{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:VC2H4FRLBKOVTEGWZSHC7NINTE","short_pith_number":"pith:VC2H4FRL","canonical_record":{"source":{"id":"1808.03587","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-08-10T15:26:11Z","cross_cats_sorted":[],"title_canon_sha256":"437e1b8fa8e74cdf9e910a00c017e4cffc7a5974090c7b62a248fe5bd77a0a5c","abstract_canon_sha256":"074c3a55c9e00acb89d0172240945dbdfa6bc215955c67ecd8bf4eeb64cd9414"},"schema_version":"1.0"},"canonical_sha256":"a8b47e162b0a9d5990d6cc8e2fb50d9937bbcfbf0025bb46857b3bed81ed20e4","source":{"kind":"arxiv","id":"1808.03587","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.03587","created_at":"2026-05-18T00:08:24Z"},{"alias_kind":"arxiv_version","alias_value":"1808.03587v1","created_at":"2026-05-18T00:08:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.03587","created_at":"2026-05-18T00:08:24Z"},{"alias_kind":"pith_short_12","alias_value":"VC2H4FRLBKOV","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VC2H4FRLBKOVTEGW","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VC2H4FRL","created_at":"2026-05-18T12:32:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:VC2H4FRLBKOVTEGWZSHC7NINTE","target":"record","payload":{"canonical_record":{"source":{"id":"1808.03587","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-08-10T15:26:11Z","cross_cats_sorted":[],"title_canon_sha256":"437e1b8fa8e74cdf9e910a00c017e4cffc7a5974090c7b62a248fe5bd77a0a5c","abstract_canon_sha256":"074c3a55c9e00acb89d0172240945dbdfa6bc215955c67ecd8bf4eeb64cd9414"},"schema_version":"1.0"},"canonical_sha256":"a8b47e162b0a9d5990d6cc8e2fb50d9937bbcfbf0025bb46857b3bed81ed20e4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:08:24.609648Z","signature_b64":"JhrS6B74p3rj40+IL5b0tFzwvL+rPep5vjeU6I0lhH/a5e+J1XRb8Z66eBp0asjNmo52We1GejteY0BSWryCAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a8b47e162b0a9d5990d6cc8e2fb50d9937bbcfbf0025bb46857b3bed81ed20e4","last_reissued_at":"2026-05-18T00:08:24.608989Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:08:24.608989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.03587","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":"2026-05-18T00:08:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ORKgeLO83MOeyB2jesHteC1Cqm5g3mxsaichHVYHxQdfjE6ZSHFnAyLJeEQg6nlvH8uweN2xhjdo8ag2w8d4Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:51:37.758168Z"},"content_sha256":"5e13a0637a229c320ddcbfdf0d75acec78e417713db4de100b0a16c2d6fda1d1","schema_version":"1.0","event_id":"sha256:5e13a0637a229c320ddcbfdf0d75acec78e417713db4de100b0a16c2d6fda1d1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:VC2H4FRLBKOVTEGWZSHC7NINTE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A simplified convolutional sparse filter for impulsive signature enhancement and its application to the prognostic of rotating machinery","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"stat.AP","authors_text":"Haoshu Cai, Jay Lee, Ming Zhao, Xiaodong Jia","submitted_at":"2018-08-10T15:26:11Z","abstract_excerpt":"Impulsive signature enhancement (ISE) is an important topic in the monitoring of rotating machinery and many different methods have been proposed. Even though, the topic of how to leverage these ISE techniques to improve the data quality in terms of prognostics and health management (PHM) still needs to be investigated. In this work, a systematic view for data quality enhancement is presented. The data quality issues for the prognostics and health management (PHM) of rotating machinery are identified, and the major steps to enhance data quality are organized. Based on this, a novel ISE algorit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.03587","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":"2026-05-18T00:08:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"urpcEsuUg1J0BUR6rY732gnhzzAvXtGdrAbBU9DYthQvafAGi9HKuIAsditjwr+7upkXPRgjrCHQ4jvsSpoODw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:51:37.758852Z"},"content_sha256":"514131694b989163753b9c443cc9274ea37ead6ea833b2ec808689a849960543","schema_version":"1.0","event_id":"sha256:514131694b989163753b9c443cc9274ea37ead6ea833b2ec808689a849960543"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VC2H4FRLBKOVTEGWZSHC7NINTE/bundle.json","state_url":"https://pith.science/pith/VC2H4FRLBKOVTEGWZSHC7NINTE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VC2H4FRLBKOVTEGWZSHC7NINTE/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":"2026-05-27T15:51:37Z","links":{"resolver":"https://pith.science/pith/VC2H4FRLBKOVTEGWZSHC7NINTE","bundle":"https://pith.science/pith/VC2H4FRLBKOVTEGWZSHC7NINTE/bundle.json","state":"https://pith.science/pith/VC2H4FRLBKOVTEGWZSHC7NINTE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VC2H4FRLBKOVTEGWZSHC7NINTE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:VC2H4FRLBKOVTEGWZSHC7NINTE","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":"074c3a55c9e00acb89d0172240945dbdfa6bc215955c67ecd8bf4eeb64cd9414","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-08-10T15:26:11Z","title_canon_sha256":"437e1b8fa8e74cdf9e910a00c017e4cffc7a5974090c7b62a248fe5bd77a0a5c"},"schema_version":"1.0","source":{"id":"1808.03587","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.03587","created_at":"2026-05-18T00:08:24Z"},{"alias_kind":"arxiv_version","alias_value":"1808.03587v1","created_at":"2026-05-18T00:08:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.03587","created_at":"2026-05-18T00:08:24Z"},{"alias_kind":"pith_short_12","alias_value":"VC2H4FRLBKOV","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VC2H4FRLBKOVTEGW","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VC2H4FRL","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:514131694b989163753b9c443cc9274ea37ead6ea833b2ec808689a849960543","target":"graph","created_at":"2026-05-18T00:08:24Z","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":"Impulsive signature enhancement (ISE) is an important topic in the monitoring of rotating machinery and many different methods have been proposed. Even though, the topic of how to leverage these ISE techniques to improve the data quality in terms of prognostics and health management (PHM) still needs to be investigated. In this work, a systematic view for data quality enhancement is presented. The data quality issues for the prognostics and health management (PHM) of rotating machinery are identified, and the major steps to enhance data quality are organized. Based on this, a novel ISE algorit","authors_text":"Haoshu Cai, Jay Lee, Ming Zhao, Xiaodong Jia","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-08-10T15:26:11Z","title":"A simplified convolutional sparse filter for impulsive signature enhancement and its application to the prognostic of rotating machinery"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.03587","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":"sha256:5e13a0637a229c320ddcbfdf0d75acec78e417713db4de100b0a16c2d6fda1d1","target":"record","created_at":"2026-05-18T00:08:24Z","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":"074c3a55c9e00acb89d0172240945dbdfa6bc215955c67ecd8bf4eeb64cd9414","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2018-08-10T15:26:11Z","title_canon_sha256":"437e1b8fa8e74cdf9e910a00c017e4cffc7a5974090c7b62a248fe5bd77a0a5c"},"schema_version":"1.0","source":{"id":"1808.03587","kind":"arxiv","version":1}},"canonical_sha256":"a8b47e162b0a9d5990d6cc8e2fb50d9937bbcfbf0025bb46857b3bed81ed20e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a8b47e162b0a9d5990d6cc8e2fb50d9937bbcfbf0025bb46857b3bed81ed20e4","first_computed_at":"2026-05-18T00:08:24.608989Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:08:24.608989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JhrS6B74p3rj40+IL5b0tFzwvL+rPep5vjeU6I0lhH/a5e+J1XRb8Z66eBp0asjNmo52We1GejteY0BSWryCAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:08:24.609648Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.03587","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5e13a0637a229c320ddcbfdf0d75acec78e417713db4de100b0a16c2d6fda1d1","sha256:514131694b989163753b9c443cc9274ea37ead6ea833b2ec808689a849960543"],"state_sha256":"74c586e5fd5b1b19e174959d1e6db64aa2f180057910b711c2eae4715f5b3ff2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u3J8ft6kgo34gZM8BxNiSdijjJ/ncKC0qndJVjnt7Y/Evo58GUcrTkvB8nGyaZWU3VfGMN6ObYevUq7jtfqjDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T15:51:37.762854Z","bundle_sha256":"032a298ede2a8dea0523335e944508a038393206204788f6c5e7f7174395ecb3"}}