontrollably. Putting together a detailed picture of how this comes about makes it possible to develop efficient therapies. Researchers at the Leiden University Medical Centre (LUMC) and Leiden University are working together to gain a better understanding…

Science Internship Fair, a Fair for students and companies to meet up for internships. Matching to find the right student for the right internship. Company information page for this event at LIACS.

On Monday June 29, three students of the Creative Intelligence & Technology MSc program will present their graduation thesis research. In 20-25 minutes they present their project, followed by 10-15 minutes public discussion. Everyone is invited to attend. The presentations are in English.

Paul Abels' book 'Spionkoppen' (Spy heads) was recently published; He wrote the book together with students Marijn Adams and David Mendelsohn. In his book, Abels describes the AIVD (Dutch General Intelligence and Security Service), where he himself worked for several decades, based on his superiors.

Tracks Inspector, a Dutch company that develops innovative software, commissioned research to eLaw to investigate the use of cyber agent technology for intelligence agencies and secret services.

Benoeming Willemijn Aerdts tot lid permanente commissie Vrede en Veiligheid

Willemijn Aerdts, lecturer at ISGA discusses the warning issued by the MIVD (Dutch Military Intelligence and Security Service) to put away your phone when discussing sensitive or private matters.

Lecture

Lecture

High-quality education, research involving multiple faculties, collaboration between universities and central government funding to make all this possible: these were the topics covered in a working visit of the Standing Committee for Education, Culture and Science (OCW) to the Association of Universities…

The law and Artificial Intelligence (AI) applications need to be better aligned to ensure our personal data and privacy are protected. PhD candidate Andreas Häuselmann can see opportunities with AI, but dangers if this does not happen.

Eduard Fosch-Villaronga from Leiden University has been awarded a Starting Grant by the European Research Council (ERC). This grant of 1.5m euros enables talented early-career scholars to start their own pioneer project, lead a research team, and implement their best ideas at the frontiers of their…

Ben de Jong and Paul Abels, both working for ISGA, discuss the Russian claim that espionage equipment was found in Dutch newspaper Algemeen Dagblad (AD). According to the Russians the equipment was found in one of the cars used by their diplomats in The Hague.

During the second Arthur Docters van Leeuwen Lecture on 2 December, AIVD Director Erik Akerboom underlined how the changing threat landscape demands reflective leadership, transparency where possible and close cooperation to protect the democratic legal order.

Last week, the first seven professionals successfully completed the new Leiden Legal Technologies Programme (LLTP). They received their certificates during a festive ceremony. Smiling faces all around for founder Jaap van den Herik, Programme Director Nikol Hopman, and The Hague alderman Saskia Bruines.…

AI, data and algorithms are developing at breakneck speed, while legislation inevitably lags behind. But laws and regulations are essential – look no further than the Dutch childcare benefits scandal.

Digitalisering ondermijnt de democratische rechtsstaat en verschuift macht van parlementen naar Silicon Valley, waarschuwt Reijer Passchier, hoogleraar digitalisering en beginselen van de democratische rechtstaat (OU) en docent staatsrecht in Leiden, in een podcast van de Publieke Ruimte.

The Data-Driven Drug Discovery Network (D4N) is an initiative by researchers from Leiden University and collaborators to join efforts in applying and developing novel techniques from data science to drug discovery and related topics from bioinformatics.

Which brain cell does what, when Parkinson's disease arises? It won't be long before this jigsaw is solved piece by piece. Ahmed Mahfouz, computational biologist, combines bio-knowledge from Leiden with algorithms from Delft and is getting closer to finding the key.

Our institute has a large and thriving community of PhD researchers engaged in a variety of domains representing the main research areas of the Institute: cybersecurity, terrorism, physical violence, crisis management, intelligence, diplomacy and global affairs, policing studies, and war, peace and…

Labour is back as a significant social and political force in Indonesia, as was shown in the recent 1 May trade union demonstrations in Jakarta. Over the past years major changes have taken place in Indonesian labour law, leading to new forms of judicial and political resolution of labour disputes.

Lyndsey Housden teaches in the Interactive/Media/Design department at the Royal Academy of Art (KABK), The Hague. She is a researcher and artist, working with interactive and haptic installations, spatial design and interdisciplinary projects for exhibitions, theatre, and festivals.

The quest for Trustworthy AI is high on both the political and the research agenda, and it actually constitutes TAILOR’s first research objective (H1) of developing the foundations for Trustworthy AI. It is concerned with designing and developing AI systems that incorporate the safeguards that make…

The LACDR represents the core of bio-pharmaceutical research at Leiden University, and we interact closely with our partners:

The Academy of Creative and Performing Arts (ACPA) of Leiden University and Art Institute West Den Haag are pleased to announce their close collaboration in the second season of the public series In the Making. This series, dedicated to the practice of research in the arts, will consist of seven public…

In the Master's programme Crisis and Security Management, you will study contemporary security challenges from both local and global points of view, gaining a deep understanding of the ‘wicked problem’ of security and crisis topics in a complex and globalising world.

Do you want to know the best reasons to study at Leiden University or want to know what's it like to live in the student cities Leiden or The Hague? Our students tell you why you have to choose Leiden University to study your bachelor's programme.

In the Master's programme Crisis and Security Management, you will study contemporary security challenges from both local and global points of view, gaining a deep understanding of the ‘wicked problem’ of security and crisis topics in a complex and globalising world.

Our research projects address cutting-edge and forward-looking societal challenges at the intersection of law and technology.

Most people know what law is. But what it should be or where it comes from is what interests the researchers from the Institute for the Interdisciplinary Study of the Law. Key to their approach are topics that go right to the heart of philosophy of law. What is a state? What are the limitations of…

We welcome visiting scholars whose research aligns with our diverse areas of expertise.

Research in this group, headed by Gerard van Westen, focusses on computational methods integrated in different parts of the drug discovery process. More specifically, topics include innovative treatments for cancer, selectivity modeling, translational research, allosteric modulation, drug resistance…

Persistent somatic symptoms are long term symptoms that lack a clear medical explanation. These symptoms have a high prevalence where most people know someone who experiences such symptoms or they experience such symptoms themselves. Symptoms can vary greatly in and between people. While one person…

The seminar series on ‘Diversity and Inclusion in Global Science’ aims to foster debate on inequalities in science across the world.

NL-BioImaging AM is a distributed research infrastructure aimed at promoting progress in the most cutting edge microscopy technologies and providing open access to these technologies to a broad community of academic and industrial users. All Netherlands bio(medical) microscopy centers participate.

The Open Science Lab bundles expertise on Open Science at CWTS and contributes to and studies the transition towards Open Science at CWTS, Leiden University, and beyond. It serves as a knowledge broker, facilitator, and platform for learning and exchange.

Sexuality is a fundamental part of being human. Yet, for many people with disabilities, it remains overlooked, unsupported, and surrounded by stigma. NWO-VIDI Sex, Care & Robots confronts that long-standing neglect with a project that envisions an urgent yet straightforward future: one in which sexual…

This project seeks to integrate scientific research and practical knowledge in the study of the mechanisms that make dialogue an effective tool for communication, teaching, and thinking.