{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:G2THAIR22HKENLKYR67BQHJFXQ","short_pith_number":"pith:G2THAIR2","canonical_record":{"source":{"id":"1805.03499","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2018-04-23T11:52:04Z","cross_cats_sorted":["nlin.CD"],"title_canon_sha256":"de69c3fb743b4b676d8e39e8f28646375a9280dc94a1cb1ec29ccf2f57040015","abstract_canon_sha256":"b5bcb6b04f4251a868386d9b8e1725080b8380591c83b445387ab2af49d12e4a"},"schema_version":"1.0"},"canonical_sha256":"36a670223ad1d446ad588fbe181d25bc04af52e462b96ad65c4029f87cc74520","source":{"kind":"arxiv","id":"1805.03499","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.03499","created_at":"2026-05-18T00:16:20Z"},{"alias_kind":"arxiv_version","alias_value":"1805.03499v1","created_at":"2026-05-18T00:16:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.03499","created_at":"2026-05-18T00:16:20Z"},{"alias_kind":"pith_short_12","alias_value":"G2THAIR22HKE","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"G2THAIR22HKENLKY","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"G2THAIR2","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:G2THAIR22HKENLKYR67BQHJFXQ","target":"record","payload":{"canonical_record":{"source":{"id":"1805.03499","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2018-04-23T11:52:04Z","cross_cats_sorted":["nlin.CD"],"title_canon_sha256":"de69c3fb743b4b676d8e39e8f28646375a9280dc94a1cb1ec29ccf2f57040015","abstract_canon_sha256":"b5bcb6b04f4251a868386d9b8e1725080b8380591c83b445387ab2af49d12e4a"},"schema_version":"1.0"},"canonical_sha256":"36a670223ad1d446ad588fbe181d25bc04af52e462b96ad65c4029f87cc74520","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:16:20.042683Z","signature_b64":"hxZenZGGV8xWcx1oh/geKLT0y9OHecMEfSFOByBxiWzmdbRfnWUeSt8VFZAQdALJmNhjFoT3A3FQL9WjOA7LCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"36a670223ad1d446ad588fbe181d25bc04af52e462b96ad65c4029f87cc74520","last_reissued_at":"2026-05-18T00:16:20.041854Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:16:20.041854Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.03499","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:16:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EnvUwcL0+12oPZ38Hw2AAG0JYCUtdDRrhxVch2LY+FPTY3/G/LwPT+VZrAaXkwpG//uzb4VcQzgb8sDgjbslBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T09:15:47.771616Z"},"content_sha256":"dea2838b2946121e9cf7b57dff58d5e2663c0689d51da75528e3b16ecfd326a0","schema_version":"1.0","event_id":"sha256:dea2838b2946121e9cf7b57dff58d5e2663c0689d51da75528e3b16ecfd326a0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:G2THAIR22HKENLKYR67BQHJFXQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sparse Identification of Nonlinear Duffing Oscillator From Measurement Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nlin.CD"],"primary_cat":"physics.class-ph","authors_text":"Guillaume Crevecoeur, Kevin Dekemele, Luc Dupre, Mia Loccufier, Saeideh Khatiry Goharoodi","submitted_at":"2018-04-23T11:52:04Z","abstract_excerpt":"In this paper we aim to apply an adaptation of the recently developed technique of sparse identification of nonlinear dynamical systems on a Duffing experimental setup with cubic feedback of the output. The Duffing oscillator described by nonlinear differential equation which demonstrates chaotic behavior and bifurcations, has received considerable attention in recent years as it arises in many real-world engineering applications. Therefore its identification is of interest for numerous practical problems. To adopt the existing identification method to this application, the optimization proces"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.03499","kind":"arxiv","version":1},"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":"2026-05-18T00:16:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZhM7y5AIqhJZdV6Pv2FoccGwUIjWjJp0RtskayLphaPxjLBcbPdmRispIilVler8/UHGnI5nxC3ILD+LTh92Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T09:15:47.771976Z"},"content_sha256":"a2734eed912bfb6a36d7d576a11dc157d1e08d90e63a2fa7198367efa1a87451","schema_version":"1.0","event_id":"sha256:a2734eed912bfb6a36d7d576a11dc157d1e08d90e63a2fa7198367efa1a87451"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G2THAIR22HKENLKYR67BQHJFXQ/bundle.json","state_url":"https://pith.science/pith/G2THAIR22HKENLKYR67BQHJFXQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G2THAIR22HKENLKYR67BQHJFXQ/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":"2026-06-12T09:15:47Z","links":{"resolver":"https://pith.science/pith/G2THAIR22HKENLKYR67BQHJFXQ","bundle":"https://pith.science/pith/G2THAIR22HKENLKYR67BQHJFXQ/bundle.json","state":"https://pith.science/pith/G2THAIR22HKENLKYR67BQHJFXQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G2THAIR22HKENLKYR67BQHJFXQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:G2THAIR22HKENLKYR67BQHJFXQ","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":"b5bcb6b04f4251a868386d9b8e1725080b8380591c83b445387ab2af49d12e4a","cross_cats_sorted":["nlin.CD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2018-04-23T11:52:04Z","title_canon_sha256":"de69c3fb743b4b676d8e39e8f28646375a9280dc94a1cb1ec29ccf2f57040015"},"schema_version":"1.0","source":{"id":"1805.03499","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.03499","created_at":"2026-05-18T00:16:20Z"},{"alias_kind":"arxiv_version","alias_value":"1805.03499v1","created_at":"2026-05-18T00:16:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.03499","created_at":"2026-05-18T00:16:20Z"},{"alias_kind":"pith_short_12","alias_value":"G2THAIR22HKE","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"G2THAIR22HKENLKY","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"G2THAIR2","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:a2734eed912bfb6a36d7d576a11dc157d1e08d90e63a2fa7198367efa1a87451","target":"graph","created_at":"2026-05-18T00:16:20Z","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":"In this paper we aim to apply an adaptation of the recently developed technique of sparse identification of nonlinear dynamical systems on a Duffing experimental setup with cubic feedback of the output. The Duffing oscillator described by nonlinear differential equation which demonstrates chaotic behavior and bifurcations, has received considerable attention in recent years as it arises in many real-world engineering applications. Therefore its identification is of interest for numerous practical problems. To adopt the existing identification method to this application, the optimization proces","authors_text":"Guillaume Crevecoeur, Kevin Dekemele, Luc Dupre, Mia Loccufier, Saeideh Khatiry Goharoodi","cross_cats":["nlin.CD"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2018-04-23T11:52:04Z","title":"Sparse Identification of Nonlinear Duffing Oscillator From Measurement Data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.03499","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:dea2838b2946121e9cf7b57dff58d5e2663c0689d51da75528e3b16ecfd326a0","target":"record","created_at":"2026-05-18T00:16:20Z","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":"b5bcb6b04f4251a868386d9b8e1725080b8380591c83b445387ab2af49d12e4a","cross_cats_sorted":["nlin.CD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2018-04-23T11:52:04Z","title_canon_sha256":"de69c3fb743b4b676d8e39e8f28646375a9280dc94a1cb1ec29ccf2f57040015"},"schema_version":"1.0","source":{"id":"1805.03499","kind":"arxiv","version":1}},"canonical_sha256":"36a670223ad1d446ad588fbe181d25bc04af52e462b96ad65c4029f87cc74520","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"36a670223ad1d446ad588fbe181d25bc04af52e462b96ad65c4029f87cc74520","first_computed_at":"2026-05-18T00:16:20.041854Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:16:20.041854Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hxZenZGGV8xWcx1oh/geKLT0y9OHecMEfSFOByBxiWzmdbRfnWUeSt8VFZAQdALJmNhjFoT3A3FQL9WjOA7LCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:16:20.042683Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.03499","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dea2838b2946121e9cf7b57dff58d5e2663c0689d51da75528e3b16ecfd326a0","sha256:a2734eed912bfb6a36d7d576a11dc157d1e08d90e63a2fa7198367efa1a87451"],"state_sha256":"c0288b87cd1fe33f2775e938fd295302d58f0aba0dda45d48e004fb9316d4b43"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b1FSr16+ZGh66q/O0a3F4Eb3j9YVMEev5XRshQPnyKKhVGBkIQcSAC9lnKGocXW8Qe0IbtCVi67Id5zr02JHAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T09:15:47.773949Z","bundle_sha256":"bf74434c7ba962d11a4f4b570dd206cc4bd50c4c3aaf7f562e07fdeb734de45f"}}