{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:YN45VMXUVV3XJNIBDUIZEA633S","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"20012f80cd6fb4e5259ded4741b23590368a2ed96413e29ec6f171ca0e6b348e","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2016-03-11T13:01:11Z","title_canon_sha256":"891c754953460e80252a6d6ef264ea67da3a3b11c2f1c6f74453106f8e268fcb"},"schema_version":"1.0","source":{"id":"1603.03768","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.03768","created_at":"2026-05-18T01:08:11Z"},{"alias_kind":"arxiv_version","alias_value":"1603.03768v1","created_at":"2026-05-18T01:08:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.03768","created_at":"2026-05-18T01:08:11Z"},{"alias_kind":"pith_short_12","alias_value":"YN45VMXUVV3X","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YN45VMXUVV3XJNIB","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YN45VMXU","created_at":"2026-05-18T12:30:53Z"}],"graph_snapshots":[{"event_id":"sha256:090c83a4f9e2bb69487dc0f094b47d3d7ea37e5645cba749fd4da447e8a6506d","target":"graph","created_at":"2026-05-18T01:08:11Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The Iterative Born Approximation (IBA) is a well-known method for describing waves scattered by semi-transparent objects. In this paper, we present a novel nonlinear inverse scattering method that combines IBA with an edge-preserving total variation (TV) regularizer. The proposed method is obtained by relating iterations of IBA to layers of a feedforward neural network and developing a corresponding error backpropagation algorithm for efficiently estimating the permittivity of the object. Simulations illustrate that, by accounting for multiple scattering, the method successfully recovers the p","authors_text":"Dehong Liu, Hassan Mansour, Petros T. Boufounos, Ulugbek S. Kamilov","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2016-03-11T13:01:11Z","title":"A Recursive Born Approach to Nonlinear Inverse Scattering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.03768","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:ce55afb43c83b53311191bc1ca67d0a3befb735ca009abf7c3c79fcf2bdb3ae3","target":"record","created_at":"2026-05-18T01:08:11Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"20012f80cd6fb4e5259ded4741b23590368a2ed96413e29ec6f171ca0e6b348e","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2016-03-11T13:01:11Z","title_canon_sha256":"891c754953460e80252a6d6ef264ea67da3a3b11c2f1c6f74453106f8e268fcb"},"schema_version":"1.0","source":{"id":"1603.03768","kind":"arxiv","version":1}},"canonical_sha256":"c379dab2f4ad7774b5011d119203dbdc9622ec51d5540a18c13ee879a10f82b1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c379dab2f4ad7774b5011d119203dbdc9622ec51d5540a18c13ee879a10f82b1","first_computed_at":"2026-05-18T01:08:11.586113Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:11.586113Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JBGLo9729bMfaT71BXFexxZmn7YJ9kOhKmw+WCWmHOrB0Kjn8D/fMyckAMNBBw2SaaUHEaBUy8I0tm0XEdpFBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:11.586565Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.03768","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ce55afb43c83b53311191bc1ca67d0a3befb735ca009abf7c3c79fcf2bdb3ae3","sha256:090c83a4f9e2bb69487dc0f094b47d3d7ea37e5645cba749fd4da447e8a6506d"],"state_sha256":"992cdfc25a0c83a66a714d2e75b3fed3e93f36549052fe62011849df340b0127"}