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Rapid Likelihood Free Inference of Compact Binary Coalescences using Accelerated Hardware
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Rapid Likelihood Free Inference of Compact Binary Coalescences using Accelerated Hardware
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Paper
Rapid Likelihood Free Inference of Compact Binary Coalescences using Accelerated Hardware
2024
Overview
We report a gravitational-wave parameter estimation algorithm, AMPLFI, based on likelihood-free inference using normalizing flows. The focus of AMPLFI is to perform real-time parameter estimation for candidates detected by machine-learning based compact binary coalescence search, Aframe. We present details of our algorithm and optimizations done related to data-loading and pre-processing on accelerated hardware. We train our model using binary black-hole (BBH) simulations on real LIGO-Virgo detector noise. Our model has \\( 6\\) million trainable parameters with training times \\( 24\\) hours. Based on online deployment on a mock data stream of LIGO-Virgo data, Aframe + AMPLFI is able to pick up BBH candidates and infer parameters for real-time alerts from data acquisition with a net latency of \\( 6\\)s.
Publisher
Cornell University Library, arXiv.org
Subject
