{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:SPCW3I2QEA32UNQLVZFPAOWE2C","short_pith_number":"pith:SPCW3I2Q","canonical_record":{"source":{"id":"1107.4687","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2011-07-23T12:56:02Z","cross_cats_sorted":[],"title_canon_sha256":"23ea3445851d22b5bc71af4c351637e5ddec3e7229af56d1eccbe5e9c0f087ae","abstract_canon_sha256":"d7ac4a6fc02fc3ec8ed4ef9ef6161f7dc4d564f8349bb037990c53456326ad5b"},"schema_version":"1.0"},"canonical_sha256":"93c56da3502037aa360bae4af03ac4d0896fe1160dbd4ba1e613b38a11e99f0c","source":{"kind":"arxiv","id":"1107.4687","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.4687","created_at":"2026-05-18T04:11:31Z"},{"alias_kind":"arxiv_version","alias_value":"1107.4687v2","created_at":"2026-05-18T04:11:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.4687","created_at":"2026-05-18T04:11:31Z"},{"alias_kind":"pith_short_12","alias_value":"SPCW3I2QEA32","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_16","alias_value":"SPCW3I2QEA32UNQL","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_8","alias_value":"SPCW3I2Q","created_at":"2026-05-18T12:26:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:SPCW3I2QEA32UNQLVZFPAOWE2C","target":"record","payload":{"canonical_record":{"source":{"id":"1107.4687","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2011-07-23T12:56:02Z","cross_cats_sorted":[],"title_canon_sha256":"23ea3445851d22b5bc71af4c351637e5ddec3e7229af56d1eccbe5e9c0f087ae","abstract_canon_sha256":"d7ac4a6fc02fc3ec8ed4ef9ef6161f7dc4d564f8349bb037990c53456326ad5b"},"schema_version":"1.0"},"canonical_sha256":"93c56da3502037aa360bae4af03ac4d0896fe1160dbd4ba1e613b38a11e99f0c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:11:31.480152Z","signature_b64":"jHxnfSiBIQul4lznVODkPMZqTfpl8cx40u44qQPkPfgWm0cY3Y8G2fKu/p6mAQga3K6K/coCFMqnn5aYc+nxCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"93c56da3502037aa360bae4af03ac4d0896fe1160dbd4ba1e613b38a11e99f0c","last_reissued_at":"2026-05-18T04:11:31.479615Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:11:31.479615Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1107.4687","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:11:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m5rCbmJ+tudQLIZBXtqfehnXtbvWKpB7SpCKNXvEdx50tWUQh8G0n3P2uaDPKV+Sey7gnvqh/DZxkdww5OCBBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T14:57:54.300147Z"},"content_sha256":"bc5f2f7824988075664b5ee46171e34283e61d1c0c8f81c218aee94282ef73ce","schema_version":"1.0","event_id":"sha256:bc5f2f7824988075664b5ee46171e34283e61d1c0c8f81c218aee94282ef73ce"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:SPCW3I2QEA32UNQLVZFPAOWE2C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fence - An Efficient Parser with Ambiguity Support for Model-Driven Language Specification","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Fernando Berzal, Francisco J. Cortijo, Luis Quesada","submitted_at":"2011-07-23T12:56:02Z","abstract_excerpt":"Model-based language specification has applications in the implementation of language processors, the design of domain-specific languages, model-driven software development, data integration, text mining, natural language processing, and corpus-based induction of models. Model-based language specification decouples language design from language processing and, unlike traditional grammar-driven approaches, which constrain language designers to specific kinds of grammars, it needs general parser generators able to deal with ambiguities. In this paper, we propose Fence, an efficient bottom-up par"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.4687","kind":"arxiv","version":2},"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":"2026-05-18T04:11:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T6yNZnEFjI8fTV/HAoiWC7Hm3HLs8q8f6t6gFvN0y2bUFKN+CVOjI/fcV9ZGBeGY8d9zaQSCefUSBoHyV0NSDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T14:57:54.300508Z"},"content_sha256":"18c75dc137d8e6bf0961716ae60fe37e925c3c0010cbd45d6f27a60a12899111","schema_version":"1.0","event_id":"sha256:18c75dc137d8e6bf0961716ae60fe37e925c3c0010cbd45d6f27a60a12899111"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SPCW3I2QEA32UNQLVZFPAOWE2C/bundle.json","state_url":"https://pith.science/pith/SPCW3I2QEA32UNQLVZFPAOWE2C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SPCW3I2QEA32UNQLVZFPAOWE2C/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":"2026-06-22T14:57:54Z","links":{"resolver":"https://pith.science/pith/SPCW3I2QEA32UNQLVZFPAOWE2C","bundle":"https://pith.science/pith/SPCW3I2QEA32UNQLVZFPAOWE2C/bundle.json","state":"https://pith.science/pith/SPCW3I2QEA32UNQLVZFPAOWE2C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SPCW3I2QEA32UNQLVZFPAOWE2C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:SPCW3I2QEA32UNQLVZFPAOWE2C","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":"d7ac4a6fc02fc3ec8ed4ef9ef6161f7dc4d564f8349bb037990c53456326ad5b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2011-07-23T12:56:02Z","title_canon_sha256":"23ea3445851d22b5bc71af4c351637e5ddec3e7229af56d1eccbe5e9c0f087ae"},"schema_version":"1.0","source":{"id":"1107.4687","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.4687","created_at":"2026-05-18T04:11:31Z"},{"alias_kind":"arxiv_version","alias_value":"1107.4687v2","created_at":"2026-05-18T04:11:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.4687","created_at":"2026-05-18T04:11:31Z"},{"alias_kind":"pith_short_12","alias_value":"SPCW3I2QEA32","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_16","alias_value":"SPCW3I2QEA32UNQL","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_8","alias_value":"SPCW3I2Q","created_at":"2026-05-18T12:26:41Z"}],"graph_snapshots":[{"event_id":"sha256:18c75dc137d8e6bf0961716ae60fe37e925c3c0010cbd45d6f27a60a12899111","target":"graph","created_at":"2026-05-18T04:11:31Z","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":"Model-based language specification has applications in the implementation of language processors, the design of domain-specific languages, model-driven software development, data integration, text mining, natural language processing, and corpus-based induction of models. Model-based language specification decouples language design from language processing and, unlike traditional grammar-driven approaches, which constrain language designers to specific kinds of grammars, it needs general parser generators able to deal with ambiguities. In this paper, we propose Fence, an efficient bottom-up par","authors_text":"Fernando Berzal, Francisco J. Cortijo, Luis Quesada","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2011-07-23T12:56:02Z","title":"Fence - An Efficient Parser with Ambiguity Support for Model-Driven Language Specification"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.4687","kind":"arxiv","version":2},"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:bc5f2f7824988075664b5ee46171e34283e61d1c0c8f81c218aee94282ef73ce","target":"record","created_at":"2026-05-18T04:11:31Z","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":"d7ac4a6fc02fc3ec8ed4ef9ef6161f7dc4d564f8349bb037990c53456326ad5b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2011-07-23T12:56:02Z","title_canon_sha256":"23ea3445851d22b5bc71af4c351637e5ddec3e7229af56d1eccbe5e9c0f087ae"},"schema_version":"1.0","source":{"id":"1107.4687","kind":"arxiv","version":2}},"canonical_sha256":"93c56da3502037aa360bae4af03ac4d0896fe1160dbd4ba1e613b38a11e99f0c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"93c56da3502037aa360bae4af03ac4d0896fe1160dbd4ba1e613b38a11e99f0c","first_computed_at":"2026-05-18T04:11:31.479615Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:11:31.479615Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jHxnfSiBIQul4lznVODkPMZqTfpl8cx40u44qQPkPfgWm0cY3Y8G2fKu/p6mAQga3K6K/coCFMqnn5aYc+nxCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:11:31.480152Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.4687","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc5f2f7824988075664b5ee46171e34283e61d1c0c8f81c218aee94282ef73ce","sha256:18c75dc137d8e6bf0961716ae60fe37e925c3c0010cbd45d6f27a60a12899111"],"state_sha256":"924b58f96304b08a73432c74b76c043fc1cb83bcbf42def9f69cd1fdb0eed54e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kjWFH9buqw2gCRD1tQ5igJrz2P939uvSxTneNHKbqe3ZqAECeWfWENDJgkQwbY+vTVU4GIzD+6fVSLQPgAM3Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-22T14:57:54.302415Z","bundle_sha256":"7a1e59e2fc7e4b8ce0a84e3d3f9848923b50334ef345e7430f2949c2ceee2a86"}}