{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:YVOQA5UHDQRUXP2QACNSF42Y5P","short_pith_number":"pith:YVOQA5UH","canonical_record":{"source":{"id":"1712.08933","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2017-12-24T14:54:22Z","cross_cats_sorted":[],"title_canon_sha256":"28b126d75a6233313285e5b97b4512eaee7b7526aae8876ee52829b643a866db","abstract_canon_sha256":"07a94472e72743dcb4a03b610f7dca8c6c631f3966357118181cf9108181be62"},"schema_version":"1.0"},"canonical_sha256":"c55d0076871c234bbf50009b22f358ebc621f84192e465a2c5fa3056f5b71a3c","source":{"kind":"arxiv","id":"1712.08933","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.08933","created_at":"2026-05-18T00:27:14Z"},{"alias_kind":"arxiv_version","alias_value":"1712.08933v1","created_at":"2026-05-18T00:27:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.08933","created_at":"2026-05-18T00:27:14Z"},{"alias_kind":"pith_short_12","alias_value":"YVOQA5UHDQRU","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"YVOQA5UHDQRUXP2Q","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"YVOQA5UH","created_at":"2026-05-18T12:31:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:YVOQA5UHDQRUXP2QACNSF42Y5P","target":"record","payload":{"canonical_record":{"source":{"id":"1712.08933","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2017-12-24T14:54:22Z","cross_cats_sorted":[],"title_canon_sha256":"28b126d75a6233313285e5b97b4512eaee7b7526aae8876ee52829b643a866db","abstract_canon_sha256":"07a94472e72743dcb4a03b610f7dca8c6c631f3966357118181cf9108181be62"},"schema_version":"1.0"},"canonical_sha256":"c55d0076871c234bbf50009b22f358ebc621f84192e465a2c5fa3056f5b71a3c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:14.816829Z","signature_b64":"tg8qMJA8+o1q3oEKYTdmaFiuWRDRPTHFJaiyg3+WDlC2zWreoxyxrBFpIL8LI3NrURyAX2TjzrgAMnUbqXa6Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c55d0076871c234bbf50009b22f358ebc621f84192e465a2c5fa3056f5b71a3c","last_reissued_at":"2026-05-18T00:27:14.816378Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:14.816378Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.08933","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":"2026-05-18T00:27:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZRn7VU7iSWzo6S/ygW8M7ccTuaAgIXnKjRSP2pIKx/fjukCCoMgZN6rTVxtvHcIFqujpE4chuVMw3isIjt5aAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T04:59:48.163876Z"},"content_sha256":"d499823ae2f83015f2ef1f1edd5b9c1f73fed504f7c7b4eacea90e04e0624471","schema_version":"1.0","event_id":"sha256:d499823ae2f83015f2ef1f1edd5b9c1f73fed504f7c7b4eacea90e04e0624471"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:YVOQA5UHDQRUXP2QACNSF42Y5P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Semi-automatic definite description annotation: a first report","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Alex Gwo Jen Lan, Danillo da Silva Rocha, Ivandre Paraboni","submitted_at":"2017-12-24T14:54:22Z","abstract_excerpt":"Studies in Referring Expression Generation (REG) often make use of corpora of definite descriptions produced by human subjects in controlled experiments. Experiments of this kind, which are essential for the study of reference phenomena and many others, may however include a considerable amount of noise. Human subjects may easily lack attention, or may simply misunderstand the task at hand and, as a result, the elicited data may include large proportions of ambiguous or ill-formed descriptions. In addition to that, REG corpora are usually collected for the study of semantics-related phenomena,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.08933","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":"2026-05-18T00:27:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pJsXqiua3mr6s4gZ0dMO1jD0ac2ihHBu+W2x2nVedNdAU6sL3CQc/cXiR4YfkESU8apNf35GSuagBNKrg3fLAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T04:59:48.164210Z"},"content_sha256":"0e74edc31ad221771ac6f67e73ac27cbe28ccd5314949b120ab96dfb7cb70b37","schema_version":"1.0","event_id":"sha256:0e74edc31ad221771ac6f67e73ac27cbe28ccd5314949b120ab96dfb7cb70b37"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YVOQA5UHDQRUXP2QACNSF42Y5P/bundle.json","state_url":"https://pith.science/pith/YVOQA5UHDQRUXP2QACNSF42Y5P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YVOQA5UHDQRUXP2QACNSF42Y5P/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":"2026-06-28T04:59:48Z","links":{"resolver":"https://pith.science/pith/YVOQA5UHDQRUXP2QACNSF42Y5P","bundle":"https://pith.science/pith/YVOQA5UHDQRUXP2QACNSF42Y5P/bundle.json","state":"https://pith.science/pith/YVOQA5UHDQRUXP2QACNSF42Y5P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YVOQA5UHDQRUXP2QACNSF42Y5P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:YVOQA5UHDQRUXP2QACNSF42Y5P","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":"07a94472e72743dcb4a03b610f7dca8c6c631f3966357118181cf9108181be62","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2017-12-24T14:54:22Z","title_canon_sha256":"28b126d75a6233313285e5b97b4512eaee7b7526aae8876ee52829b643a866db"},"schema_version":"1.0","source":{"id":"1712.08933","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.08933","created_at":"2026-05-18T00:27:14Z"},{"alias_kind":"arxiv_version","alias_value":"1712.08933v1","created_at":"2026-05-18T00:27:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.08933","created_at":"2026-05-18T00:27:14Z"},{"alias_kind":"pith_short_12","alias_value":"YVOQA5UHDQRU","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"YVOQA5UHDQRUXP2Q","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"YVOQA5UH","created_at":"2026-05-18T12:31:56Z"}],"graph_snapshots":[{"event_id":"sha256:0e74edc31ad221771ac6f67e73ac27cbe28ccd5314949b120ab96dfb7cb70b37","target":"graph","created_at":"2026-05-18T00:27:14Z","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":"Studies in Referring Expression Generation (REG) often make use of corpora of definite descriptions produced by human subjects in controlled experiments. Experiments of this kind, which are essential for the study of reference phenomena and many others, may however include a considerable amount of noise. Human subjects may easily lack attention, or may simply misunderstand the task at hand and, as a result, the elicited data may include large proportions of ambiguous or ill-formed descriptions. In addition to that, REG corpora are usually collected for the study of semantics-related phenomena,","authors_text":"Alex Gwo Jen Lan, Danillo da Silva Rocha, Ivandre Paraboni","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2017-12-24T14:54:22Z","title":"Semi-automatic definite description annotation: a first report"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.08933","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:d499823ae2f83015f2ef1f1edd5b9c1f73fed504f7c7b4eacea90e04e0624471","target":"record","created_at":"2026-05-18T00:27:14Z","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":"07a94472e72743dcb4a03b610f7dca8c6c631f3966357118181cf9108181be62","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2017-12-24T14:54:22Z","title_canon_sha256":"28b126d75a6233313285e5b97b4512eaee7b7526aae8876ee52829b643a866db"},"schema_version":"1.0","source":{"id":"1712.08933","kind":"arxiv","version":1}},"canonical_sha256":"c55d0076871c234bbf50009b22f358ebc621f84192e465a2c5fa3056f5b71a3c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c55d0076871c234bbf50009b22f358ebc621f84192e465a2c5fa3056f5b71a3c","first_computed_at":"2026-05-18T00:27:14.816378Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:27:14.816378Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tg8qMJA8+o1q3oEKYTdmaFiuWRDRPTHFJaiyg3+WDlC2zWreoxyxrBFpIL8LI3NrURyAX2TjzrgAMnUbqXa6Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:27:14.816829Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.08933","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d499823ae2f83015f2ef1f1edd5b9c1f73fed504f7c7b4eacea90e04e0624471","sha256:0e74edc31ad221771ac6f67e73ac27cbe28ccd5314949b120ab96dfb7cb70b37"],"state_sha256":"d835f984fc420b4708191862e9f72c4c4f6c4b90191f5b852c42c97d59c9f51a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EytpOlZaxupJ+vqV98LC3iTuTrbavg3Bi0rXC8yy4N/NjExpUFhnMpYnuiSiliUTleEHosoJ3i0y/aU29y5NBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T04:59:48.166082Z","bundle_sha256":"985aabf6b233e19bc16012107ec59d379790f107033f3544e71c18f8004370bf"}}