{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:G34VJ5IMQ7LITRMXOZD67GRLGC","short_pith_number":"pith:G34VJ5IM","canonical_record":{"source":{"id":"2502.20857","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2025-02-28T08:55:20Z","cross_cats_sorted":["cs.SD"],"title_canon_sha256":"69c9d5a1fa209c512f15b8b9fcd8fef7d29e0462fc9f3c7a8794259daffe71a8","abstract_canon_sha256":"f91b4ec531880623f29059573153e6817ad3f8da4cc93a966a29e5b8c45d5814"},"schema_version":"1.0"},"canonical_sha256":"36f954f50c87d689c5977647ef9a2b309090f8eb92df73fb48b422612540f355","source":{"kind":"arxiv","id":"2502.20857","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.20857","created_at":"2026-07-05T10:21:41Z"},{"alias_kind":"arxiv_version","alias_value":"2502.20857v1","created_at":"2026-07-05T10:21:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.20857","created_at":"2026-07-05T10:21:41Z"},{"alias_kind":"pith_short_12","alias_value":"G34VJ5IMQ7LI","created_at":"2026-07-05T10:21:41Z"},{"alias_kind":"pith_short_16","alias_value":"G34VJ5IMQ7LITRMX","created_at":"2026-07-05T10:21:41Z"},{"alias_kind":"pith_short_8","alias_value":"G34VJ5IM","created_at":"2026-07-05T10:21:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:G34VJ5IMQ7LITRMXOZD67GRLGC","target":"record","payload":{"canonical_record":{"source":{"id":"2502.20857","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2025-02-28T08:55:20Z","cross_cats_sorted":["cs.SD"],"title_canon_sha256":"69c9d5a1fa209c512f15b8b9fcd8fef7d29e0462fc9f3c7a8794259daffe71a8","abstract_canon_sha256":"f91b4ec531880623f29059573153e6817ad3f8da4cc93a966a29e5b8c45d5814"},"schema_version":"1.0"},"canonical_sha256":"36f954f50c87d689c5977647ef9a2b309090f8eb92df73fb48b422612540f355","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:21:41.191220Z","signature_b64":"GW0cGLWpTpqr9aTQ7Lznx78FyCOBd25yb4NUKhUnWIgiX3tsle77fxv20zbxNk571t29bfFrpatuTJgIrJqcBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"36f954f50c87d689c5977647ef9a2b309090f8eb92df73fb48b422612540f355","last_reissued_at":"2026-07-05T10:21:41.190753Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:21:41.190753Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.20857","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":"2026-07-05T10:21:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MbOs00nixd/ZnV6NX+H5P5HPE8rBdh4hRDsBE+HD7x71t0Ga2V0wfuZf9Ib8kwfBhWO9CMjA21r2CjaWSoo7Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T08:33:03.833922Z"},"content_sha256":"b725c7476650c87a4349482b22a1a3e85673923620bcbcba3ae4e45df05f9a34","schema_version":"1.0","event_id":"sha256:b725c7476650c87a4349482b22a1a3e85673923620bcbcba3ae4e45df05f9a34"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:G34VJ5IMQ7LITRMXOZD67GRLGC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"JiTTER: Jigsaw Temporal Transformer for Event Reconstruction for Self-Supervised Sound Event Detection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SD"],"primary_cat":"eess.AS","authors_text":"Hyeonuk Nam, Yong-Hwa Park","submitted_at":"2025-02-28T08:55:20Z","abstract_excerpt":"Sound event detection (SED) has significantly benefited from self-supervised learning (SSL) approaches, particularly masked audio transformer for SED (MAT-SED), which leverages masked block prediction to reconstruct missing audio segments. However, while effective in capturing global dependencies, masked block prediction disrupts transient sound events and lacks explicit enforcement of temporal order, making it less suitable for fine-grained event boundary detection. To address these limitations, we propose JiTTER (Jigsaw Temporal Transformer for Event Reconstruction), an SSL framework designe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.20857","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/2502.20857/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":"2026-07-05T10:21:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5aj6wzYOOglgliYYapaSTXubX+8cNlDNOrDKolBeowi1a6y5jtD9NTJhBEAgr7yP19xQjrTYzDtNxTkTtCQ4AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T08:33:03.834442Z"},"content_sha256":"a7c20f6c9983c74f431fe908af77d76712371166fa8b606ff30c46d5b0a4164a","schema_version":"1.0","event_id":"sha256:a7c20f6c9983c74f431fe908af77d76712371166fa8b606ff30c46d5b0a4164a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G34VJ5IMQ7LITRMXOZD67GRLGC/bundle.json","state_url":"https://pith.science/pith/G34VJ5IMQ7LITRMXOZD67GRLGC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G34VJ5IMQ7LITRMXOZD67GRLGC/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":"2026-08-06T08:33:03Z","links":{"resolver":"https://pith.science/pith/G34VJ5IMQ7LITRMXOZD67GRLGC","bundle":"https://pith.science/pith/G34VJ5IMQ7LITRMXOZD67GRLGC/bundle.json","state":"https://pith.science/pith/G34VJ5IMQ7LITRMXOZD67GRLGC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G34VJ5IMQ7LITRMXOZD67GRLGC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:G34VJ5IMQ7LITRMXOZD67GRLGC","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":"f91b4ec531880623f29059573153e6817ad3f8da4cc93a966a29e5b8c45d5814","cross_cats_sorted":["cs.SD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2025-02-28T08:55:20Z","title_canon_sha256":"69c9d5a1fa209c512f15b8b9fcd8fef7d29e0462fc9f3c7a8794259daffe71a8"},"schema_version":"1.0","source":{"id":"2502.20857","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.20857","created_at":"2026-07-05T10:21:41Z"},{"alias_kind":"arxiv_version","alias_value":"2502.20857v1","created_at":"2026-07-05T10:21:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.20857","created_at":"2026-07-05T10:21:41Z"},{"alias_kind":"pith_short_12","alias_value":"G34VJ5IMQ7LI","created_at":"2026-07-05T10:21:41Z"},{"alias_kind":"pith_short_16","alias_value":"G34VJ5IMQ7LITRMX","created_at":"2026-07-05T10:21:41Z"},{"alias_kind":"pith_short_8","alias_value":"G34VJ5IM","created_at":"2026-07-05T10:21:41Z"}],"graph_snapshots":[{"event_id":"sha256:a7c20f6c9983c74f431fe908af77d76712371166fa8b606ff30c46d5b0a4164a","target":"graph","created_at":"2026-07-05T10:21:41Z","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/2502.20857/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Sound event detection (SED) has significantly benefited from self-supervised learning (SSL) approaches, particularly masked audio transformer for SED (MAT-SED), which leverages masked block prediction to reconstruct missing audio segments. However, while effective in capturing global dependencies, masked block prediction disrupts transient sound events and lacks explicit enforcement of temporal order, making it less suitable for fine-grained event boundary detection. To address these limitations, we propose JiTTER (Jigsaw Temporal Transformer for Event Reconstruction), an SSL framework designe","authors_text":"Hyeonuk Nam, Yong-Hwa Park","cross_cats":["cs.SD"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2025-02-28T08:55:20Z","title":"JiTTER: Jigsaw Temporal Transformer for Event Reconstruction for Self-Supervised Sound Event Detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.20857","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:b725c7476650c87a4349482b22a1a3e85673923620bcbcba3ae4e45df05f9a34","target":"record","created_at":"2026-07-05T10:21:41Z","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":"f91b4ec531880623f29059573153e6817ad3f8da4cc93a966a29e5b8c45d5814","cross_cats_sorted":["cs.SD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2025-02-28T08:55:20Z","title_canon_sha256":"69c9d5a1fa209c512f15b8b9fcd8fef7d29e0462fc9f3c7a8794259daffe71a8"},"schema_version":"1.0","source":{"id":"2502.20857","kind":"arxiv","version":1}},"canonical_sha256":"36f954f50c87d689c5977647ef9a2b309090f8eb92df73fb48b422612540f355","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"36f954f50c87d689c5977647ef9a2b309090f8eb92df73fb48b422612540f355","first_computed_at":"2026-07-05T10:21:41.190753Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:21:41.190753Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GW0cGLWpTpqr9aTQ7Lznx78FyCOBd25yb4NUKhUnWIgiX3tsle77fxv20zbxNk571t29bfFrpatuTJgIrJqcBA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:21:41.191220Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.20857","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b725c7476650c87a4349482b22a1a3e85673923620bcbcba3ae4e45df05f9a34","sha256:a7c20f6c9983c74f431fe908af77d76712371166fa8b606ff30c46d5b0a4164a"],"state_sha256":"85db98d675913b7ab62ce0497c428ccd5a1eb3c5e830c61d5099ebe1384fa815"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KwYJ2en2ubYtTju6CF4QXJy49ayb3pDXixjhKOlvaNOhTgi5o+IbFFs1WNMDiqLEypsPmemWzE9/hB0pRcC1DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T08:33:03.838169Z","bundle_sha256":"c06d00f54d6bcbe5c31f568474d2be1fe73f03cfde8d87fdc7eabe8a8aba74e6"}}