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Seminar 24 August @ 6 pm

  On behalf of SSA NSW branch, we would like to invite you to join the virtual event we are holding on Wed, 24th August 2022. Dr Steph Stammel , the Principal Econometrician at Transurban will speak about how an interdisciplinary approach builds a more detailed, robust view of our future cities. Date:  Wednesday, 24th August 2022 Time:  6:00pm - 7:00pm (AEST) Location:  This is a virtual event. You will need to register in advance  here  to obtain the Zoom link.  Steph Stammel  - Transurban Title:  Managing uncertainty: statistics and econometrics as part of a multidisciplinary approach Abstract: Long range forecasting is difficult at the best of times. In current times, increasing sophistication is simply not enough to manage the high levels of uncertainty we face. At Transurban, our mission is to create and manage road transport solutions that serve our communities now – and in the future. To do this well, we need a detailed and long-term view of the cities we serve. Data science, st
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(Cancelled) Seminar 19 Aug @2pm

Announcement 19/08/2022: Due to Covid-19, the speaker is not able to present his talk, so this seminar is cancelled. Can discrete distributions be arbitrarily underdispersed? Speaker: Alan Huang, University of Queensland  Time: 14h-15h Zoom link at https://uni-sydney.zoom.us/j/88489005077 We survey a range of popular count distributions, investigating which (if any) can be arbitrarily underdispersed, i.e., its variance can be arbitrarily small compared to its mean. A philosophical implication is that certain models failing this criterion should perhaps not be considered "statistical models" according to the extendibility criterion of McCullagh (2002). Four practical implications will be discussed. We suggest that all generalizations of the Poisson distribution be tested against this property.

Seminar 18 August @ 10 am AEST

Sample Path and Extreme Value Properties of Multivariate Gaussian Random Fields Date: 18 August 2022, Thursday Time: 10am AEST Statistics and Stochastic colloquium (part of the Colloquium Series of the Department of Mathematics and Statistics) at La Trobe University jointly organized with the Probability Victoria Seminar. Contact the organizers: Kostya Borovkov kostya.borovkov@gmail.com, Andriy Olenko a.olenko@latrobe.edu.au Speaker: Prof Yimin Xiao ( Michigan State University, USA) Abstract: In this talk, we present some recent results on sample path and extreme value properties of a large class of multivariate Gaussian random fields including multivariate Gaussian fields, operator fractional Brownian motion, vector-valued operator-scaling random fields, and matrix-valued Gaussian random fields. These results illustrate explicitly the effects of the dependence structures among the coordinate processes on the sample path and extreme value properties of multivariate Gaussian random

Seminar 9 August @ 6:00pm (AEST)

    The population properties of merging compact binaries from gravitational waves. Date: Tuesday, 9 August 2022   Time: 6:00pm (AEST)   Speaker:  Eric Thrane (Monash University, Australia)  Contact the organizer: Andriy Olenko a.olenko@latrobe.edu.au Abstract: With the publication of the third gravitational-wave transient catalog (GWTC-3), the LIGO and Virgo Collaborations have confidently identified 90 signals from merging compact binaries. By analysing the morphology of each gravitational waveform, we are able to work out the masses and spins of the black holes and neutron stars that source these signals. By studying the distributions of black-hole mass, spin, and distance, we are painting a picture of the population properties of compact mergers, providing clues about the fate of massive stars and telling us how and where binary black holes are assembled. In this talk, I describe how we use Bayesian hierarchical modelling to study merging black holes. I emphasise the importance of