Hoe kan de City Deal Kennis Maken bijdragen aan het formuleren van maatschappelijk relevant onderzoek dat de stad in al haar diversiteit centraal stelt? In de stad Leiden zijn burgers momenteel maar in beperkte mate betrokken bij het bepalen van de agenda van de lokale City Deal Kennis Maken. Dit onderzoeksproject…

A new book, Learning to Play: Learning Reinforcement and Games by Aske Plaat is now available.

Twee mannen zijn veroordeeld tot zes maanden cel voor het projecteren van racistische leuzen op de Erasmusbrug tijdens de jaarwisseling van 2022 naar 2023. Universitair hoofddocent Marloes van Noorloos sprak met de Volkskrant over de strafbaarheid van dergelijke leuzen.

‘Vrijwel elke kritische reflectie op AI en de richting waarin AI zich op dit moment ontwikkelt, ontbreekt’, zegt Reijer Passchier, hoogleraar digitalisering en de democratische rechtsstaat aan de OU en universitair docent staatsrecht in Leiden, in een opiniestuk in de Volkskrant.

Volgens Wim Voermans, hoogleraar staatsrecht, zullen losse erkenningen van landen niet zoveel betekenen. Erkenning is volgens de hoogleraar pas betekenisvol als ook grote spelers als de VS meedoen, zegt hij in NU.nl.

Foute taal? Bestaat niet!

Top scientists of three Dutch universities are working on software and systems for quantum computers. Researchers of the Leiden Institute of Advanced Computer Science (LIACS) and the Leiden Institute of Physics (LION) are developing new algorithms to make those super computers work. The coming years,…

Today, everybody and everything produces data. People produce large amounts of data in social networks and in commercial transactions. Medical, corporate, and government databases continue to grow. Sensors continue to get cheaper and are increasingly connected, creating an Internet of Things, and generating…

Promotor: Prof.dr. J. Schaye, Co-promotor: Marcello Cacciato

Phospholipase A/acyltransferase 3 (PLAAT3) and PLAAT4 are enzymes involved in the synthesis of bioactive lipids. Despite sequential and structural similarities, the two enzymes differ in activity and specificity.

Nationale Week Zonder Vlees is een landelijke campagne en wordt breed gedragen door diverse partners uit de voedselindustrie!⠀

Quantum annealing belongs to a family of quantum optimization algorithms designed to solve combinatorial optimization problems using programmable quantum hardware. In this thesis, various methods are developed and tested to understand how to formulate combinatorial optimization problems for quantum…

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

At Leiden University, researchers from all disciplines work together to find answers and design innovations in the field of artificial intelligence.

This thesis deals with the use of sound in interactions in the context of participatory systems and data sonification. We investigate an interactive environment where participants perceive information of the data through sound elements.

Dit proefschrift beschrijft een collectie aan alternatieve strategieën voor het begrijpen, ontwerpen en toepassen van lipide nanosystemen, waarin de rol van de bio-nano interacties centraal staan. In het bijzonder wordt gekeken naar de interactie van RNA-lipide nanosystemen, bekend van de toepassing…

Fighting for the faith, caring for the sick, and praying for the soul of their benefactors were the main tasks of the military orders, who since the time of the crusades were well represented in the Netherlands in the Middle Ages, including the Frisian lands. Especially the Hospitallers and the Teutonic…

This thesis mainly focuses on multimodal understanding and Visual Question Answering (VQA) via deep learning methods. For technical contributions, this thesis first focuses on improving multimodal fusion schemes via multi-stage vision-language interactions.

In this work we describe three methods to improve the performance of Quantum Field Theory calculations.

We are living in an information era where the amount of image and video data increases exponentially.

Reinforcement learning is a framework that enables agents to learn in a manner similar to humans, i.e. through trial and error. Ideally, we would like to train a generalist agent capable of performing multiple tasks and achieving various goals.

This thesis mainly focuses on cross-modal retrieval and single-modal image retrieval via deep learning methods, i.e. by using deep convolutional neural networks.

This year, the National Clean-up Day, in an adapted form, will take place. Join us and take a clean-up walk on Saturday, March 20.⠀

Do objectively correct solutions to ethical dilemmas exist? Or is ethics always a matter of your opinion against my opinion? How do you know what to do? What kind of thing is ethics anyway? Can you be an expert in ethics?

Natural history collections provide invaluable sources for researchers with different disciplinary backgrounds, aspiring to study the geographical distribution of flora and fauna across the globe as well as other evolutionary processes.

The invention of neural networks marks a critical milestone in the pursuit of true artificial intelligence. Despite their impressive performance on various tasks, these networks face limitations in learning efficiently as they are often trained from scratch.

Een nieuw boek in de reeks Elementaire deeltjes

This thesis manuscript explores the use of video games as tools for conceptual exploration and academic research.

Promotores: T.H.W. Bäck, A. Plaat, Co-promotor: F.J. Verbeek

The LOFAR radio telescope produces petabytes of data every year. Radio Astronomers use complex multi-step pipelines to process this data and produce scientific images.

More on the Dutch webpage.

We highly advise you to register with a GP in Leiden or The Hague before arrival or soon after you get here.

De positie van kunst en kunstenaars in de westerse samenleving

On 10 June 2020, Gitta Veldt defended her thesis 'Europese productnormen en privaatrechtelijke normstelling'. The doctoral research was supervised by Prof. H.J. Snijders.

The change from a closed institution to an open living environment for patients with late stages of dementia will give the patients more freedom in their day-to-day life. The effect of this change on the patients’ mobility, activity and interaction with others will be assessed with sensor technology…

In this thesis an activity-based probe was discovered that could visualize the activity of PLAATs. With an optimized gel-based ABPP assay in hand, screening of a compound library led to the discovery of alpha-ketoamides as a hit for PLAAT3.

A P300-based Brain Computer Interface character speller, also known as P300 speller, has been an important communication pathway, under extensive research, for people who lose motor ability, such as patients with Amyotrophic Lateral Sclerosis or spinal-cord injury because a P300 speller allows human-beings…

Jasper de Bruin, Guus Besuijen, Hans Siemons & Jeroen van Zoolingen (2012). De romeinse nederzetting bij het tegenwoordige Goedereede heeft waarschijnlijk een belangrijke functie gehad in de overslag en distributie van diverse goederen, waaronder keramiek en voedingsgewassen. De opgraving van deze nederzetting…

In deep reinforcement learning, searching and learning techniques are two important components. They can be used independently and in combination to deal with different problems in AI, and have achieved impressive results in game playing and robotics. These results have inspired research into artificial…

The thesis is part of a bigger project, the HEPGAME (High Energy Physics Game). The main objective for HEPGAME is the utilization of AI solutions, particularly by using MCTS for simplification of HEP calculations.

On this page, you will find the recordings of the Tuesday Talks since April 2025. Recordings of the precursor to the Tuesday Talks, This Week’s Discoveries, are also available here.

How to come to valid risk stratification of alcohol use disorder?

Tussen de sterren is niet alleen leegte. Er zweven ook stoffen als methanol en koolstofdioxide. Chemische theorieën kunnen nog niet verklaren hoe die zijn ontstaan onder omstandigheden die dat juist onmogelijk zouden moeten maken. Fedor Goumans gaat met een Veni-beurs proberen die vraag te beantwoor…

Computers are capable of making incredibly accurate predictions on the basis of machine learning. In other words, these computers can learn without intervention once they have been pre-programmed by humans. At LIACS, we explore and push the borders of what a revolutionary new generation of algorithms…