{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:CQJMV3N7VLBP7COMOX4YL7PCIS","short_pith_number":"pith:CQJMV3N7","canonical_record":{"source":{"id":"2503.04131","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2025-03-06T06:24:51Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"d672b68085bad822bd3d4292fd0149c009539284d376af838a44ca3a0025ea33","abstract_canon_sha256":"6ff681cee4309f2eb35accb203502547e4c3b2e15bf5d8c531fbed7589e10f6a"},"schema_version":"1.0"},"canonical_sha256":"1412caedbfaac2ff89cc75f985fde2449938207cdec3048ad7a2fd73d6ea1f79","source":{"kind":"arxiv","id":"2503.04131","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.04131","created_at":"2026-07-05T10:25:29Z"},{"alias_kind":"arxiv_version","alias_value":"2503.04131v1","created_at":"2026-07-05T10:25:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.04131","created_at":"2026-07-05T10:25:29Z"},{"alias_kind":"pith_short_12","alias_value":"CQJMV3N7VLBP","created_at":"2026-07-05T10:25:29Z"},{"alias_kind":"pith_short_16","alias_value":"CQJMV3N7VLBP7COM","created_at":"2026-07-05T10:25:29Z"},{"alias_kind":"pith_short_8","alias_value":"CQJMV3N7","created_at":"2026-07-05T10:25:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:CQJMV3N7VLBP7COMOX4YL7PCIS","target":"record","payload":{"canonical_record":{"source":{"id":"2503.04131","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2025-03-06T06:24:51Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"d672b68085bad822bd3d4292fd0149c009539284d376af838a44ca3a0025ea33","abstract_canon_sha256":"6ff681cee4309f2eb35accb203502547e4c3b2e15bf5d8c531fbed7589e10f6a"},"schema_version":"1.0"},"canonical_sha256":"1412caedbfaac2ff89cc75f985fde2449938207cdec3048ad7a2fd73d6ea1f79","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:25:29.494118Z","signature_b64":"SRhgCcVPAmzIKhcrY6bn5h4ckP2OKAeGzKVHADz8jWUTN64azYUJmaOw91L15fAk/u/sd/JUAldRB0S9O3KNBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1412caedbfaac2ff89cc75f985fde2449938207cdec3048ad7a2fd73d6ea1f79","last_reissued_at":"2026-07-05T10:25:29.493575Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:25:29.493575Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.04131","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":"2026-07-05T10:25:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TZZcbYjLk7SxsHl6rxUnXYUnJS82sftyt+p8CQw7OVnJ7Qhy8izdbE4wbU5uTKJuG2rRK1lTn8SFW1GDb214Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T10:42:40.411566Z"},"content_sha256":"790fb93435b3cbb5e202c910678e9f983646c039631b228f92c3d081ffa59efe","schema_version":"1.0","event_id":"sha256:790fb93435b3cbb5e202c910678e9f983646c039631b228f92c3d081ffa59efe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:CQJMV3N7VLBP7COMOX4YL7PCIS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Q-PART: Quasi-Periodic Adaptive Regression with Test-time Training for Pediatric Left Ventricular Ejection Fraction Regression","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"cs.CV","authors_text":"Haoliang Li, Hui Liu, Jie Liu, Lichao Mou, Shiqi Wang, Tiexin Qin, Xiao Xiang Zhu, Yilei Shi","submitted_at":"2025-03-06T06:24:51Z","abstract_excerpt":"In this work, we address the challenge of adaptive pediatric Left Ventricular Ejection Fraction (LVEF) assessment. While Test-time Training (TTT) approaches show promise for this task, they suffer from two significant limitations. Existing TTT works are primarily designed for classification tasks rather than continuous value regression, and they lack mechanisms to handle the quasi-periodic nature of cardiac signals. To tackle these issues, we propose a novel \\textbf{Q}uasi-\\textbf{P}eriodic \\textbf{A}daptive \\textbf{R}egression with \\textbf{T}est-time Training (Q-PART) framework. In the traini"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.04131","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2503.04131/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":"2026-07-05T10:25:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K1CBrZJIKCjOWbKlByztv3FaxX5Eev+2R6NLzRvQdrmB1yDtXT9klvqUbs5NUEybE+7TTz9lN/KjVY9nb8ZJBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T10:42:40.412112Z"},"content_sha256":"9647e8ec998f2ac823bb8e1389734c4568ad4b4b06f2f1886b3643da22748aeb","schema_version":"1.0","event_id":"sha256:9647e8ec998f2ac823bb8e1389734c4568ad4b4b06f2f1886b3643da22748aeb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CQJMV3N7VLBP7COMOX4YL7PCIS/bundle.json","state_url":"https://pith.science/pith/CQJMV3N7VLBP7COMOX4YL7PCIS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CQJMV3N7VLBP7COMOX4YL7PCIS/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":"2026-08-06T10:42:40Z","links":{"resolver":"https://pith.science/pith/CQJMV3N7VLBP7COMOX4YL7PCIS","bundle":"https://pith.science/pith/CQJMV3N7VLBP7COMOX4YL7PCIS/bundle.json","state":"https://pith.science/pith/CQJMV3N7VLBP7COMOX4YL7PCIS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CQJMV3N7VLBP7COMOX4YL7PCIS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:CQJMV3N7VLBP7COMOX4YL7PCIS","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":"6ff681cee4309f2eb35accb203502547e4c3b2e15bf5d8c531fbed7589e10f6a","cross_cats_sorted":["cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2025-03-06T06:24:51Z","title_canon_sha256":"d672b68085bad822bd3d4292fd0149c009539284d376af838a44ca3a0025ea33"},"schema_version":"1.0","source":{"id":"2503.04131","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.04131","created_at":"2026-07-05T10:25:29Z"},{"alias_kind":"arxiv_version","alias_value":"2503.04131v1","created_at":"2026-07-05T10:25:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.04131","created_at":"2026-07-05T10:25:29Z"},{"alias_kind":"pith_short_12","alias_value":"CQJMV3N7VLBP","created_at":"2026-07-05T10:25:29Z"},{"alias_kind":"pith_short_16","alias_value":"CQJMV3N7VLBP7COM","created_at":"2026-07-05T10:25:29Z"},{"alias_kind":"pith_short_8","alias_value":"CQJMV3N7","created_at":"2026-07-05T10:25:29Z"}],"graph_snapshots":[{"event_id":"sha256:9647e8ec998f2ac823bb8e1389734c4568ad4b4b06f2f1886b3643da22748aeb","target":"graph","created_at":"2026-07-05T10:25:29Z","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/2503.04131/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this work, we address the challenge of adaptive pediatric Left Ventricular Ejection Fraction (LVEF) assessment. While Test-time Training (TTT) approaches show promise for this task, they suffer from two significant limitations. Existing TTT works are primarily designed for classification tasks rather than continuous value regression, and they lack mechanisms to handle the quasi-periodic nature of cardiac signals. To tackle these issues, we propose a novel \\textbf{Q}uasi-\\textbf{P}eriodic \\textbf{A}daptive \\textbf{R}egression with \\textbf{T}est-time Training (Q-PART) framework. In the traini","authors_text":"Haoliang Li, Hui Liu, Jie Liu, Lichao Mou, Shiqi Wang, Tiexin Qin, Xiao Xiang Zhu, Yilei Shi","cross_cats":["cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2025-03-06T06:24:51Z","title":"Q-PART: Quasi-Periodic Adaptive Regression with Test-time Training for Pediatric Left Ventricular Ejection Fraction Regression"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.04131","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":"sha256:790fb93435b3cbb5e202c910678e9f983646c039631b228f92c3d081ffa59efe","target":"record","created_at":"2026-07-05T10:25:29Z","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":"6ff681cee4309f2eb35accb203502547e4c3b2e15bf5d8c531fbed7589e10f6a","cross_cats_sorted":["cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2025-03-06T06:24:51Z","title_canon_sha256":"d672b68085bad822bd3d4292fd0149c009539284d376af838a44ca3a0025ea33"},"schema_version":"1.0","source":{"id":"2503.04131","kind":"arxiv","version":1}},"canonical_sha256":"1412caedbfaac2ff89cc75f985fde2449938207cdec3048ad7a2fd73d6ea1f79","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1412caedbfaac2ff89cc75f985fde2449938207cdec3048ad7a2fd73d6ea1f79","first_computed_at":"2026-07-05T10:25:29.493575Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:25:29.493575Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SRhgCcVPAmzIKhcrY6bn5h4ckP2OKAeGzKVHADz8jWUTN64azYUJmaOw91L15fAk/u/sd/JUAldRB0S9O3KNBw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:25:29.494118Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.04131","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:790fb93435b3cbb5e202c910678e9f983646c039631b228f92c3d081ffa59efe","sha256:9647e8ec998f2ac823bb8e1389734c4568ad4b4b06f2f1886b3643da22748aeb"],"state_sha256":"b29cb39876cdbe6a09a1c2c38b6754fa8f126763c76b68499ec8f25227e55c08"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j/3CElf7wO6miG/+SNXJssbsuLJlv8oTKl5HkcvS66jluUgzYFeKaZpck4sB014h8M8T5jDofXOE9RwPw/o5BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T10:42:40.415863Z","bundle_sha256":"48d50c8878e885a7a6d4e401f4f289d41b515502a12ab114a47ea4df46b3d49d"}}