https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/Head https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk http://www.nanopub.org/nschema#hasAssertion https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/assertion https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk http://www.nanopub.org/nschema#hasProvenance https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/provenance https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk http://www.nanopub.org/nschema#hasPublicationInfo https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/pubinfo https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk http://www.w3.org/1999/02/22-rdf-syntax-ns#type http://www.nanopub.org/nschema#Nanopublication https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/assertion https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/delouis-2022-lss-replication-study http://www.w3.org/1999/02/22-rdf-syntax-ns#type https://w3id.org/sciencelive/o/terms/FORRT-Replication-Study https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/delouis-2022-lss-replication-study http://www.w3.org/1999/02/22-rdf-syntax-ns#type https://w3id.org/sciencelive/o/terms/Replication-Study https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/delouis-2022-lss-replication-study http://www.w3.org/2000/01/rdf-schema#label Scattering synthesis on a cosmological LSS map (Delouis 2022 replication) https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/delouis-2022-lss-replication-study http://www.w3.org/2004/02/skos/core#related http://www.wikidata.org/entity/Q37547 https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/delouis-2022-lss-replication-study http://www.w3.org/2004/02/skos/core#related http://www.wikidata.org/entity/Q5629401 https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/delouis-2022-lss-replication-study http://www.w3.org/2004/02/skos/core#related http://www.wikidata.org/entity/Q7048759 https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/delouis-2022-lss-replication-study https://w3id.org/sciencelive/o/terms/hasDeviationDescription Three substantive differences from Delouis et al. 2022: 1. Input data: cosmological large-scale-structure map (LSS_map_nside128.npy from the FOSCAT_DEMO repository) rather than Planck SRoll2 353 GHz dust polarisation Stokes Q and U maps. 2. Application: synthesis of a new map from random noise such that its scattering statistics match a target — rather than the FoCUS component-separation algorithm the paper used to denoise Planck observations. 3. Resolution: nside=32 (12,288 pixels), downgraded from the input map's native nside=128. The paper uses nside=256. The lower resolution allows execution on CPU rather than requiring GPU, which keeps the replication runnable on commodity hardware. The library, the scattering-transform implementation, and the underlying methodology are identical to the paper's. The deviations are in the data, the target task (synthesis vs denoising), and the resolution. https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/delouis-2022-lss-replication-study https://w3id.org/sciencelive/o/terms/hasDiscipline http://www.wikidata.org/entity/Q338 https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/delouis-2022-lss-replication-study https://w3id.org/sciencelive/o/terms/hasMethodologyDescription We use the FOSCAT Python package (github.com/jmdelouis/FOSCAT) authored by Delouis — the same software used in the original paper. Scattering coefficients are computed via FOSCAT's scat_cov.funct(NORIENT=4, KERNELSZ=3) on a HEALPix sphere; synthesis is run from random noise using foscat.Synthesis with an L-BFGS optimiser over 300 epochs. The loss is the mean squared difference between the target's scattering coefficients and those of the current synthesised map, normalised by the variance of the target coefficients. We evaluate the synthesised map against the target via three metrics: power spectrum ratio (mean of synthesised / target across multipoles), scattering coefficient improvement percentage, and pixel-level correlation. Inference runs on CPU. https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/delouis-2022-lss-replication-study https://w3id.org/sciencelive/o/terms/hasScopeDescription This study tests the generalisation claim of Delouis et al. 2022 — that the scattering-transform framework developed for Planck dust polarisation can be applied to other processes defined on the sphere. We test that claim on a cosmological large-scale-structure (LSS) map rather than the paper's Planck dust polarisation data. Specifically, we evaluate whether scattering-transform synthesis from random noise can produce a new astrophysical map whose multi-scale statistics (power spectrum and scattering coefficients) match those of a target input. https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/delouis-2022-lss-replication-study https://w3id.org/sciencelive/o/terms/targetsClaim https://w3id.org/sciencelive/np/RANzldYFCS3QYLbv8mQ7yCzVrr83sjOMU11GueTODExw4/delouis-2022-spherical-scattering-claim https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/provenance https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/assertion http://www.w3.org/ns/prov#wasAttributedTo https://orcid.org/0000-0002-1784-2920 https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/pubinfo https://orcid.org/0000-0002-1784-2920 http://xmlns.com/foaf/0.1/name Anne Fouilloux https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk http://purl.org/dc/terms/created 2026-04-26T14:52:17.764Z https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk http://purl.org/dc/terms/creator https://orcid.org/0000-0002-1784-2920 https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk http://purl.org/dc/terms/license https://creativecommons.org/licenses/by/4.0/ https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk http://purl.org/nanopub/x/introduces https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/delouis-2022-lss-replication-study https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk http://purl.org/nanopub/x/wasCreatedAt https://platform.sciencelive4all.org https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk http://www.w3.org/2000/01/rdf-schema#label NP created using Declaring a replication study design according to FORRT https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk https://w3id.org/np/o/ntemplate/wasCreatedFromTemplate https://w3id.org/np/RAuLEjPp-4dTvPwMkfHggTto1CgjIftiGRAgHlyeEonjQ https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/sig http://purl.org/nanopub/x/hasAlgorithm RSA https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/sig http://purl.org/nanopub/x/hasPublicKey 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 https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/sig http://purl.org/nanopub/x/hasSignature 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 https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/sig http://purl.org/nanopub/x/hasSignatureTarget https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk https://w3id.org/sciencelive/np/RA0uFwTDq3Ip2_M_ZeHxmfavOu3ZCx9ZEeYSbXE0quHQk/sig http://purl.org/nanopub/x/signedBy https://orcid.org/0000-0002-1784-2920