{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:V6LET5N25AQHFFYGEDDAFM7HAU","short_pith_number":"pith:V6LET5N2","canonical_record":{"source":{"id":"2009.00582","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2020-09-01T17:12:46Z","cross_cats_sorted":["cs.NA"],"title_canon_sha256":"4405a77cb7c0d2c303a9b0fb7edc0162cb06a6b8754ea4e4a17a047d682812f3","abstract_canon_sha256":"4894bd8b64308fc62abe7e9163e5cb0ffb5b463a00216dd75af5143f50c4ed5e"},"schema_version":"1.0"},"canonical_sha256":"af9649f5bae82072970620c602b3e70518006c61e41682cd1c608418c7a22ab1","source":{"kind":"arxiv","id":"2009.00582","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.00582","created_at":"2026-07-05T04:41:08Z"},{"alias_kind":"arxiv_version","alias_value":"2009.00582v2","created_at":"2026-07-05T04:41:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.00582","created_at":"2026-07-05T04:41:08Z"},{"alias_kind":"pith_short_12","alias_value":"V6LET5N25AQH","created_at":"2026-07-05T04:41:08Z"},{"alias_kind":"pith_short_16","alias_value":"V6LET5N25AQHFFYG","created_at":"2026-07-05T04:41:08Z"},{"alias_kind":"pith_short_8","alias_value":"V6LET5N2","created_at":"2026-07-05T04:41:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:V6LET5N25AQHFFYGEDDAFM7HAU","target":"record","payload":{"canonical_record":{"source":{"id":"2009.00582","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2020-09-01T17:12:46Z","cross_cats_sorted":["cs.NA"],"title_canon_sha256":"4405a77cb7c0d2c303a9b0fb7edc0162cb06a6b8754ea4e4a17a047d682812f3","abstract_canon_sha256":"4894bd8b64308fc62abe7e9163e5cb0ffb5b463a00216dd75af5143f50c4ed5e"},"schema_version":"1.0"},"canonical_sha256":"af9649f5bae82072970620c602b3e70518006c61e41682cd1c608418c7a22ab1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:41:08.974816Z","signature_b64":"6ZeI33FVLbbRYSyLmNKw8Vhafiizm16/bgTHC2uan7TZZJ8Vuvwb7Gvzqu7olKYSgPuaFTQzT1ppHQZEwggdDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af9649f5bae82072970620c602b3e70518006c61e41682cd1c608418c7a22ab1","last_reissued_at":"2026-07-05T04:41:08.974444Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:41:08.974444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2009.00582","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":"2026-07-05T04:41:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TkpY8T9gteBTTRAzbFWY7iwhOe4qwG/GQipgJJOL42o4+fNJO+rILcXbDya9kimvHcMCRuT4Mk/sQD0Bra+EBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-24T13:30:33.960524Z"},"content_sha256":"789237139f91171dc56b905b619c2a7639842dd2f22e7eed8edd010ce46dc6fa","schema_version":"1.0","event_id":"sha256:789237139f91171dc56b905b619c2a7639842dd2f22e7eed8edd010ce46dc6fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:V6LET5N25AQHFFYGEDDAFM7HAU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Conjectures on spectral properties of ALIF algorithm","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NA"],"primary_cat":"math.NA","authors_text":"Antonio Cicone, Giovanni Barbarino","submitted_at":"2020-09-01T17:12:46Z","abstract_excerpt":"A new decomposition method for nonstationary signals, named Adaptive Local Iterative Filtering (ALIF), has been recently proposed in the literature. Given its similarity with the Empirical Mode Decomposition (EMD) and its more rigorous mathematical structure, which makes feasible to study its convergence compared to EMD, ALIF has really good potentiality to become a reference method in the analysis of signals containing strong nonstationary components, like chirps, multipaths and whistles, in many applications, like Physics, Engineering, Medicine and Finance, to name a few.\n  In [11], the auth"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.00582","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2009.00582/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":"2026-07-05T04:41:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PlOfKrEcHndACSNFTXLU4Sezd2V9vfQsCTiU1oDMKrj9P3DsauHraRlVRP+IzSpseFhcOL+9IIBeudHkzeyvCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-24T13:30:33.960901Z"},"content_sha256":"0308e4379018193c6c30b9249254351ff9cc9afce3d234d0005ace53760c5609","schema_version":"1.0","event_id":"sha256:0308e4379018193c6c30b9249254351ff9cc9afce3d234d0005ace53760c5609"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V6LET5N25AQHFFYGEDDAFM7HAU/bundle.json","state_url":"https://pith.science/pith/V6LET5N25AQHFFYGEDDAFM7HAU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V6LET5N25AQHFFYGEDDAFM7HAU/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":"2026-07-24T13:30:33Z","links":{"resolver":"https://pith.science/pith/V6LET5N25AQHFFYGEDDAFM7HAU","bundle":"https://pith.science/pith/V6LET5N25AQHFFYGEDDAFM7HAU/bundle.json","state":"https://pith.science/pith/V6LET5N25AQHFFYGEDDAFM7HAU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V6LET5N25AQHFFYGEDDAFM7HAU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:V6LET5N25AQHFFYGEDDAFM7HAU","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":"4894bd8b64308fc62abe7e9163e5cb0ffb5b463a00216dd75af5143f50c4ed5e","cross_cats_sorted":["cs.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2020-09-01T17:12:46Z","title_canon_sha256":"4405a77cb7c0d2c303a9b0fb7edc0162cb06a6b8754ea4e4a17a047d682812f3"},"schema_version":"1.0","source":{"id":"2009.00582","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.00582","created_at":"2026-07-05T04:41:08Z"},{"alias_kind":"arxiv_version","alias_value":"2009.00582v2","created_at":"2026-07-05T04:41:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.00582","created_at":"2026-07-05T04:41:08Z"},{"alias_kind":"pith_short_12","alias_value":"V6LET5N25AQH","created_at":"2026-07-05T04:41:08Z"},{"alias_kind":"pith_short_16","alias_value":"V6LET5N25AQHFFYG","created_at":"2026-07-05T04:41:08Z"},{"alias_kind":"pith_short_8","alias_value":"V6LET5N2","created_at":"2026-07-05T04:41:08Z"}],"graph_snapshots":[{"event_id":"sha256:0308e4379018193c6c30b9249254351ff9cc9afce3d234d0005ace53760c5609","target":"graph","created_at":"2026-07-05T04:41:08Z","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/2009.00582/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A new decomposition method for nonstationary signals, named Adaptive Local Iterative Filtering (ALIF), has been recently proposed in the literature. Given its similarity with the Empirical Mode Decomposition (EMD) and its more rigorous mathematical structure, which makes feasible to study its convergence compared to EMD, ALIF has really good potentiality to become a reference method in the analysis of signals containing strong nonstationary components, like chirps, multipaths and whistles, in many applications, like Physics, Engineering, Medicine and Finance, to name a few.\n  In [11], the auth","authors_text":"Antonio Cicone, Giovanni Barbarino","cross_cats":["cs.NA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2020-09-01T17:12:46Z","title":"Conjectures on spectral properties of ALIF algorithm"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.00582","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":"sha256:789237139f91171dc56b905b619c2a7639842dd2f22e7eed8edd010ce46dc6fa","target":"record","created_at":"2026-07-05T04:41:08Z","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":"4894bd8b64308fc62abe7e9163e5cb0ffb5b463a00216dd75af5143f50c4ed5e","cross_cats_sorted":["cs.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2020-09-01T17:12:46Z","title_canon_sha256":"4405a77cb7c0d2c303a9b0fb7edc0162cb06a6b8754ea4e4a17a047d682812f3"},"schema_version":"1.0","source":{"id":"2009.00582","kind":"arxiv","version":2}},"canonical_sha256":"af9649f5bae82072970620c602b3e70518006c61e41682cd1c608418c7a22ab1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af9649f5bae82072970620c602b3e70518006c61e41682cd1c608418c7a22ab1","first_computed_at":"2026-07-05T04:41:08.974444Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:41:08.974444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6ZeI33FVLbbRYSyLmNKw8Vhafiizm16/bgTHC2uan7TZZJ8Vuvwb7Gvzqu7olKYSgPuaFTQzT1ppHQZEwggdDA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:41:08.974816Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.00582","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:789237139f91171dc56b905b619c2a7639842dd2f22e7eed8edd010ce46dc6fa","sha256:0308e4379018193c6c30b9249254351ff9cc9afce3d234d0005ace53760c5609"],"state_sha256":"48f290304f8525ce1be02f35647db8a96785b0bb8bf28a78e1bab9089074b284"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V7tNvWGTtSVtXgfIEL8PQCkzhHmETqmsAR1jotnlkDS1mb37ho/obxYl01J/HXpJOZ9A3Y4Eab3Q/S2EXy1BBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-24T13:30:33.963261Z","bundle_sha256":"27dcb43b0be59c76ad6dc005f749be360653b1b3582ca4a2c209aca8cf63480b"}}