4 papers
Ensemble approximate control variate estimators: Applications to multi-fidelity importance sampling
Trung Pham, Alex A. Gorodetsky
The recent growth in multi-fidelity uncertainty quantification has given rise to a large set of variance reduction techniques that leverage information from model ensembles to prov…
Efficient MCMC Sampling for Bayesian Matrix Factorization by Breaking Posterior Symmetries
Saibal De, Hadi Salehi, Alex Gorodetsky
Bayesian low-rank matrix factorization techniques have become an essential tool for relational data analysis and matrix completion. A standard approach is to assign zero-mean Gauss…
Dynamic multi-agent assignment via discrete optimal transport
Koray G. Kachar, Alex A. Gorodetsky
We propose an optimal solution to a deterministic dynamic assignment problem by leveraging connections to the theory of discrete optimal transport to convert the combinatorial assi…
Semi-implicit methods for the dynamics of elastic sheets
Silas Alben, Alex A. Gorodetsky, Donghak Kim +1
Recent applications (e.g. active gels and self-assembly of elastic sheets) motivate the need to efficiently simulate the dynamics of thin elastic sheets. We present semi-implicit t…