Search Results for author: Alessio Spurio Mancini

Found 3 papers, 3 papers with code

The future of cosmological likelihood-based inference: accelerated high-dimensional parameter estimation and model comparison

3 code implementations21 May 2024 Davide Piras, Alicja Polanska, Alessio Spurio Mancini, Matthew A. Price, Jason D. McEwen

Standard nested sampling techniques are simply not feasible in this high-dimensional setting, requiring a projected 12 years of compute time on 48 CPU cores; on the other hand, the proposed approach only requires 8 days of compute time on 24 GPUs.

Model Selection Probabilistic Programming

Learned harmonic mean estimation of the marginal likelihood with normalizing flows

1 code implementation30 Jun 2023 Alicja Polanska, Matthew A. Price, Alessio Spurio Mancini, Jason D. McEwen

The learned harmonic mean estimator solves the exploding variance problem of the original harmonic mean estimation of the marginal likelihood.

Model Selection

Towards fast machine-learning-assisted Bayesian posterior inference of microseismic event location and source mechanism

1 code implementation12 Jan 2021 Davide Piras, Alessio Spurio Mancini, Ana M. G. Ferreira, Benjamin Joachimi, Michael P. Hobson

We train a machine learning algorithm on the power spectrum of the recorded pressure wave and show that the trained emulator allows complete and fast event locations for $\textit{any}$ source mechanism.

Bayesian Inference BIG-bench Machine Learning +1

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