no code implementations • 10 Aug 2023 • David T. Frazier, Ryan Covey, Gael M. Martin, Donald Poskitt
In addition, we demonstrate that the low power of such predictive accuracy tests in the forecast combination setting can be completely avoided if more efficient estimation strategies are used in the production of the combinations, when feasible.
no code implementations • 31 Jan 2023 • Ryan P. Kelly, David J. Nott, David T. Frazier, David J. Warne, Chris Drovandi
Simulation-based inference techniques are indispensable for parameter estimation of mechanistic and simulable models with intractable likelihoods.
no code implementations • 7 Dec 2022 • Gael M. Martin, David T. Frazier, Worapree Maneesoonthorn, Ruben Loaiza-Maya, Florian Huber, Gary Koop, John Maheu, Didier Nibbering, Anastasios Panagiotelis
The Bayesian statistical paradigm provides a principled and coherent approach to probabilistic forecasting.
no code implementations • 13 Nov 2020 • David T. Frazier, Eric Renault, Lina Zhang, Xueyan Zhao
We study the impact of weak identification in discrete choice models, and provide insights into the determinants of identification strength in these models.
no code implementations • 6 Sep 2020 • Lina Zhang, David T. Frazier, D. S. Poskitt, Xueyan Zhao
This paper examines the identification power of instrumental variables (IVs) for average treatment effect (ATE) in partially identified models.
no code implementations • 18 Jun 2020 • Veronika Czellar, David T. Frazier, Eric Renault
This new approach is based on using a constrained approximation to the structural model, which ensures identification and can deliver estimators that are nearly efficient.
no code implementations • 11 Sep 2019 • Jacob W. Priddle, Scott A. Sisson, David T. Frazier, Christopher Drovandi
Bayesian synthetic likelihood (BSL) is a popular such method that approximates the likelihood function of the summary statistic with a known, tractable distribution -- typically Gaussian -- and then performs statistical inference using standard likelihood-based techniques.
1 code implementation • 9 Apr 2019 • David T. Frazier, Christopher Drovandi
Similar to other approximate Bayesian methods, such as the method of approximate Bayesian computation, implicit in the application of BSL is the maintained assumption that the data generating process (DGP) can generate simulated summary statistics that capture the behaviour of the observed summary statistics.
Methodology Applications Computation