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Optimizing in and for Collaborative Kidney Exchanges
Kidney exchanges are one way of helping patients who require a kidney transplant and have a willing, but incompatible, donor.Find out more »
"Assessing the Similarity of Drug Dissolution Profiles"
Equivalence analyses are a frequently addressed problem during drug development.
Suman Chakraborty (TU/e) k-core in random subgraphs of dense graphs k-core is the maximal subgraph of vertices with degree at least k in the subgraph. These subgraphs not only have interesting structures, they have also turned out to be important in other areas of studies as well. For example, they arose in the study of chromatic number of sparse random graphs, and graph mining problems in computer science. In this talk we will discuss the size of the k-core in random subgraphs…Find out more »
Jaap Storm (TU/e) Introduction and Research Overview Kinematic wave models have been used since the 1960’s to describe traffic flows on networks as a fluid. This approach has been fruitful, but does not take into account one important aspect, namely, that traffic dynamics are stochastic. The intuition for this is that traffic flows are influenced by both physical laws, and uncontrollable variables, e.g., human behavior, the weather, and differences between vehicles. In the talk, I will present (on a high…Find out more »
Guillem Perarnau Extremal stationary values for directed random graphs In this talk, we will discuss the minimum positive value of the stationary distribution of a random walk on a directed random graph with given (bounded) degrees. While for undirected graphs the stationary distribution is simply determined by the degrees, the graph geometry plays a major role in the directed case. Understanding typical stationary values is key to determining the mixing time of the walk, as shown by Bordenave, Caputo, and…Find out more »
Piotr Zwiernik Modelling with positive dependence: graphical models, and convex optimization Probability distributions that are multivariate totally positive of order 2 (MTP2) appeared in the theory of positive dependence and in statistical physics through the celebrated FKG inequality. The MTP2 property is stable under marginalization, conditioning and it appears naturally in various probabilistic graphical models with hidden variables. Models of exponential families with the MTP2 property admit a unique maximum likelihood estimator. In the Gaussian case, the MLE exists also…Find out more »
Christian Hirsch (RUG) Modeling synaptic plasticity through dynamically reinforced random networks Graph-based Pólya urns are a promising approach to model random processes on networks that exhibit self-reinforcing phenomena such as the ones inspired by synaptic plasticity in neuroscience. As in classic Pólya urns, the network-based analogues behave very differently in regimes of weak and strong reinforcement. At weak reinforcement, the effect of reinforcement disappears in the long-term limit. At strong reinforcement, we observe clear localization phenomena. Moreover, we present a…Find out more »
Summary The aim of this workshop is to bring together researchers and companies in the Netherlands interested in or already working on data-driven solutions for reducing the spread of COVID-19. Format Online Organizers We are a consortium of four universities (TU Eindhoven, UMC Leiden, University of Utrecht, University of Twente) and two data science companies (Mezuro, Ilionx) that aims to develop a predictive dashboard for local corona outbreaks, funded by ZonMw grant 10430 03291 001 `Mobility and behavior-based early-warning system…Find out more »
Mikloz Racz (Princeton) An Adversarial Perspective on Network Disruption I will discuss a simple new model of network disruption, where an adversary can take over a limited number of user profiles in a social network with the aim of maximizing disagreement and/or polarization in the network. I will present both theoretical and empirical results. Theoretically, we characterize aspects of the adversary’s optimal decisions and prove bounds on their disruptive power. Furthermore, we present a detailed empirical study of several natural…Find out more »