{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:BZOJC7SRUNIIV775GSYXAGY6G4","short_pith_number":"pith:BZOJC7SR","canonical_record":{"source":{"id":"1905.05570","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2019-05-14T12:55:42Z","cross_cats_sorted":["cs.AI","stat.ML"],"title_canon_sha256":"3a99244b396c4d78c85d9d9fd8b12f7bb059c2d2e315aa200cc42213425cf641","abstract_canon_sha256":"41f6d38ba9b14a34de306c1525df964b2837093bdf924551ca02c2a6f338bf03"},"schema_version":"1.0"},"canonical_sha256":"0e5c917e51a3508afffd34b1701b1e3739edbe76520c4822e0e876a381526fa0","source":{"kind":"arxiv","id":"1905.05570","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.05570","created_at":"2026-05-17T23:46:14Z"},{"alias_kind":"arxiv_version","alias_value":"1905.05570v1","created_at":"2026-05-17T23:46:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.05570","created_at":"2026-05-17T23:46:14Z"},{"alias_kind":"pith_short_12","alias_value":"BZOJC7SRUNII","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"BZOJC7SRUNIIV775","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"BZOJC7SR","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:BZOJC7SRUNIIV775GSYXAGY6G4","target":"record","payload":{"canonical_record":{"source":{"id":"1905.05570","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2019-05-14T12:55:42Z","cross_cats_sorted":["cs.AI","stat.ML"],"title_canon_sha256":"3a99244b396c4d78c85d9d9fd8b12f7bb059c2d2e315aa200cc42213425cf641","abstract_canon_sha256":"41f6d38ba9b14a34de306c1525df964b2837093bdf924551ca02c2a6f338bf03"},"schema_version":"1.0"},"canonical_sha256":"0e5c917e51a3508afffd34b1701b1e3739edbe76520c4822e0e876a381526fa0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:46:14.181029Z","signature_b64":"XVzJYCzY9r2X37FdIuWjLG93UExkS9NeyiZLzJCR++JS4cEpXwV2faJ2GwznsYMkg9YtJEl6OTcqdezE7KJnDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0e5c917e51a3508afffd34b1701b1e3739edbe76520c4822e0e876a381526fa0","last_reissued_at":"2026-05-17T23:46:14.180391Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:46:14.180391Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.05570","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":"2026-05-17T23:46:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tV5kL1LCMiAf8n0I/lY3QVAC33uYBBoK26EUKDxuV0ydio/qVWt4KYDUyVmP9mp8twdNQTXbz1wx+zsYKMa3Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T08:10:11.305679Z"},"content_sha256":"d97a036110626921a453d30c5c5e0a6e802c023d656c6fe9753fd435af28ca37","schema_version":"1.0","event_id":"sha256:d97a036110626921a453d30c5c5e0a6e802c023d656c6fe9753fd435af28ca37"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:BZOJC7SRUNIIV775GSYXAGY6G4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Imputing Missing Events in Continuous-Time Event Streams","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI","stat.ML"],"primary_cat":"cs.LG","authors_text":"Guanghui Qin, Hongyuan Mei, Jason Eisner","submitted_at":"2019-05-14T12:55:42Z","abstract_excerpt":"Events in the world may be caused by other, unobserved events. We consider sequences of events in continuous time. Given a probability model of complete sequences, we propose particle smoothing---a form of sequential importance sampling---to impute the missing events in an incomplete sequence. We develop a trainable family of proposal distributions based on a type of bidirectional continuous-time LSTM: Bidirectionality lets the proposals condition on future observations, not just on the past as in particle filtering. Our method can sample an ensemble of possible complete sequences (particles),"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.05570","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":"2026-05-17T23:46:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n8J7YIHfrJOWxEf7h3rT7tpF+P9S810UAKAj4q49G7GvxIWe6Kx1ZTKMW5s/uZ0POJJEfgnrBkD19GnzEl3VBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T08:10:11.306035Z"},"content_sha256":"57f059390e0729f6d607ae523472a28e386063ab47535f740584a6e46eb24044","schema_version":"1.0","event_id":"sha256:57f059390e0729f6d607ae523472a28e386063ab47535f740584a6e46eb24044"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BZOJC7SRUNIIV775GSYXAGY6G4/bundle.json","state_url":"https://pith.science/pith/BZOJC7SRUNIIV775GSYXAGY6G4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BZOJC7SRUNIIV775GSYXAGY6G4/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":"2026-05-30T08:10:11Z","links":{"resolver":"https://pith.science/pith/BZOJC7SRUNIIV775GSYXAGY6G4","bundle":"https://pith.science/pith/BZOJC7SRUNIIV775GSYXAGY6G4/bundle.json","state":"https://pith.science/pith/BZOJC7SRUNIIV775GSYXAGY6G4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BZOJC7SRUNIIV775GSYXAGY6G4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:BZOJC7SRUNIIV775GSYXAGY6G4","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":"41f6d38ba9b14a34de306c1525df964b2837093bdf924551ca02c2a6f338bf03","cross_cats_sorted":["cs.AI","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2019-05-14T12:55:42Z","title_canon_sha256":"3a99244b396c4d78c85d9d9fd8b12f7bb059c2d2e315aa200cc42213425cf641"},"schema_version":"1.0","source":{"id":"1905.05570","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.05570","created_at":"2026-05-17T23:46:14Z"},{"alias_kind":"arxiv_version","alias_value":"1905.05570v1","created_at":"2026-05-17T23:46:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.05570","created_at":"2026-05-17T23:46:14Z"},{"alias_kind":"pith_short_12","alias_value":"BZOJC7SRUNII","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"BZOJC7SRUNIIV775","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"BZOJC7SR","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:57f059390e0729f6d607ae523472a28e386063ab47535f740584a6e46eb24044","target":"graph","created_at":"2026-05-17T23:46:14Z","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":"Events in the world may be caused by other, unobserved events. We consider sequences of events in continuous time. Given a probability model of complete sequences, we propose particle smoothing---a form of sequential importance sampling---to impute the missing events in an incomplete sequence. We develop a trainable family of proposal distributions based on a type of bidirectional continuous-time LSTM: Bidirectionality lets the proposals condition on future observations, not just on the past as in particle filtering. Our method can sample an ensemble of possible complete sequences (particles),","authors_text":"Guanghui Qin, Hongyuan Mei, Jason Eisner","cross_cats":["cs.AI","stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2019-05-14T12:55:42Z","title":"Imputing Missing Events in Continuous-Time Event Streams"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.05570","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:d97a036110626921a453d30c5c5e0a6e802c023d656c6fe9753fd435af28ca37","target":"record","created_at":"2026-05-17T23:46:14Z","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":"41f6d38ba9b14a34de306c1525df964b2837093bdf924551ca02c2a6f338bf03","cross_cats_sorted":["cs.AI","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2019-05-14T12:55:42Z","title_canon_sha256":"3a99244b396c4d78c85d9d9fd8b12f7bb059c2d2e315aa200cc42213425cf641"},"schema_version":"1.0","source":{"id":"1905.05570","kind":"arxiv","version":1}},"canonical_sha256":"0e5c917e51a3508afffd34b1701b1e3739edbe76520c4822e0e876a381526fa0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0e5c917e51a3508afffd34b1701b1e3739edbe76520c4822e0e876a381526fa0","first_computed_at":"2026-05-17T23:46:14.180391Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:46:14.180391Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XVzJYCzY9r2X37FdIuWjLG93UExkS9NeyiZLzJCR++JS4cEpXwV2faJ2GwznsYMkg9YtJEl6OTcqdezE7KJnDg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:46:14.181029Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.05570","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d97a036110626921a453d30c5c5e0a6e802c023d656c6fe9753fd435af28ca37","sha256:57f059390e0729f6d607ae523472a28e386063ab47535f740584a6e46eb24044"],"state_sha256":"3d8bd39a437d12575c359c44d659786290a6721017e2fdc5cc16aa226de91e4e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JimDkjjX11MeTQvuqBipqmGVR/hbqsFar7ggPlkGAXFF1CXqovdHVuWdmX0iVD6SuNjDqs6K8Q1rCDYW6lvbBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T08:10:11.308222Z","bundle_sha256":"298a4b0aeabb017f833dd94b50d6703d86c58f1e56bc05195840e1651d846114"}}