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MadNIS -- Neural Multi-Channel Importance Sampling

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arxiv 2212.06172 v2 pith:TNXKNLKT submitted 2022-12-12 hep-ph hep-exphysics.comp-ph

MadNIS -- Neural Multi-Channel Importance Sampling

classification hep-ph hep-exphysics.comp-ph
keywords importanceintegrationmulti-channelnumericalsamplingadditionalbi-directionalbuffered
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Theory predictions for the LHC require precise numerical phase-space integration and generation of unweighted events. We combine machine-learned multi-channel weights with a normalizing flow for importance sampling, to improve classical methods for numerical integration. We develop an efficient bi-directional setup based on an invertible network, combining online and buffered training for potentially expensive integrands. We illustrate our method for the Drell-Yan process with an additional narrow resonance.

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Forward citations

Cited by 14 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

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