{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:KJJ5C3JUSJVFOLB6BX7PCX7NRX","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":"e7625626617b4f7c2349260fa74fe29ed4ecd5fd2188e16e8de97401d8b0ed72","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-10-05T18:00:04Z","title_canon_sha256":"d356c312435e8a098ef995c889afd59dbb43c917ecfc28da49e764a6adcae81c"},"schema_version":"1.0","source":{"id":"2210.02471","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.02471","created_at":"2026-07-05T05:29:39Z"},{"alias_kind":"arxiv_version","alias_value":"2210.02471v3","created_at":"2026-07-05T05:29:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.02471","created_at":"2026-07-05T05:29:39Z"},{"alias_kind":"pith_short_12","alias_value":"KJJ5C3JUSJVF","created_at":"2026-07-05T05:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"KJJ5C3JUSJVFOLB6","created_at":"2026-07-05T05:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"KJJ5C3JU","created_at":"2026-07-05T05:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:17a6a3e8d63ed092ffee13c368f24b619e68b6e95d132a0bb4d641248d942ec0","target":"graph","created_at":"2026-07-05T05:29:39Z","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/2210.02471/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fast radio bursts (FRBs) are one of the most mysterious astronomical transients. Observationally, they can be classified into repeaters and apparently non-repeaters. However, due to the lack of continuous observations, some apparently repeaters may have been incorrectly recognized as non-repeaters. In a series of two papers, we intend to solve such problem with machine learning. In this second paper of the series, we focus on an array of unsupervised machine learning methods. We apply multiple unsupervised machine learning algorithms to the first CHIME/FRB catalog to learn their features and c","authors_text":"Bing Zhang, Jia-Ming Zhu-Ge, Jia-Wei Luo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-10-05T18:00:04Z","title":"Machine learning classification of CHIME fast radio bursts: II. Unsupervised Methods"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.02471","kind":"arxiv","version":3},"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:a0fe5a18b8a22a25c192dcbe4a856c59c8449aecc0b19cce9b818e113a144734","target":"record","created_at":"2026-07-05T05:29:39Z","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":"e7625626617b4f7c2349260fa74fe29ed4ecd5fd2188e16e8de97401d8b0ed72","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-10-05T18:00:04Z","title_canon_sha256":"d356c312435e8a098ef995c889afd59dbb43c917ecfc28da49e764a6adcae81c"},"schema_version":"1.0","source":{"id":"2210.02471","kind":"arxiv","version":3}},"canonical_sha256":"5253d16d34926a572c3e0dfef15fed8de48b75a9d67e6bf47e3913e1f138395a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5253d16d34926a572c3e0dfef15fed8de48b75a9d67e6bf47e3913e1f138395a","first_computed_at":"2026-07-05T05:29:39.532675Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:29:39.532675Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oZSzvmTL1+7mepsCzxYg4JIokZdqC0G9IIm36oMbnF+nKCwjv2Ea5Rj+RFpKDUKqEw9oBXN0N8LBTOc2hfhlBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:29:39.533127Z","signed_message":"canonical_sha256_bytes"},"source_id":"2210.02471","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0fe5a18b8a22a25c192dcbe4a856c59c8449aecc0b19cce9b818e113a144734","sha256:17a6a3e8d63ed092ffee13c368f24b619e68b6e95d132a0bb4d641248d942ec0"],"state_sha256":"f681fc1c4e2109857915cd9847d2e78412bf5ca3767f437d8476dfae0fdab7c5"}