## December 2019

### Eindhoven Stochastics Seminar

Gianmarco Bet (University of Florence) Weighted Dyck paths for non stationary queues We consider a model for a transitory queue in which only a fixed number $N$ of customers can join. Each customer joins the queue independently of the other ones at a random time, which we assume to be exponentially distributed. Assuming further that the service times also follow an exponential distribution, this system can be described as a two-dimensional Markov process on a triangular subset of $\mathbb Z^2$. The…

Find out more »## January 2020

### Eindhoven Stochastics Seminar

Seva Shneer (Heriot-Watt University) Utility-maximising properties of some service-rates allocations in wireless communication networks We consider wireless communication networks where service rates of nodes depend on their signal to interference plus noise ratios. We demonstrate that these rates are utility-maximising in a certain sense. Using this observation, we prove stability of single-hop networks under natural assumptions. We also obtain bounds on some moments of the stationary workload. In order to obtain these results, we consider a framework of utility-optimising rate allocations which is…

Find out more »## February 2020

### Eindhoven Stochastics Seminar

Jim Portegies (TU Eindhoven) Tropical probability and information optimization Together with Slava Matveev, we've been developing a theory of tropical probability, which is a metric-geometric perspective on information theory that can be helpful in the study of information-optimization problems. In this talk I will give a coarse overview of what we have developed so far, explain what we mean by information-optimization problems and indicate an application to such a problem.

Find out more »### Eindhoven Stochastics Seminar

Rob van der Mei (CWI & VU Amsterdam) Saving Lives by Stochastic Optimization In serious, life-threatening situations, the timely presence of emergency services (ambulance, firefighters) can make the difference between survival or death. In this talk, I will discuss a number of models and optimization results and show that they can really make the difference.

Find out more »## March 2020

### Eindhoven Stochastics Seminar

Wouter de Vries (KPN) Artificial intelligent processes for people About 75 years after the first prudent attempts to capture artificial intelligence in conceptual models, the field is now an exuberant and flourishing domain. Many ingenious applications find their way to consumers and businesses, as well as the telecommunications sector. Through some appealing examples, such as image recognition and speech recognition, this lecture gives an impression of what artificial intelligence is about. In addition, some insights are given from the founding…

Find out more »## April 2020

### CANCELLED: Graph Limits

CANCELLED due to Corona Virus Summary The workshop will address both the basic theory and the applications of graph limits, focusing on graphons and graphexes, as well as various applications. In the last few years several beautiful and exciting developments have taken place in this area. It is therefore time to bring together researchers from different fields, including probability theory, combinatorics, statistics and algorithmics. The workshop will run from Monday morning 09.00 am till Thursday afternoon 17.00 pm Sponsors …

Find out more »## May 2020

### CANCELLED: Workshop YEP XVII: "Interacting Particle Systems"

Summary The theory of Interacting Particle Systems focuses on the dynamics of systems consisting of a large or infinite number of entities, in which the mechanism of evolution is random and follows simple, local rules. The topic had its beginnings in the 70s and 80s, motivated by Statistical Physics and fundamental problems from Probability Theory. It has since developed into a fruitful source of interesting mathematical questions and a very successful framework to model emerging collective complex behavior for systems…

Find out more »### CANCELLED: Safe, Anytime-Valid Inference (SAVI)

Summary A large fraction of published research in top journals in applied sciences such as medicine and psychology has been claimed as irreproducable. In light of this 'replicability crisis', traditional methods for hypothesis testing, most notably those based on p-values, have come under intense scrutiny. One central problem is the following: if our test result is promising but non-conclusive (say, p = 0.07) we cannot simply decide to gather a few more data points. While this practice is ubiquitous in…

Find out more »## September 2020

### Eindhoven SPOR seminar

Elisa Perrone (TU/e) Geometric structure in dependence models and applications. Abstract: The growing availability of data makes it challenging yet crucial to model complex dependence traits. For example, hydrological and financial data typically display tail dependences, non-exchangeability, or stochastic monotonicity. Copula functions serve as mathematical tools for capturing these complex traits and constructing accurate dependence models that resemble the underlying distributions of data. This talk explores the geometric properties of copulas to address dependence modeling challenges in applications. In particular,…

Find out more »### Eindhoven SPOR Seminar

Zsolt Bartha Replica Symmetry Breaking in the Random Regular k-NAE-SAT Problem Abstract: For several models of random constraint satisfaction problems, it was conjectured by physicists and later proved that a sharp satisfiability transition occurs. For random k-SAT and related models it happens at constraint density alpha ~ 2^k. Just below the threshold, further results suggest that the solution space has a “one-step replica symmetry breaking” (1RSB) structure of a large bounded number of near-orthogonal clusters inside {0,1}^N. In the unsatisfiable…

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