{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:HGM5L6ASZJXMGKYMXBTC2DII3I","short_pith_number":"pith:HGM5L6AS","canonical_record":{"source":{"id":"1511.05194","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2015-11-16T21:50:48Z","cross_cats_sorted":["cs.LG","cs.NA","math.NA"],"title_canon_sha256":"1340159eaef0e44bd17f86e15b71ceaf20c9660e169c90e3f7bcaf47082eca35","abstract_canon_sha256":"2e9b7f532f4945481cca8a1dde9c75469d462c414f9f8c85058703c5c45fda24"},"schema_version":"1.0"},"canonical_sha256":"3999d5f812ca6ec32b0cb8662d0d08da07886430c704089223973483afa811b5","source":{"kind":"arxiv","id":"1511.05194","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.05194","created_at":"2026-05-18T01:00:12Z"},{"alias_kind":"arxiv_version","alias_value":"1511.05194v2","created_at":"2026-05-18T01:00:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.05194","created_at":"2026-05-18T01:00:12Z"},{"alias_kind":"pith_short_12","alias_value":"HGM5L6ASZJXM","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"HGM5L6ASZJXMGKYM","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"HGM5L6AS","created_at":"2026-05-18T12:29:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:HGM5L6ASZJXMGKYMXBTC2DII3I","target":"record","payload":{"canonical_record":{"source":{"id":"1511.05194","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2015-11-16T21:50:48Z","cross_cats_sorted":["cs.LG","cs.NA","math.NA"],"title_canon_sha256":"1340159eaef0e44bd17f86e15b71ceaf20c9660e169c90e3f7bcaf47082eca35","abstract_canon_sha256":"2e9b7f532f4945481cca8a1dde9c75469d462c414f9f8c85058703c5c45fda24"},"schema_version":"1.0"},"canonical_sha256":"3999d5f812ca6ec32b0cb8662d0d08da07886430c704089223973483afa811b5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:00:12.694081Z","signature_b64":"36mvxZz8pH1kIG8Qufh6oX3H/ldPAZwh4OMg2Bhff+1Ms18/kgOyFMYXylBxEQa1ORvBZGqfL1EW2Af8FLGZBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3999d5f812ca6ec32b0cb8662d0d08da07886430c704089223973483afa811b5","last_reissued_at":"2026-05-18T01:00:12.693362Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:00:12.693362Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.05194","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:00:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mcO0Jj2/4kN4hkxIQT2mvmFmH4ucmkK7dmAGGArnWF5gUskkYZWVVTZmX+Nir4xG+FWi4ipD8Nq/7Im6QkgRDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T06:25:04.041631Z"},"content_sha256":"47a0bfd0634906b8604a103e35740be1cbfe8d6d1c8337a0c08bd8dbd3433aec","schema_version":"1.0","event_id":"sha256:47a0bfd0634906b8604a103e35740be1cbfe8d6d1c8337a0c08bd8dbd3433aec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:HGM5L6ASZJXMGKYMXBTC2DII3I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sparse-promoting Full Waveform Inversion based on Online Orthonormal Dictionary Learning","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG","cs.NA","math.NA"],"primary_cat":"physics.geo-ph","authors_text":"Entao Liu, James H. McClellan, Lingchen Zhu","submitted_at":"2015-11-16T21:50:48Z","abstract_excerpt":"Full waveform inversion (FWI) delivers high-resolution images of the subsurface by minimizing iteratively the misfit between the recorded and calculated seismic data. It has been attacked successfully with the Gauss-Newton method and sparsity promoting regularization based on fixed multiscale transforms that permit significant subsampling of the seismic data when the model perturbation at each FWI data-fitting iteration can be represented with sparse coefficients. Rather than using analytical transforms with predefined dictionaries to achieve sparse representation, we introduce an adaptive tra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.05194","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T01:00:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R0l0gMZhfSfmfM/j8qsgPH36gErY8yNWCoJrhvW/QvPQ7/rZ9EYWjGK80im0dI+Xqfkk/83YFcDeh7lVgMHqAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T06:25:04.041978Z"},"content_sha256":"63546d558cbe4733fab5c3ec77a4ef6993f0a54bbfbb7c4b5bd770bf554285b2","schema_version":"1.0","event_id":"sha256:63546d558cbe4733fab5c3ec77a4ef6993f0a54bbfbb7c4b5bd770bf554285b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HGM5L6ASZJXMGKYMXBTC2DII3I/bundle.json","state_url":"https://pith.science/pith/HGM5L6ASZJXMGKYMXBTC2DII3I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HGM5L6ASZJXMGKYMXBTC2DII3I/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":"2026-06-27T06:25:04Z","links":{"resolver":"https://pith.science/pith/HGM5L6ASZJXMGKYMXBTC2DII3I","bundle":"https://pith.science/pith/HGM5L6ASZJXMGKYMXBTC2DII3I/bundle.json","state":"https://pith.science/pith/HGM5L6ASZJXMGKYMXBTC2DII3I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HGM5L6ASZJXMGKYMXBTC2DII3I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:HGM5L6ASZJXMGKYMXBTC2DII3I","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":"2e9b7f532f4945481cca8a1dde9c75469d462c414f9f8c85058703c5c45fda24","cross_cats_sorted":["cs.LG","cs.NA","math.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2015-11-16T21:50:48Z","title_canon_sha256":"1340159eaef0e44bd17f86e15b71ceaf20c9660e169c90e3f7bcaf47082eca35"},"schema_version":"1.0","source":{"id":"1511.05194","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.05194","created_at":"2026-05-18T01:00:12Z"},{"alias_kind":"arxiv_version","alias_value":"1511.05194v2","created_at":"2026-05-18T01:00:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.05194","created_at":"2026-05-18T01:00:12Z"},{"alias_kind":"pith_short_12","alias_value":"HGM5L6ASZJXM","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"HGM5L6ASZJXMGKYM","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"HGM5L6AS","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:63546d558cbe4733fab5c3ec77a4ef6993f0a54bbfbb7c4b5bd770bf554285b2","target":"graph","created_at":"2026-05-18T01:00:12Z","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":"Full waveform inversion (FWI) delivers high-resolution images of the subsurface by minimizing iteratively the misfit between the recorded and calculated seismic data. It has been attacked successfully with the Gauss-Newton method and sparsity promoting regularization based on fixed multiscale transforms that permit significant subsampling of the seismic data when the model perturbation at each FWI data-fitting iteration can be represented with sparse coefficients. Rather than using analytical transforms with predefined dictionaries to achieve sparse representation, we introduce an adaptive tra","authors_text":"Entao Liu, James H. McClellan, Lingchen Zhu","cross_cats":["cs.LG","cs.NA","math.NA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2015-11-16T21:50:48Z","title":"Sparse-promoting Full Waveform Inversion based on Online Orthonormal Dictionary Learning"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.05194","kind":"arxiv","version":2},"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":"sha256:47a0bfd0634906b8604a103e35740be1cbfe8d6d1c8337a0c08bd8dbd3433aec","target":"record","created_at":"2026-05-18T01:00:12Z","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":"2e9b7f532f4945481cca8a1dde9c75469d462c414f9f8c85058703c5c45fda24","cross_cats_sorted":["cs.LG","cs.NA","math.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2015-11-16T21:50:48Z","title_canon_sha256":"1340159eaef0e44bd17f86e15b71ceaf20c9660e169c90e3f7bcaf47082eca35"},"schema_version":"1.0","source":{"id":"1511.05194","kind":"arxiv","version":2}},"canonical_sha256":"3999d5f812ca6ec32b0cb8662d0d08da07886430c704089223973483afa811b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3999d5f812ca6ec32b0cb8662d0d08da07886430c704089223973483afa811b5","first_computed_at":"2026-05-18T01:00:12.693362Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:00:12.693362Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"36mvxZz8pH1kIG8Qufh6oX3H/ldPAZwh4OMg2Bhff+1Ms18/kgOyFMYXylBxEQa1ORvBZGqfL1EW2Af8FLGZBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:00:12.694081Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.05194","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:47a0bfd0634906b8604a103e35740be1cbfe8d6d1c8337a0c08bd8dbd3433aec","sha256:63546d558cbe4733fab5c3ec77a4ef6993f0a54bbfbb7c4b5bd770bf554285b2"],"state_sha256":"1011c659532050664931b8dd3ad410ac618aa07740e9279757509d031ae502ac"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fvWOPvQrHDJJBvt6iIsV0CkGR717n74nuwaG7i/5O/rQ6hDEbn1rG1kePQsac7twkTy7Ma0CWJHVaCpk8ngKCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T06:25:04.043816Z","bundle_sha256":"5f35b8eccf19a2b878c279159db1d2e504e9c252b5287416c9dfbe73ad0c740b"}}