153 citations
- Center for Astrophysics Harvard & SmithsonianUS3 papers
- Australian National UniversityAU1 paper
- California Institute of TechnologyUS1 paper
- California University of PennsylvaniaUS1 paper
- Eastern UniversityUS1 paper
- Harvard University PressUS1 paper
- Institute of Astronomy and Astrophysics, Academia SinicaTW1 paper
- Kavli Institute for Particle Astrophysics and CosmologyUS1 paper
- Kitt Peak National ObservatoryUS1 paper
- Lawrence Livermore National LaboratoryUS1 paper
- National Central UniversityTW1 paper
- Philadelphia UniversityUS1 paper
7 papers
Slopes of Siegel cusp forms and geometry of compactified Kuga varieties
Flora Poon, Riccardo Salvati Manni, Gregory Sankaran
We study the Kodaira dimension of the compactified n-fold Kuga variety over the moduli space of principally polarised abelian g-folds. We construct a suitable compactification, whi…
Efficient Hyperparameter Tuning with Dynamic Accuracy Derivative-Free Optimization
Matthias J. Ehrhardt, Lindon Roberts
Many machine learning solutions are framed as optimization problems which rely on good hyperparameters. Algorithms for tuning these hyperparameters usually assume access to exact s…
A temporal multiscale approach for MR Fingerprinting
Samuel Cortinhas, Mohammad Golbabaee, Matthias J. Ehrhardt
Quantitative MRI (qMRI) is becoming increasingly important for research and clinical applications, however, state-of-the-art reconstruction methods for qMRI are computationally pro…
Gradient descent in a generalised Bregman distance framework
Martin Benning, Marta M. Betcke, Matthias J. Ehrhardt +1
We discuss a special form of gradient descent that in the literature has become known as the so-called linearised Bregman iteration. The idea is to replace the classical (squared)…
Finding Anomalous Periodic Time Series: An Application to Catalogs of Periodic Variable Stars
Umaa Rebbapragada, Pavlos Protopapas, Carla E. Brodley +1
Catalogs of periodic variable stars contain large numbers of periodic light-curves (photometric time series data from the astrophysics domain). Separating anomalous objects from we…
The Taiwanese-American Occultation Survey: The Multi-Telescope Robotic Observatory
M. J. Lehner, C. -Y. Wen, J. -H. Wang +16
The Taiwanese-American Occultation Survey (TAOS) operates four fully automatic telescopes to search for occultations of stars by Kuiper Belt Objects. It is a versatile facility tha…