{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:O7ADO3R4I37ZRLYGCKU3UXK3C4","short_pith_number":"pith:O7ADO3R4","canonical_record":{"source":{"id":"2103.12102","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-03-22T18:02:19Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"4de6f0df3d3a1850cbb2be87eb2d6d3d2209572d2b5347b53947c4401e0793a1","abstract_canon_sha256":"f4747be4ed7735a7961920fd41a97d15463ee28740b0919075736bb922a72410"},"schema_version":"1.0"},"canonical_sha256":"77c0376e3c46ff98af0612a9ba5d5b173926ca07be4cae785f8350a0728f8001","source":{"kind":"arxiv","id":"2103.12102","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.12102","created_at":"2026-07-05T03:06:22Z"},{"alias_kind":"arxiv_version","alias_value":"2103.12102v1","created_at":"2026-07-05T03:06:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.12102","created_at":"2026-07-05T03:06:22Z"},{"alias_kind":"pith_short_12","alias_value":"O7ADO3R4I37Z","created_at":"2026-07-05T03:06:22Z"},{"alias_kind":"pith_short_16","alias_value":"O7ADO3R4I37ZRLYG","created_at":"2026-07-05T03:06:22Z"},{"alias_kind":"pith_short_8","alias_value":"O7ADO3R4","created_at":"2026-07-05T03:06:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:O7ADO3R4I37ZRLYGCKU3UXK3C4","target":"record","payload":{"canonical_record":{"source":{"id":"2103.12102","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-03-22T18:02:19Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"4de6f0df3d3a1850cbb2be87eb2d6d3d2209572d2b5347b53947c4401e0793a1","abstract_canon_sha256":"f4747be4ed7735a7961920fd41a97d15463ee28740b0919075736bb922a72410"},"schema_version":"1.0"},"canonical_sha256":"77c0376e3c46ff98af0612a9ba5d5b173926ca07be4cae785f8350a0728f8001","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:06:22.126120Z","signature_b64":"Tj/b3/iKxm3VLA6zo6oFHmb4kknwnhHAWEiBnwBOZfZaEc4acwGe7t9gPYS/qMU5KYCDSqfG2gBc66ce21mdBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"77c0376e3c46ff98af0612a9ba5d5b173926ca07be4cae785f8350a0728f8001","last_reissued_at":"2026-07-05T03:06:22.125709Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:06:22.125709Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2103.12102","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":"2026-07-05T03:06:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ksKiPyQUT/b8i9NyQ+MUXC/Cd2hrD2N4ayAvulgyDuQd+scO2bEtPLObswStoW5TRzpKVXapA8obDlvSsoLIAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T05:34:03.586387Z"},"content_sha256":"d70fcf93708e498aeeee100f52d52eb375f7dbb39220f17f70e8ecee4d5e2f62","schema_version":"1.0","event_id":"sha256:d70fcf93708e498aeeee100f52d52eb375f7dbb39220f17f70e8ecee4d5e2f62"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:O7ADO3R4I37ZRLYGCKU3UXK3C4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Deep Learning Approach for Active Anomaly Detection of Extragalactic Transients","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"astro-ph.HE","authors_text":"Edo Berger, Gabriella Contardo, Griffin Hosseinzadeh, Joshua Yao-Yu Lin, Miles Cranmer, Shirley Ho, V. Ashley Villar","submitted_at":"2021-03-22T18:02:19Z","abstract_excerpt":"There is a shortage of multi-wavelength and spectroscopic followup capabilities given the number of transient and variable astrophysical events discovered through wide-field, optical surveys such as the upcoming Vera C. Rubin Observatory. From the haystack of potential science targets, astronomers must allocate scarce resources to study a selection of needles in real time. Here we present a variational recurrent autoencoder neural network to encode simulated Rubin Observatory extragalactic transient events using 1% of the PLAsTiCC dataset to train the autoencoder. Our unsupervised method uniqu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.12102","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/2103.12102/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":"2026-07-05T03:06:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Caz8D4K87k0y3Z15JV0Z9DF4Nl4NT8HmeNUKowJq8e6R+BMXAD5jUgu7ArxQAeixKpypAuonxA1UERomDW88CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T05:34:03.586966Z"},"content_sha256":"66a91959ef6aeb679fba7a4162616568dd1cd6e9374a43706a2121f0fc554f66","schema_version":"1.0","event_id":"sha256:66a91959ef6aeb679fba7a4162616568dd1cd6e9374a43706a2121f0fc554f66"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O7ADO3R4I37ZRLYGCKU3UXK3C4/bundle.json","state_url":"https://pith.science/pith/O7ADO3R4I37ZRLYGCKU3UXK3C4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O7ADO3R4I37ZRLYGCKU3UXK3C4/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":"2026-08-11T05:34:03Z","links":{"resolver":"https://pith.science/pith/O7ADO3R4I37ZRLYGCKU3UXK3C4","bundle":"https://pith.science/pith/O7ADO3R4I37ZRLYGCKU3UXK3C4/bundle.json","state":"https://pith.science/pith/O7ADO3R4I37ZRLYGCKU3UXK3C4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O7ADO3R4I37ZRLYGCKU3UXK3C4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:O7ADO3R4I37ZRLYGCKU3UXK3C4","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":"f4747be4ed7735a7961920fd41a97d15463ee28740b0919075736bb922a72410","cross_cats_sorted":["cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-03-22T18:02:19Z","title_canon_sha256":"4de6f0df3d3a1850cbb2be87eb2d6d3d2209572d2b5347b53947c4401e0793a1"},"schema_version":"1.0","source":{"id":"2103.12102","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.12102","created_at":"2026-07-05T03:06:22Z"},{"alias_kind":"arxiv_version","alias_value":"2103.12102v1","created_at":"2026-07-05T03:06:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.12102","created_at":"2026-07-05T03:06:22Z"},{"alias_kind":"pith_short_12","alias_value":"O7ADO3R4I37Z","created_at":"2026-07-05T03:06:22Z"},{"alias_kind":"pith_short_16","alias_value":"O7ADO3R4I37ZRLYG","created_at":"2026-07-05T03:06:22Z"},{"alias_kind":"pith_short_8","alias_value":"O7ADO3R4","created_at":"2026-07-05T03:06:22Z"}],"graph_snapshots":[{"event_id":"sha256:66a91959ef6aeb679fba7a4162616568dd1cd6e9374a43706a2121f0fc554f66","target":"graph","created_at":"2026-07-05T03:06:22Z","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/2103.12102/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"There is a shortage of multi-wavelength and spectroscopic followup capabilities given the number of transient and variable astrophysical events discovered through wide-field, optical surveys such as the upcoming Vera C. Rubin Observatory. From the haystack of potential science targets, astronomers must allocate scarce resources to study a selection of needles in real time. Here we present a variational recurrent autoencoder neural network to encode simulated Rubin Observatory extragalactic transient events using 1% of the PLAsTiCC dataset to train the autoencoder. Our unsupervised method uniqu","authors_text":"Edo Berger, Gabriella Contardo, Griffin Hosseinzadeh, Joshua Yao-Yu Lin, Miles Cranmer, Shirley Ho, V. Ashley Villar","cross_cats":["cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-03-22T18:02:19Z","title":"A Deep Learning Approach for Active Anomaly Detection of Extragalactic Transients"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.12102","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:d70fcf93708e498aeeee100f52d52eb375f7dbb39220f17f70e8ecee4d5e2f62","target":"record","created_at":"2026-07-05T03:06:22Z","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":"f4747be4ed7735a7961920fd41a97d15463ee28740b0919075736bb922a72410","cross_cats_sorted":["cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-03-22T18:02:19Z","title_canon_sha256":"4de6f0df3d3a1850cbb2be87eb2d6d3d2209572d2b5347b53947c4401e0793a1"},"schema_version":"1.0","source":{"id":"2103.12102","kind":"arxiv","version":1}},"canonical_sha256":"77c0376e3c46ff98af0612a9ba5d5b173926ca07be4cae785f8350a0728f8001","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"77c0376e3c46ff98af0612a9ba5d5b173926ca07be4cae785f8350a0728f8001","first_computed_at":"2026-07-05T03:06:22.125709Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:06:22.125709Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Tj/b3/iKxm3VLA6zo6oFHmb4kknwnhHAWEiBnwBOZfZaEc4acwGe7t9gPYS/qMU5KYCDSqfG2gBc66ce21mdBg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:06:22.126120Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.12102","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d70fcf93708e498aeeee100f52d52eb375f7dbb39220f17f70e8ecee4d5e2f62","sha256:66a91959ef6aeb679fba7a4162616568dd1cd6e9374a43706a2121f0fc554f66"],"state_sha256":"0643f2996956e3b2df441a21a492d6fca6b7a6c0d94432b1f4e1f3967a2c2a0f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qAXUlrwkwsp4j3QRqb78HTnbF76S1EszGChOZ7K4yHKmJzPNAvaRCxVHqVlfQ+wbhoEu+XVraNUJKD/hW281Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T05:34:03.592964Z","bundle_sha256":"f769ca8aab3572092e7308b5af674474e68e2b427435de1a1c2bb1ea4b62104f"}}