{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:TXEVOBIHMVX2NHLGJS7GBCPU37","short_pith_number":"pith:TXEVOBIH","canonical_record":{"source":{"id":"1705.05874","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2017-05-16T18:45:41Z","cross_cats_sorted":[],"title_canon_sha256":"0e0b7ea1d8c0e25a0085ded348657ca49522b6954bc89da2282cced240aaf048","abstract_canon_sha256":"3b46ce27790ac560d9630e185b58a65694908cd27bda49266fca9e22fe314d55"},"schema_version":"1.0"},"canonical_sha256":"9dc9570507656fa69d664cbe6089f4dff1106fde312a0063860b592b77e8ab57","source":{"kind":"arxiv","id":"1705.05874","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.05874","created_at":"2026-05-18T00:44:19Z"},{"alias_kind":"arxiv_version","alias_value":"1705.05874v1","created_at":"2026-05-18T00:44:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.05874","created_at":"2026-05-18T00:44:19Z"},{"alias_kind":"pith_short_12","alias_value":"TXEVOBIHMVX2","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"TXEVOBIHMVX2NHLG","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"TXEVOBIH","created_at":"2026-05-18T12:31:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:TXEVOBIHMVX2NHLGJS7GBCPU37","target":"record","payload":{"canonical_record":{"source":{"id":"1705.05874","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2017-05-16T18:45:41Z","cross_cats_sorted":[],"title_canon_sha256":"0e0b7ea1d8c0e25a0085ded348657ca49522b6954bc89da2282cced240aaf048","abstract_canon_sha256":"3b46ce27790ac560d9630e185b58a65694908cd27bda49266fca9e22fe314d55"},"schema_version":"1.0"},"canonical_sha256":"9dc9570507656fa69d664cbe6089f4dff1106fde312a0063860b592b77e8ab57","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:44:19.481564Z","signature_b64":"VMHsH/EZ+aPfQZTxg4na2TH9/oH4A9q1vZc3cpD+zzUQmJ3vx27CVl4QW8MnF74ddzJxxo7uuFG2YHgCOLvyBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9dc9570507656fa69d664cbe6089f4dff1106fde312a0063860b592b77e8ab57","last_reissued_at":"2026-05-18T00:44:19.481031Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:44:19.481031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.05874","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":"2026-05-18T00:44:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/9mT8ttbNsA2ZY1FdBv29LTUaBLVPrKr4vNE/MqlJyZ1ZNIryu6f/kac3IvUrML4QuK6MKntxFXNRjNDzltzDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T19:08:31.052891Z"},"content_sha256":"8954727297effaf22db705d67bbfff274bb27dcecc0df6dd762b91fef097dc24","schema_version":"1.0","event_id":"sha256:8954727297effaf22db705d67bbfff274bb27dcecc0df6dd762b91fef097dc24"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:TXEVOBIHMVX2NHLGJS7GBCPU37","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Time-frequency or time-scale representation fission and fusion rules","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SD","authors_text":"Arryon D. Tijsma, Coen Jonker, Ronald A.J. van Elburg","submitted_at":"2017-05-16T18:45:41Z","abstract_excerpt":"Time-frequency representations are important for the analysis of time series. We have developed an online time-series analysis system and equipped it to reliably handle re-alignment in the time-frequency plane. The system can deal with issues like invalid regions in time-frequency representations and discontinuities in data transmissions, making it suitable for on-line processing in real-world situations. In retrospect the whole problem can be considered to be a generalization of ideas present in overlap-and-add filtering, but then for time-frequency representations and including the calculati"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.05874","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":"2026-05-18T00:44:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WQjs6PS9CJZpsMZf5l6WpSF7hEE+njI2XQRnUJy9c40uVHnnV3IfxxaSWtNxn5cE7+YM1ji7AgXj4Ujw1j1bAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T19:08:31.053253Z"},"content_sha256":"86066a9378ee2ee3628ce0d155782d20efc61961fe3b0f1a0d7b2c8d41cb9065","schema_version":"1.0","event_id":"sha256:86066a9378ee2ee3628ce0d155782d20efc61961fe3b0f1a0d7b2c8d41cb9065"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TXEVOBIHMVX2NHLGJS7GBCPU37/bundle.json","state_url":"https://pith.science/pith/TXEVOBIHMVX2NHLGJS7GBCPU37/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TXEVOBIHMVX2NHLGJS7GBCPU37/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":"2026-06-07T19:08:31Z","links":{"resolver":"https://pith.science/pith/TXEVOBIHMVX2NHLGJS7GBCPU37","bundle":"https://pith.science/pith/TXEVOBIHMVX2NHLGJS7GBCPU37/bundle.json","state":"https://pith.science/pith/TXEVOBIHMVX2NHLGJS7GBCPU37/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TXEVOBIHMVX2NHLGJS7GBCPU37/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:TXEVOBIHMVX2NHLGJS7GBCPU37","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":"3b46ce27790ac560d9630e185b58a65694908cd27bda49266fca9e22fe314d55","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2017-05-16T18:45:41Z","title_canon_sha256":"0e0b7ea1d8c0e25a0085ded348657ca49522b6954bc89da2282cced240aaf048"},"schema_version":"1.0","source":{"id":"1705.05874","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.05874","created_at":"2026-05-18T00:44:19Z"},{"alias_kind":"arxiv_version","alias_value":"1705.05874v1","created_at":"2026-05-18T00:44:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.05874","created_at":"2026-05-18T00:44:19Z"},{"alias_kind":"pith_short_12","alias_value":"TXEVOBIHMVX2","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"TXEVOBIHMVX2NHLG","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"TXEVOBIH","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:86066a9378ee2ee3628ce0d155782d20efc61961fe3b0f1a0d7b2c8d41cb9065","target":"graph","created_at":"2026-05-18T00:44:19Z","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":"Time-frequency representations are important for the analysis of time series. We have developed an online time-series analysis system and equipped it to reliably handle re-alignment in the time-frequency plane. The system can deal with issues like invalid regions in time-frequency representations and discontinuities in data transmissions, making it suitable for on-line processing in real-world situations. In retrospect the whole problem can be considered to be a generalization of ideas present in overlap-and-add filtering, but then for time-frequency representations and including the calculati","authors_text":"Arryon D. Tijsma, Coen Jonker, Ronald A.J. van Elburg","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2017-05-16T18:45:41Z","title":"Time-frequency or time-scale representation fission and fusion rules"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.05874","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":"sha256:8954727297effaf22db705d67bbfff274bb27dcecc0df6dd762b91fef097dc24","target":"record","created_at":"2026-05-18T00:44:19Z","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":"3b46ce27790ac560d9630e185b58a65694908cd27bda49266fca9e22fe314d55","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2017-05-16T18:45:41Z","title_canon_sha256":"0e0b7ea1d8c0e25a0085ded348657ca49522b6954bc89da2282cced240aaf048"},"schema_version":"1.0","source":{"id":"1705.05874","kind":"arxiv","version":1}},"canonical_sha256":"9dc9570507656fa69d664cbe6089f4dff1106fde312a0063860b592b77e8ab57","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9dc9570507656fa69d664cbe6089f4dff1106fde312a0063860b592b77e8ab57","first_computed_at":"2026-05-18T00:44:19.481031Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:44:19.481031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VMHsH/EZ+aPfQZTxg4na2TH9/oH4A9q1vZc3cpD+zzUQmJ3vx27CVl4QW8MnF74ddzJxxo7uuFG2YHgCOLvyBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:44:19.481564Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.05874","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8954727297effaf22db705d67bbfff274bb27dcecc0df6dd762b91fef097dc24","sha256:86066a9378ee2ee3628ce0d155782d20efc61961fe3b0f1a0d7b2c8d41cb9065"],"state_sha256":"aab3585068f56a39cd9cd257ccfdfe8fb91f598dcd14f441a767a8997aa0f0cc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hOKcCf/h9sE34JhoYJiz+8WAoWIgKwazzcCrR8f6B5D6vTbXwpFHm2Wi8Ra3Y2R+D9ZDXJf/gt1964B8I8kMDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T19:08:31.055639Z","bundle_sha256":"5665e9c75fbca61df5e15fa958ed3e18e15fa83ba0a82b419ed0658e225ccaaf"}}