{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:4WQUV7HBW5O3TCTULCK2CVYZZE","short_pith_number":"pith:4WQUV7HB","canonical_record":{"source":{"id":"2405.18731","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-05-29T03:21:09Z","cross_cats_sorted":["cs.AI","physics.comp-ph"],"title_canon_sha256":"f0b7b01f3eb7e1e967a443fa0045e41c4c1e5015bf447086035a25c9ed14fea2","abstract_canon_sha256":"12e4f8bc0a951d48b7f6ef9c3d442a76f420b9d6f0b56fef5fbc61329b80d5bb"},"schema_version":"1.0"},"canonical_sha256":"e5a14afce1b75db98a745895a15719c929c2cf72f9c09c6de30bea04389c5304","source":{"kind":"arxiv","id":"2405.18731","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.18731","created_at":"2026-07-05T10:08:17Z"},{"alias_kind":"arxiv_version","alias_value":"2405.18731v4","created_at":"2026-07-05T10:08:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.18731","created_at":"2026-07-05T10:08:17Z"},{"alias_kind":"pith_short_12","alias_value":"4WQUV7HBW5O3","created_at":"2026-07-05T10:08:17Z"},{"alias_kind":"pith_short_16","alias_value":"4WQUV7HBW5O3TCTU","created_at":"2026-07-05T10:08:17Z"},{"alias_kind":"pith_short_8","alias_value":"4WQUV7HB","created_at":"2026-07-05T10:08:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:4WQUV7HBW5O3TCTULCK2CVYZZE","target":"record","payload":{"canonical_record":{"source":{"id":"2405.18731","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-05-29T03:21:09Z","cross_cats_sorted":["cs.AI","physics.comp-ph"],"title_canon_sha256":"f0b7b01f3eb7e1e967a443fa0045e41c4c1e5015bf447086035a25c9ed14fea2","abstract_canon_sha256":"12e4f8bc0a951d48b7f6ef9c3d442a76f420b9d6f0b56fef5fbc61329b80d5bb"},"schema_version":"1.0"},"canonical_sha256":"e5a14afce1b75db98a745895a15719c929c2cf72f9c09c6de30bea04389c5304","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:08:17.402216Z","signature_b64":"49vT7hGsh/6rtQ5PQS2C9bgZ7HQstjUO2RxgfuyBrmEGgYh0Wjh09bKuTNonYsNStCPvzyzzFEKPmW1fNcNhAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e5a14afce1b75db98a745895a15719c929c2cf72f9c09c6de30bea04389c5304","last_reissued_at":"2026-07-05T10:08:17.401791Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:08:17.401791Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2405.18731","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:08:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fjcHyb/u3RSip+Dv/om/LS8SRhY0VkrG5xUZsEB4LVvGRLlU78m3ZlQ7LG1IbXqnwXCWeAQ1HX4ek42CwZabAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T16:40:43.791565Z"},"content_sha256":"6a17ab871fee269cf1f2c60ffdb787afa1411c0cb156b55959ad1eb37b715314","schema_version":"1.0","event_id":"sha256:6a17ab871fee269cf1f2c60ffdb787afa1411c0cb156b55959ad1eb37b715314"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:4WQUV7HBW5O3TCTULCK2CVYZZE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"VBIM-Net: Variational Born Iterative Network for Inverse Scattering Problems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI","physics.comp-ph"],"primary_cat":"eess.SP","authors_text":"Haoran Ma, Yusong Wang, Zhaoyang Zhang, Zhun Wei, Ziqing Xing, Zirui Chen","submitted_at":"2024-05-29T03:21:09Z","abstract_excerpt":"Recently, studies have shown the potential of integrating field-type iterative methods with deep learning (DL) techniques in solving inverse scattering problems (ISPs). In this article, we propose a novel Variational Born Iterative Network, namely, VBIM-Net, to solve the full-wave ISPs with significantly improved structural rationality and inversion quality. The proposed VBIM-Net emulates the alternating updates of the total electric field and the contrast in the variational Born iterative method (VBIM) by multiple layers of subnetworks. We embed the analytical calculation of the contrast vari"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.18731","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2405.18731/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:08:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DW5RCBzbWeosuIB39+qtY4NVxwSAarW9G9DFCzAFYQJu2d5U8E3bB0HkcJHHLEjOUVBmmPDKiBO0b5tlnnEoCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T16:40:43.792268Z"},"content_sha256":"cf62028fd625fa8dbda581739c440d24541424e2e5b918cd0e8fb392eb91ede7","schema_version":"1.0","event_id":"sha256:cf62028fd625fa8dbda581739c440d24541424e2e5b918cd0e8fb392eb91ede7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4WQUV7HBW5O3TCTULCK2CVYZZE/bundle.json","state_url":"https://pith.science/pith/4WQUV7HBW5O3TCTULCK2CVYZZE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4WQUV7HBW5O3TCTULCK2CVYZZE/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-05T16:40:43Z","links":{"resolver":"https://pith.science/pith/4WQUV7HBW5O3TCTULCK2CVYZZE","bundle":"https://pith.science/pith/4WQUV7HBW5O3TCTULCK2CVYZZE/bundle.json","state":"https://pith.science/pith/4WQUV7HBW5O3TCTULCK2CVYZZE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4WQUV7HBW5O3TCTULCK2CVYZZE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:4WQUV7HBW5O3TCTULCK2CVYZZE","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":"12e4f8bc0a951d48b7f6ef9c3d442a76f420b9d6f0b56fef5fbc61329b80d5bb","cross_cats_sorted":["cs.AI","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-05-29T03:21:09Z","title_canon_sha256":"f0b7b01f3eb7e1e967a443fa0045e41c4c1e5015bf447086035a25c9ed14fea2"},"schema_version":"1.0","source":{"id":"2405.18731","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.18731","created_at":"2026-07-05T10:08:17Z"},{"alias_kind":"arxiv_version","alias_value":"2405.18731v4","created_at":"2026-07-05T10:08:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.18731","created_at":"2026-07-05T10:08:17Z"},{"alias_kind":"pith_short_12","alias_value":"4WQUV7HBW5O3","created_at":"2026-07-05T10:08:17Z"},{"alias_kind":"pith_short_16","alias_value":"4WQUV7HBW5O3TCTU","created_at":"2026-07-05T10:08:17Z"},{"alias_kind":"pith_short_8","alias_value":"4WQUV7HB","created_at":"2026-07-05T10:08:17Z"}],"graph_snapshots":[{"event_id":"sha256:cf62028fd625fa8dbda581739c440d24541424e2e5b918cd0e8fb392eb91ede7","target":"graph","created_at":"2026-07-05T10:08:17Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2405.18731/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recently, studies have shown the potential of integrating field-type iterative methods with deep learning (DL) techniques in solving inverse scattering problems (ISPs). In this article, we propose a novel Variational Born Iterative Network, namely, VBIM-Net, to solve the full-wave ISPs with significantly improved structural rationality and inversion quality. The proposed VBIM-Net emulates the alternating updates of the total electric field and the contrast in the variational Born iterative method (VBIM) by multiple layers of subnetworks. We embed the analytical calculation of the contrast vari","authors_text":"Haoran Ma, Yusong Wang, Zhaoyang Zhang, Zhun Wei, Ziqing Xing, Zirui Chen","cross_cats":["cs.AI","physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-05-29T03:21:09Z","title":"VBIM-Net: Variational Born Iterative Network for Inverse Scattering Problems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.18731","kind":"arxiv","version":4},"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":"sha256:6a17ab871fee269cf1f2c60ffdb787afa1411c0cb156b55959ad1eb37b715314","target":"record","created_at":"2026-07-05T10:08:17Z","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":"12e4f8bc0a951d48b7f6ef9c3d442a76f420b9d6f0b56fef5fbc61329b80d5bb","cross_cats_sorted":["cs.AI","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-05-29T03:21:09Z","title_canon_sha256":"f0b7b01f3eb7e1e967a443fa0045e41c4c1e5015bf447086035a25c9ed14fea2"},"schema_version":"1.0","source":{"id":"2405.18731","kind":"arxiv","version":4}},"canonical_sha256":"e5a14afce1b75db98a745895a15719c929c2cf72f9c09c6de30bea04389c5304","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e5a14afce1b75db98a745895a15719c929c2cf72f9c09c6de30bea04389c5304","first_computed_at":"2026-07-05T10:08:17.401791Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:08:17.401791Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"49vT7hGsh/6rtQ5PQS2C9bgZ7HQstjUO2RxgfuyBrmEGgYh0Wjh09bKuTNonYsNStCPvzyzzFEKPmW1fNcNhAg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:08:17.402216Z","signed_message":"canonical_sha256_bytes"},"source_id":"2405.18731","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6a17ab871fee269cf1f2c60ffdb787afa1411c0cb156b55959ad1eb37b715314","sha256:cf62028fd625fa8dbda581739c440d24541424e2e5b918cd0e8fb392eb91ede7"],"state_sha256":"d1821abb0134325b28654d92bfa1668b5b720ca959989572f4f254d51b8e2966"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IbN+oeLrCKRo5u32my3VMk3iDXcF/zD8S/2gvCDKysJlPhgKPPuL6wobC1a02VEh7jJOdGK+nEhLgJkCSwP8BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T16:40:43.797679Z","bundle_sha256":"0f242d4b45623013516dd70d48643139e3a5902c34dfdfc11c5bd7f972d0b561"}}