In gravitational wave data analysis, reduced-order modeling (ROM) is a collection of techniques for accelerating the evaluation of parametrized models of the gravitational waveform, e.g. the GWs emitted by compact binary coalescences. Closely related methods, such as reduced-order quadratures, can be used to accelerate the evaluation of the likelihood function used in parameter estimation.

This workshop focuses on:

  • Introducing non-experts to established ROM/ROQ techniques so that a broader community of gravitational wave physicists can build their own ROMs using open-source codes
  • Discuss open challenges and possible solutions for frontier problems, with a view towards LIGO/Virgo’s upcoming observing runs.
  • Discuss new techniques that are under active investigation for overcoming these challenges.
  • Contributed talks on recent research related to the workshop’s themes.
  • Small-group hackathons on projects suggested by attendees.


The workshop will have a mix of talks and a hands-on component where participants can work through examples and build ROMs using standard Python packages.

The idea for this workshop arose in a recent Face-to-Face meeting of the LIGO Virgo Collaboration Waveform subgroup of the Compact Binary Coalescences group. While some of the workshops will focus on LIGO/Virgo’s upcoming observing runs, we welcome participation from non-LVC members.