{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:H6XFISUR4YCSD75FREC4PQMCHZ","short_pith_number":"pith:H6XFISUR","canonical_record":{"source":{"id":"2105.00477","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2021-05-02T13:59:07Z","cross_cats_sorted":[],"title_canon_sha256":"208dcb65eb922959e3c4f5ae230af8af16369b4a135a6d7e4d029661e57abf4c","abstract_canon_sha256":"b92301d56f44c30362149917759c71fc4f02c802f8e8e9e99367ad075ba58abd"},"schema_version":"1.0"},"canonical_sha256":"3fae544a91e60521ffa58905c7c1823e62a3054c15bfd0aa33ea3513930757af","source":{"kind":"arxiv","id":"2105.00477","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.00477","created_at":"2026-07-05T02:36:54Z"},{"alias_kind":"arxiv_version","alias_value":"2105.00477v1","created_at":"2026-07-05T02:36:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.00477","created_at":"2026-07-05T02:36:54Z"},{"alias_kind":"pith_short_12","alias_value":"H6XFISUR4YCS","created_at":"2026-07-05T02:36:54Z"},{"alias_kind":"pith_short_16","alias_value":"H6XFISUR4YCSD75F","created_at":"2026-07-05T02:36:54Z"},{"alias_kind":"pith_short_8","alias_value":"H6XFISUR","created_at":"2026-07-05T02:36:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:H6XFISUR4YCSD75FREC4PQMCHZ","target":"record","payload":{"canonical_record":{"source":{"id":"2105.00477","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2021-05-02T13:59:07Z","cross_cats_sorted":[],"title_canon_sha256":"208dcb65eb922959e3c4f5ae230af8af16369b4a135a6d7e4d029661e57abf4c","abstract_canon_sha256":"b92301d56f44c30362149917759c71fc4f02c802f8e8e9e99367ad075ba58abd"},"schema_version":"1.0"},"canonical_sha256":"3fae544a91e60521ffa58905c7c1823e62a3054c15bfd0aa33ea3513930757af","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:36:54.795570Z","signature_b64":"PX1rGYCmfS+EmpOnR/gJlUhek/nsIUk1tre/1W7ztVO/dRREM23LAkYDozKtWQkq4n3GOZA2jOWVW0hWZW33BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3fae544a91e60521ffa58905c7c1823e62a3054c15bfd0aa33ea3513930757af","last_reissued_at":"2026-07-05T02:36:54.795160Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:36:54.795160Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.00477","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":"2026-07-05T02:36:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3WHDqtllw9EDoX7uEgknvazeI4Eph5tx99wBn2TFQsHf4xfS6RLd3pSRXCq6J4aSGPV4XeuD7z2q/dUkxZCaBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T21:36:52.746953Z"},"content_sha256":"392d2f10c76ba9a73ac99681bdc58018dc9e8bc94d09e74a915f6dcf7b882187","schema_version":"1.0","event_id":"sha256:392d2f10c76ba9a73ac99681bdc58018dc9e8bc94d09e74a915f6dcf7b882187"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:H6XFISUR4YCSD75FREC4PQMCHZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Event Argument Extraction using Causal Knowledge Structures","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Debanjana Kar, Pawan Goyal, Sudeshna Sarkar","submitted_at":"2021-05-02T13:59:07Z","abstract_excerpt":"Event Argument extraction refers to the task of extracting structured information from unstructured text for a particular event of interest. The existing works exhibit poor capabilities to extract causal event arguments like Reason and After Effects. Furthermore, most of the existing works model this task at a sentence level, restricting the context to a local scope. While it may be effective for short spans of text, for longer bodies of text such as news articles, it has often been observed that the arguments for an event do not necessarily occur in the same sentence as that containing an eve"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.00477","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/2105.00477/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":"2026-07-05T02:36:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CLc/b4SGhIbCr+KVvTpdL5Ekv5aKCmW7Drzlnybm4whTbhSH2qSxKMMedkse2+2ZqegdI1cMPOs0R4COqK6xBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T21:36:52.747440Z"},"content_sha256":"6c66760b0cfc40652f286077d431472496e147605915f832eb56cae370033780","schema_version":"1.0","event_id":"sha256:6c66760b0cfc40652f286077d431472496e147605915f832eb56cae370033780"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H6XFISUR4YCSD75FREC4PQMCHZ/bundle.json","state_url":"https://pith.science/pith/H6XFISUR4YCSD75FREC4PQMCHZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H6XFISUR4YCSD75FREC4PQMCHZ/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":"2026-08-11T21:36:52Z","links":{"resolver":"https://pith.science/pith/H6XFISUR4YCSD75FREC4PQMCHZ","bundle":"https://pith.science/pith/H6XFISUR4YCSD75FREC4PQMCHZ/bundle.json","state":"https://pith.science/pith/H6XFISUR4YCSD75FREC4PQMCHZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H6XFISUR4YCSD75FREC4PQMCHZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:H6XFISUR4YCSD75FREC4PQMCHZ","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":"b92301d56f44c30362149917759c71fc4f02c802f8e8e9e99367ad075ba58abd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2021-05-02T13:59:07Z","title_canon_sha256":"208dcb65eb922959e3c4f5ae230af8af16369b4a135a6d7e4d029661e57abf4c"},"schema_version":"1.0","source":{"id":"2105.00477","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.00477","created_at":"2026-07-05T02:36:54Z"},{"alias_kind":"arxiv_version","alias_value":"2105.00477v1","created_at":"2026-07-05T02:36:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.00477","created_at":"2026-07-05T02:36:54Z"},{"alias_kind":"pith_short_12","alias_value":"H6XFISUR4YCS","created_at":"2026-07-05T02:36:54Z"},{"alias_kind":"pith_short_16","alias_value":"H6XFISUR4YCSD75F","created_at":"2026-07-05T02:36:54Z"},{"alias_kind":"pith_short_8","alias_value":"H6XFISUR","created_at":"2026-07-05T02:36:54Z"}],"graph_snapshots":[{"event_id":"sha256:6c66760b0cfc40652f286077d431472496e147605915f832eb56cae370033780","target":"graph","created_at":"2026-07-05T02:36:54Z","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/2105.00477/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Event Argument extraction refers to the task of extracting structured information from unstructured text for a particular event of interest. The existing works exhibit poor capabilities to extract causal event arguments like Reason and After Effects. Furthermore, most of the existing works model this task at a sentence level, restricting the context to a local scope. While it may be effective for short spans of text, for longer bodies of text such as news articles, it has often been observed that the arguments for an event do not necessarily occur in the same sentence as that containing an eve","authors_text":"Debanjana Kar, Pawan Goyal, Sudeshna Sarkar","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2021-05-02T13:59:07Z","title":"Event Argument Extraction using Causal Knowledge Structures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.00477","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":"sha256:392d2f10c76ba9a73ac99681bdc58018dc9e8bc94d09e74a915f6dcf7b882187","target":"record","created_at":"2026-07-05T02:36:54Z","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":"b92301d56f44c30362149917759c71fc4f02c802f8e8e9e99367ad075ba58abd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2021-05-02T13:59:07Z","title_canon_sha256":"208dcb65eb922959e3c4f5ae230af8af16369b4a135a6d7e4d029661e57abf4c"},"schema_version":"1.0","source":{"id":"2105.00477","kind":"arxiv","version":1}},"canonical_sha256":"3fae544a91e60521ffa58905c7c1823e62a3054c15bfd0aa33ea3513930757af","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3fae544a91e60521ffa58905c7c1823e62a3054c15bfd0aa33ea3513930757af","first_computed_at":"2026-07-05T02:36:54.795160Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:36:54.795160Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PX1rGYCmfS+EmpOnR/gJlUhek/nsIUk1tre/1W7ztVO/dRREM23LAkYDozKtWQkq4n3GOZA2jOWVW0hWZW33BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:36:54.795570Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.00477","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:392d2f10c76ba9a73ac99681bdc58018dc9e8bc94d09e74a915f6dcf7b882187","sha256:6c66760b0cfc40652f286077d431472496e147605915f832eb56cae370033780"],"state_sha256":"4d1ce3270d4a1f61f7e9a11d489737eba05ee4c5051da47e3758d04ac0fac830"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KjtlXUAot6klGwB+JZgIOfgqHezsOGKj/YOThsTPvZAkq8wOLecr165Fic0SDsdp6BbGZv1D1Ecs6wxarradDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T21:36:52.751983Z","bundle_sha256":"eb0d9affaaf243ca3d553add6f229c48d6939bd0647d4f365bb933a004792618"}}