{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:BKFJJPVN5WX32CEHDKY2S2P4HH","short_pith_number":"pith:BKFJJPVN","canonical_record":{"source":{"id":"1805.12386","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2018-05-31T09:11:16Z","cross_cats_sorted":[],"title_canon_sha256":"272725563b6b61d75320bfc62349021eb423466c5ce1f9b9117992f6bc986fb5","abstract_canon_sha256":"e0563161bd2aad7eccc484bb54a6360d4e41c9341df6e2b8b87e981b18afb4cb"},"schema_version":"1.0"},"canonical_sha256":"0a8a94beadedafbd08871ab1a969fc39d16bb0fc17ff90433f078fc798d91b55","source":{"kind":"arxiv","id":"1805.12386","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.12386","created_at":"2026-07-05T02:12:27Z"},{"alias_kind":"arxiv_version","alias_value":"1805.12386v4","created_at":"2026-07-05T02:12:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.12386","created_at":"2026-07-05T02:12:27Z"},{"alias_kind":"pith_short_12","alias_value":"BKFJJPVN5WX3","created_at":"2026-07-05T02:12:27Z"},{"alias_kind":"pith_short_16","alias_value":"BKFJJPVN5WX32CEH","created_at":"2026-07-05T02:12:27Z"},{"alias_kind":"pith_short_8","alias_value":"BKFJJPVN","created_at":"2026-07-05T02:12:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:BKFJJPVN5WX32CEHDKY2S2P4HH","target":"record","payload":{"canonical_record":{"source":{"id":"1805.12386","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2018-05-31T09:11:16Z","cross_cats_sorted":[],"title_canon_sha256":"272725563b6b61d75320bfc62349021eb423466c5ce1f9b9117992f6bc986fb5","abstract_canon_sha256":"e0563161bd2aad7eccc484bb54a6360d4e41c9341df6e2b8b87e981b18afb4cb"},"schema_version":"1.0"},"canonical_sha256":"0a8a94beadedafbd08871ab1a969fc39d16bb0fc17ff90433f078fc798d91b55","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:12:27.517295Z","signature_b64":"ygLSo4DDtmCC6gegz4AkOE8ue2o0GyeQu988EuCRn0vVeHeSbu5xbLTI7hhhxtmNVx8/QGyKgCCNLcu1PAoeCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0a8a94beadedafbd08871ab1a969fc39d16bb0fc17ff90433f078fc798d91b55","last_reissued_at":"2026-07-05T02:12:27.516847Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:12:27.516847Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.12386","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:12:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kU4O3lZct8w7I48Y4huca+MFM0nPThpvddWHfzQw9I+A3J49GkSgq5Fpc74FDshCjY4ZFpLAv4e2yxgYCjVeDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T14:25:31.535471Z"},"content_sha256":"35cc757130adffa755ec8da597635e033bd26317e5625a4ff214dd9559a264f1","schema_version":"1.0","event_id":"sha256:35cc757130adffa755ec8da597635e033bd26317e5625a4ff214dd9559a264f1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:BKFJJPVN5WX32CEHDKY2S2P4HH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SemEval 2019 Shared Task: Cross-lingual Semantic Parsing with UCCA - Call for Participation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Ari Rappoport, Daniel Hershcovich, Elior Sulem, Leshem Choshen, Omri Abend, Zohar Aizenbud","submitted_at":"2018-05-31T09:11:16Z","abstract_excerpt":"We announce a shared task on UCCA parsing in English, German and French, and call for participants to submit their systems. UCCA is a cross-linguistically applicable framework for semantic representation, which builds on extensive typological work and supports rapid annotation. UCCA poses a challenge for existing parsing techniques, as it exhibits reentrancy (resulting in DAG structures), discontinuous structures and non-terminal nodes corresponding to complex semantic units. Given the success of recent semantic parsing shared tasks (on SDP and AMR), we expect the task to have a significant co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.12386","kind":"arxiv","version":4},"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/1805.12386/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":"2026-07-05T02:12:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bkbTQp/s13hoYFT+RfCpQlS0zXwbyG7rxXdJXsRilYl1FEDDHR1f4w2NsL/f3sY33ZNYbrZmYFn8rZv1/Y0WBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T14:25:31.535984Z"},"content_sha256":"21fffafb93a7af2be0f8d68647ebd95b589e9d07936c64da46cfe5c400f1de75","schema_version":"1.0","event_id":"sha256:21fffafb93a7af2be0f8d68647ebd95b589e9d07936c64da46cfe5c400f1de75"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BKFJJPVN5WX32CEHDKY2S2P4HH/bundle.json","state_url":"https://pith.science/pith/BKFJJPVN5WX32CEHDKY2S2P4HH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BKFJJPVN5WX32CEHDKY2S2P4HH/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":"2026-08-05T14:25:31Z","links":{"resolver":"https://pith.science/pith/BKFJJPVN5WX32CEHDKY2S2P4HH","bundle":"https://pith.science/pith/BKFJJPVN5WX32CEHDKY2S2P4HH/bundle.json","state":"https://pith.science/pith/BKFJJPVN5WX32CEHDKY2S2P4HH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BKFJJPVN5WX32CEHDKY2S2P4HH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:BKFJJPVN5WX32CEHDKY2S2P4HH","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":"e0563161bd2aad7eccc484bb54a6360d4e41c9341df6e2b8b87e981b18afb4cb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2018-05-31T09:11:16Z","title_canon_sha256":"272725563b6b61d75320bfc62349021eb423466c5ce1f9b9117992f6bc986fb5"},"schema_version":"1.0","source":{"id":"1805.12386","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.12386","created_at":"2026-07-05T02:12:27Z"},{"alias_kind":"arxiv_version","alias_value":"1805.12386v4","created_at":"2026-07-05T02:12:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.12386","created_at":"2026-07-05T02:12:27Z"},{"alias_kind":"pith_short_12","alias_value":"BKFJJPVN5WX3","created_at":"2026-07-05T02:12:27Z"},{"alias_kind":"pith_short_16","alias_value":"BKFJJPVN5WX32CEH","created_at":"2026-07-05T02:12:27Z"},{"alias_kind":"pith_short_8","alias_value":"BKFJJPVN","created_at":"2026-07-05T02:12:27Z"}],"graph_snapshots":[{"event_id":"sha256:21fffafb93a7af2be0f8d68647ebd95b589e9d07936c64da46cfe5c400f1de75","target":"graph","created_at":"2026-07-05T02:12:27Z","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/1805.12386/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We announce a shared task on UCCA parsing in English, German and French, and call for participants to submit their systems. UCCA is a cross-linguistically applicable framework for semantic representation, which builds on extensive typological work and supports rapid annotation. UCCA poses a challenge for existing parsing techniques, as it exhibits reentrancy (resulting in DAG structures), discontinuous structures and non-terminal nodes corresponding to complex semantic units. Given the success of recent semantic parsing shared tasks (on SDP and AMR), we expect the task to have a significant co","authors_text":"Ari Rappoport, Daniel Hershcovich, Elior Sulem, Leshem Choshen, Omri Abend, Zohar Aizenbud","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2018-05-31T09:11:16Z","title":"SemEval 2019 Shared Task: Cross-lingual Semantic Parsing with UCCA - Call for Participation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.12386","kind":"arxiv","version":4},"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":"sha256:35cc757130adffa755ec8da597635e033bd26317e5625a4ff214dd9559a264f1","target":"record","created_at":"2026-07-05T02:12:27Z","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":"e0563161bd2aad7eccc484bb54a6360d4e41c9341df6e2b8b87e981b18afb4cb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2018-05-31T09:11:16Z","title_canon_sha256":"272725563b6b61d75320bfc62349021eb423466c5ce1f9b9117992f6bc986fb5"},"schema_version":"1.0","source":{"id":"1805.12386","kind":"arxiv","version":4}},"canonical_sha256":"0a8a94beadedafbd08871ab1a969fc39d16bb0fc17ff90433f078fc798d91b55","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0a8a94beadedafbd08871ab1a969fc39d16bb0fc17ff90433f078fc798d91b55","first_computed_at":"2026-07-05T02:12:27.516847Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:12:27.516847Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ygLSo4DDtmCC6gegz4AkOE8ue2o0GyeQu988EuCRn0vVeHeSbu5xbLTI7hhhxtmNVx8/QGyKgCCNLcu1PAoeCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:12:27.517295Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.12386","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:35cc757130adffa755ec8da597635e033bd26317e5625a4ff214dd9559a264f1","sha256:21fffafb93a7af2be0f8d68647ebd95b589e9d07936c64da46cfe5c400f1de75"],"state_sha256":"d5add8ea0be347b12e5a442d8e3a44d5de932b7b418d4f6ff862f974fc19367b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Em3xd4W76ifycOIqF8bLwt1/L9Yv9h0+ntmanVjK4KI60STkVkF/hb4ymzBt06a5PlRMBY/t8JXd1HyyeL4iAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T14:25:31.541623Z","bundle_sha256":"e69c477129a68903051a7012376f8060132e8f1a0c33859088ef46dca4ffb928"}}