{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:GZQRLMHM6HTGZ7Z5HQJWRCMSGW","short_pith_number":"pith:GZQRLMHM","canonical_record":{"source":{"id":"2012.02594","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2020-11-15T10:07:19Z","cross_cats_sorted":["cs.IR","cs.LG"],"title_canon_sha256":"5d4bb6311d8d70f69e1d83215e4b1e82344a74cb88da7721351019b5d277f96b","abstract_canon_sha256":"6969e49acb9eca29a9e9b07646a8062d46c6c2f2d8c3a93d7d6c2cfbf511a42f"},"schema_version":"1.0"},"canonical_sha256":"366115b0ecf1e66cff3d3c1368899235a196509e1bca4f3d59923691082715ae","source":{"kind":"arxiv","id":"2012.02594","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.02594","created_at":"2026-07-05T01:57:08Z"},{"alias_kind":"arxiv_version","alias_value":"2012.02594v1","created_at":"2026-07-05T01:57:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.02594","created_at":"2026-07-05T01:57:08Z"},{"alias_kind":"pith_short_12","alias_value":"GZQRLMHM6HTG","created_at":"2026-07-05T01:57:08Z"},{"alias_kind":"pith_short_16","alias_value":"GZQRLMHM6HTGZ7Z5","created_at":"2026-07-05T01:57:08Z"},{"alias_kind":"pith_short_8","alias_value":"GZQRLMHM","created_at":"2026-07-05T01:57:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:GZQRLMHM6HTGZ7Z5HQJWRCMSGW","target":"record","payload":{"canonical_record":{"source":{"id":"2012.02594","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2020-11-15T10:07:19Z","cross_cats_sorted":["cs.IR","cs.LG"],"title_canon_sha256":"5d4bb6311d8d70f69e1d83215e4b1e82344a74cb88da7721351019b5d277f96b","abstract_canon_sha256":"6969e49acb9eca29a9e9b07646a8062d46c6c2f2d8c3a93d7d6c2cfbf511a42f"},"schema_version":"1.0"},"canonical_sha256":"366115b0ecf1e66cff3d3c1368899235a196509e1bca4f3d59923691082715ae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:57:08.293506Z","signature_b64":"4LUA62BgYXzGMBaJZ/UMUbJaAQfV9+nVNA/TLfrAzdqzjt4MkpDFcuFzAGW831yobXWtdlOwQGMFcGSgLYHXCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"366115b0ecf1e66cff3d3c1368899235a196509e1bca4f3d59923691082715ae","last_reissued_at":"2026-07-05T01:57:08.293093Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:57:08.293093Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2012.02594","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":"2026-07-05T01:57:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8BlQ0T7DHH0NxuCCoeKFas1vWXA/0c2GJTuHF6nhf65csRP3mJtTTeOrnOAs6TDL1El4pBmd3hCFpNrad1SyCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-21T03:30:48.450717Z"},"content_sha256":"e5a88f7c2f02726ad214cb4b4597250ee0a5066afbf0bb6d1e7047d1e1a1d854","schema_version":"1.0","event_id":"sha256:e5a88f7c2f02726ad214cb4b4597250ee0a5066afbf0bb6d1e7047d1e1a1d854"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:GZQRLMHM6HTGZ7Z5HQJWRCMSGW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"To Schedule or not to Schedule: Extracting Task Specific Temporal Entities and Associated Negation Constraints","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IR","cs.LG"],"primary_cat":"cs.CL","authors_text":"Barun Patra, Chala Fufa, Charles Lee, Pamela Bhattacharya","submitted_at":"2020-11-15T10:07:19Z","abstract_excerpt":"State of the art research for date-time entity extraction from text is task agnostic. Consequently, while the methods proposed in literature perform well for generic date-time extraction from texts, they don't fare as well on task specific date-time entity extraction where only a subset of the date-time entities present in the text are pertinent to solving the task. Furthermore, some tasks require identifying negation constraints associated with the date-time entities to correctly reason over time. We showcase a novel model for extracting task-specific date-time entities along with their negat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.02594","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/2012.02594/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":"2026-07-05T01:57:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eoxBEsBgOxkNJzjBpRQkzXyAP70PJqF1OaEGAqBhBv84XdeJRW3v2y/4RWQcEBz39UVY20Y6tJaB3nZdxxjmDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-21T03:30:48.451101Z"},"content_sha256":"67537c5ffb6d3d9602184522227e2581dd61b50b0583a18d08255d9a4b5147e7","schema_version":"1.0","event_id":"sha256:67537c5ffb6d3d9602184522227e2581dd61b50b0583a18d08255d9a4b5147e7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GZQRLMHM6HTGZ7Z5HQJWRCMSGW/bundle.json","state_url":"https://pith.science/pith/GZQRLMHM6HTGZ7Z5HQJWRCMSGW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GZQRLMHM6HTGZ7Z5HQJWRCMSGW/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":"2026-07-21T03:30:48Z","links":{"resolver":"https://pith.science/pith/GZQRLMHM6HTGZ7Z5HQJWRCMSGW","bundle":"https://pith.science/pith/GZQRLMHM6HTGZ7Z5HQJWRCMSGW/bundle.json","state":"https://pith.science/pith/GZQRLMHM6HTGZ7Z5HQJWRCMSGW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GZQRLMHM6HTGZ7Z5HQJWRCMSGW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:GZQRLMHM6HTGZ7Z5HQJWRCMSGW","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":"6969e49acb9eca29a9e9b07646a8062d46c6c2f2d8c3a93d7d6c2cfbf511a42f","cross_cats_sorted":["cs.IR","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2020-11-15T10:07:19Z","title_canon_sha256":"5d4bb6311d8d70f69e1d83215e4b1e82344a74cb88da7721351019b5d277f96b"},"schema_version":"1.0","source":{"id":"2012.02594","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.02594","created_at":"2026-07-05T01:57:08Z"},{"alias_kind":"arxiv_version","alias_value":"2012.02594v1","created_at":"2026-07-05T01:57:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.02594","created_at":"2026-07-05T01:57:08Z"},{"alias_kind":"pith_short_12","alias_value":"GZQRLMHM6HTG","created_at":"2026-07-05T01:57:08Z"},{"alias_kind":"pith_short_16","alias_value":"GZQRLMHM6HTGZ7Z5","created_at":"2026-07-05T01:57:08Z"},{"alias_kind":"pith_short_8","alias_value":"GZQRLMHM","created_at":"2026-07-05T01:57:08Z"}],"graph_snapshots":[{"event_id":"sha256:67537c5ffb6d3d9602184522227e2581dd61b50b0583a18d08255d9a4b5147e7","target":"graph","created_at":"2026-07-05T01:57:08Z","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/2012.02594/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"State of the art research for date-time entity extraction from text is task agnostic. Consequently, while the methods proposed in literature perform well for generic date-time extraction from texts, they don't fare as well on task specific date-time entity extraction where only a subset of the date-time entities present in the text are pertinent to solving the task. Furthermore, some tasks require identifying negation constraints associated with the date-time entities to correctly reason over time. We showcase a novel model for extracting task-specific date-time entities along with their negat","authors_text":"Barun Patra, Chala Fufa, Charles Lee, Pamela Bhattacharya","cross_cats":["cs.IR","cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2020-11-15T10:07:19Z","title":"To Schedule or not to Schedule: Extracting Task Specific Temporal Entities and Associated Negation Constraints"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.02594","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:e5a88f7c2f02726ad214cb4b4597250ee0a5066afbf0bb6d1e7047d1e1a1d854","target":"record","created_at":"2026-07-05T01:57:08Z","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":"6969e49acb9eca29a9e9b07646a8062d46c6c2f2d8c3a93d7d6c2cfbf511a42f","cross_cats_sorted":["cs.IR","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2020-11-15T10:07:19Z","title_canon_sha256":"5d4bb6311d8d70f69e1d83215e4b1e82344a74cb88da7721351019b5d277f96b"},"schema_version":"1.0","source":{"id":"2012.02594","kind":"arxiv","version":1}},"canonical_sha256":"366115b0ecf1e66cff3d3c1368899235a196509e1bca4f3d59923691082715ae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"366115b0ecf1e66cff3d3c1368899235a196509e1bca4f3d59923691082715ae","first_computed_at":"2026-07-05T01:57:08.293093Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:57:08.293093Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4LUA62BgYXzGMBaJZ/UMUbJaAQfV9+nVNA/TLfrAzdqzjt4MkpDFcuFzAGW831yobXWtdlOwQGMFcGSgLYHXCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:57:08.293506Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.02594","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e5a88f7c2f02726ad214cb4b4597250ee0a5066afbf0bb6d1e7047d1e1a1d854","sha256:67537c5ffb6d3d9602184522227e2581dd61b50b0583a18d08255d9a4b5147e7"],"state_sha256":"86ea6d5160df092e37c78c2b6565f1240faf29002a3aa00a908dde74f73b0441"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2mMY9o7U6TDeZNy5nk85Yk/cvkFlPpcKvj4xR167lWJELiZePkSD3juwb1d2xLbJVWGcbZw+zlROsOV8TfbyAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-21T03:30:48.453257Z","bundle_sha256":"988efc938361b1902c29374726da236293d763a8dfa31cd764278e8fbf7a0a5d"}}