SeminarsInterwoven LiveSite
https://www.southampton.ac.uk/maths/news/seminars/latest.pageMathematical Sciences seminarsS3RI Seminar - Dr Fang Wan (Lancaster University)https://cdn.southampton.ac.uk/assets/imported/transforms/site/seminar/PageThumbnail/628F48F010A8491880342DA31BA13D3C/S3RI.JPG_SIA_JPG_fit_to_width_XL.jpghttps://www.southampton.ac.uk/maths/news/seminars/2019/02/28-s3ri-seminar.pageThu, 28 Feb 2019 00:00:00 +0000
[14:00 - 15:00, 28 February 2019]
An interesting seminar, be sure not to miss it!Pure Maths Colloquium - Dr Nadia Mazza (Lancaster)https://cdn.southampton.ac.uk/assets/imported/transforms/site/seminar/PageThumbnail/131857DE045A4EF48D239D39F5C0F651/pure-colloq-img.png_SIA_JPG_fit_to_width_XL.jpghttps://www.southampton.ac.uk/maths/news/seminars/2019/02/22-pure-colloq-mazza.pageFri, 22 Feb 2019 00:00:00 +0000
[15:00, 22 February 2019 - 16:00, 22 February 2018]
Abstract: coming soon-ishGravity Seminar - Karl Landsteiner (Instituto de Física Teórica, Madrid)https://cdn.southampton.ac.uk/assets/imported/transforms/site/seminar/PageThumbnail/D5EE53076518499BA24AD61607BE4AAC/Gravity.JPG_SIA_JPG_fit_to_width_XL.jpghttps://www.southampton.ac.uk/maths/news/seminars/2019/02/21-gravity-seminar.pageThu, 21 Feb 2019 00:00:00 +0000
[12:00 - 13:00, 21 February 2019]
An interesting seminar, be sure not to miss it!Pure Maths Colloquium - Dr Alex Margolis (Technion)https://cdn.southampton.ac.uk/assets/imported/transforms/site/seminar/PageThumbnail/131857DE045A4EF48D239D39F5C0F651/pure-colloq-img.png_SIA_JPG_fit_to_width_XL.jpghttps://www.southampton.ac.uk/maths/news/seminars/2019/02/15-pure-colloq-margolis.pageFri, 15 Feb 2019 00:00:00 +0000
[15:00 - 16:00, 15 February 2019]
Abstract: coming soon-ishGravity Seminar - Professor Sebastiano Bernuzzi (University of Parma)https://cdn.southampton.ac.uk/assets/imported/transforms/site/seminar/PageThumbnail/D5EE53076518499BA24AD61607BE4AAC/Gravity.JPG_SIA_JPG_fit_to_width_XL.jpghttps://www.southampton.ac.uk/maths/news/seminars/2019/02/14-gravity-seminar.pageThu, 14 Feb 2019 00:00:00 +0000
[12:00 - 13:00, 14 February 2019]
An interesting seminar, be sure not to miss it!S3RI Seminar - "Univariate Mean Change Point Detection: Penalization, CUSUM and Optimality", Dr Yi Yu (University of Bristol)https://cdn.southampton.ac.uk/assets/imported/transforms/site/seminar/PageThumbnail/628F48F010A8491880342DA31BA13D3C/S3RI.JPG_SIA_JPG_fit_to_width_XL.jpghttps://www.southampton.ac.uk/maths/news/seminars/2019/02/14-s3ri-seminar.pageThu, 14 Feb 2019 00:00:00 +0000
[14:00 - 15:00, 14 February 2019]
The problem of univariate mean change point detection and localization based on a sequence of $n$ independent observations with piecewise constant means has been intensively studied for more than half century, and serves as a blueprint for change point problems in more complex settings. We provide a complete characterization of this classical problem in a general framework in which the upper bound on the noise variance $\sigma^2$, the minimal spacing $\Delta$ between two consecutive change points and the minimal magnitude of the changes $\kappa$, are allowed to vary with $n$. We first show that consistent localization of the change points when the signal-to-noise ratio $\frac{\kappa \sqrt{\Delta}}{\sigma}$ is uniformly bounded from above is impossible. In contrast, when $\frac{\kappa \sqrt{\Delta}}{\sigma}$ is diverging in $n$ at any arbitrary slow rate, we demonstrate that two computationally-efficient change point estimators, one based on the solution to an $\ell_0$-penalized least squares problem and the other on the popular WBS algorithm, are both consistent and achieve a localization rate of the order $\frac{\sigma^2}{\kappa^2} \log(n)$. We further show that such rate is minimax optimal, up to a $\log(n)$ term. Pure Maths Colloquium - Prof Daniel Kráľ (Brno)https://cdn.southampton.ac.uk/assets/imported/transforms/site/seminar/PageThumbnail/131857DE045A4EF48D239D39F5C0F651/pure-colloq-img.png_SIA_JPG_fit_to_width_XL.jpghttps://www.southampton.ac.uk/maths/news/seminars/2019/02/08-pure-colloq-kral.pageFri, 08 Feb 2019 00:00:00 +0000
[15:00 - 16:00, 8 February 2019]
Abstract: coming soon-ishGravity Seminar - Silke Weinfurtner (University of Nottingham)https://cdn.southampton.ac.uk/assets/imported/transforms/site/seminar/PageThumbnail/D5EE53076518499BA24AD61607BE4AAC/Gravity.JPG_SIA_JPG_fit_to_width_XL.jpghttps://www.southampton.ac.uk/maths/news/seminars/2019/02/07-gravity-weinfurtner-seminar.pageThu, 07 Feb 2019 00:00:00 +0000
[12:00 - 13:00, 7 February 2019]
An interesting seminar, be sure not to miss it!S3RI Seminar - Professor Dirk Husmeier (University of Glasgow)https://cdn.southampton.ac.uk/assets/imported/transforms/site/seminar/PageThumbnail/628F48F010A8491880342DA31BA13D3C/S3RI.JPG_SIA_JPG_fit_to_width_XL.jpghttps://www.southampton.ac.uk/maths/news/seminars/2019/02/07-s3ri-seminar.pageThu, 07 Feb 2019 00:00:00 +0000
[14:00 - 15:00, 7 February 2019]
An interesting seminar, be sure not to miss it!Gravity Seminar - Dr Inês Aniceto (University of Southampton)https://cdn.southampton.ac.uk/assets/imported/transforms/site/seminar/PageThumbnail/D5EE53076518499BA24AD61607BE4AAC/Gravity.JPG_SIA_JPG_fit_to_width_XL.jpghttps://www.southampton.ac.uk/maths/news/seminars/2019/01/gravity-aniceto-seminar.pageThu, 31 Jan 2019 00:00:00 +0000
[12:00 - 13:00, 31 January 2019]
An interesting seminar, be sure not to miss it!