{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:JYANT65SL7IVPXE6WIY4D3HJD2","short_pith_number":"pith:JYANT65S","canonical_record":{"source":{"id":"1408.3731","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2014-08-16T10:09:28Z","cross_cats_sorted":[],"title_canon_sha256":"b7f966100bb2b5c06f939c6c6dfce94ad83c62ab9053d2a2f80d0e2c20c229ca","abstract_canon_sha256":"1ac704d99bca72c520777bfff4376eacc697a9b75d90adb3099c2862c028e242"},"schema_version":"1.0"},"canonical_sha256":"4e00d9fbb25fd157dc9eb231c1ece91ebc377332e1667160560b9d1a503cba78","source":{"kind":"arxiv","id":"1408.3731","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.3731","created_at":"2026-05-18T02:38:45Z"},{"alias_kind":"arxiv_version","alias_value":"1408.3731v2","created_at":"2026-05-18T02:38:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.3731","created_at":"2026-05-18T02:38:45Z"},{"alias_kind":"pith_short_12","alias_value":"JYANT65SL7IV","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"JYANT65SL7IVPXE6","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"JYANT65S","created_at":"2026-05-18T12:28:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:JYANT65SL7IVPXE6WIY4D3HJD2","target":"record","payload":{"canonical_record":{"source":{"id":"1408.3731","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2014-08-16T10:09:28Z","cross_cats_sorted":[],"title_canon_sha256":"b7f966100bb2b5c06f939c6c6dfce94ad83c62ab9053d2a2f80d0e2c20c229ca","abstract_canon_sha256":"1ac704d99bca72c520777bfff4376eacc697a9b75d90adb3099c2862c028e242"},"schema_version":"1.0"},"canonical_sha256":"4e00d9fbb25fd157dc9eb231c1ece91ebc377332e1667160560b9d1a503cba78","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:38:45.851064Z","signature_b64":"IAA1rAQz+MGYQyBn2dC3UIO190tESIuyY6iPJWfj39OVqxUgvo2ypA2qUWMS/i6V6/sFp+TPA61hn8ZKfIhSBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4e00d9fbb25fd157dc9eb231c1ece91ebc377332e1667160560b9d1a503cba78","last_reissued_at":"2026-05-18T02:38:45.850591Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:38:45.850591Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1408.3731","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":"2026-05-18T02:38:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qttn5GFP449YXUaFE9TFh2D47VhnlAzNPB2g3IOtFG6qaVnf5KhA24wP0VZoKB+ujzPGNe9iKqqpNEWkCb2lBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T13:41:40.374350Z"},"content_sha256":"d22d5fc98777a21ebf812926871b43f919a1bc36ec7d7365e01707dbe4f9e923","schema_version":"1.0","event_id":"sha256:d22d5fc98777a21ebf812926871b43f919a1bc36ec7d7365e01707dbe4f9e923"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:JYANT65SL7IVPXE6WIY4D3HJD2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unsupervised Keyword Extraction from Polish Legal Texts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Micha{\\l} Jungiewicz, Micha{\\l} {\\L}opuszy\\'nski","submitted_at":"2014-08-16T10:09:28Z","abstract_excerpt":"In this work, we present an application of the recently proposed unsupervised keyword extraction algorithm RAKE to a corpus of Polish legal texts from the field of public procurement. RAKE is essentially a language and domain independent method. Its only language-specific input is a stoplist containing a set of non-content words. The performance of the method heavily depends on the choice of such a stoplist, which should be domain adopted. Therefore, we complement RAKE algorithm with an automatic approach to selecting non-content words, which is based on the statistical properties of term dist"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.3731","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":"2026-05-18T02:38:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xjns7m/VXf5OWKOi2hkRCNMaJdN+PhV60lY1pzoBsAIMpRYMm+sIiV6x0/xwFuLaRfKrOhUVTiKHTt282y/zCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T13:41:40.374705Z"},"content_sha256":"d9e706dcc292cd0c65ccd7168fde7708b6d674f4ffc332b317b8973aae66a15a","schema_version":"1.0","event_id":"sha256:d9e706dcc292cd0c65ccd7168fde7708b6d674f4ffc332b317b8973aae66a15a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JYANT65SL7IVPXE6WIY4D3HJD2/bundle.json","state_url":"https://pith.science/pith/JYANT65SL7IVPXE6WIY4D3HJD2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JYANT65SL7IVPXE6WIY4D3HJD2/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":"2026-06-28T13:41:40Z","links":{"resolver":"https://pith.science/pith/JYANT65SL7IVPXE6WIY4D3HJD2","bundle":"https://pith.science/pith/JYANT65SL7IVPXE6WIY4D3HJD2/bundle.json","state":"https://pith.science/pith/JYANT65SL7IVPXE6WIY4D3HJD2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JYANT65SL7IVPXE6WIY4D3HJD2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:JYANT65SL7IVPXE6WIY4D3HJD2","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":"1ac704d99bca72c520777bfff4376eacc697a9b75d90adb3099c2862c028e242","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2014-08-16T10:09:28Z","title_canon_sha256":"b7f966100bb2b5c06f939c6c6dfce94ad83c62ab9053d2a2f80d0e2c20c229ca"},"schema_version":"1.0","source":{"id":"1408.3731","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.3731","created_at":"2026-05-18T02:38:45Z"},{"alias_kind":"arxiv_version","alias_value":"1408.3731v2","created_at":"2026-05-18T02:38:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.3731","created_at":"2026-05-18T02:38:45Z"},{"alias_kind":"pith_short_12","alias_value":"JYANT65SL7IV","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"JYANT65SL7IVPXE6","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"JYANT65S","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:d9e706dcc292cd0c65ccd7168fde7708b6d674f4ffc332b317b8973aae66a15a","target":"graph","created_at":"2026-05-18T02:38:45Z","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":"In this work, we present an application of the recently proposed unsupervised keyword extraction algorithm RAKE to a corpus of Polish legal texts from the field of public procurement. RAKE is essentially a language and domain independent method. Its only language-specific input is a stoplist containing a set of non-content words. The performance of the method heavily depends on the choice of such a stoplist, which should be domain adopted. Therefore, we complement RAKE algorithm with an automatic approach to selecting non-content words, which is based on the statistical properties of term dist","authors_text":"Micha{\\l} Jungiewicz, Micha{\\l} {\\L}opuszy\\'nski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2014-08-16T10:09:28Z","title":"Unsupervised Keyword Extraction from Polish Legal Texts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.3731","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:d22d5fc98777a21ebf812926871b43f919a1bc36ec7d7365e01707dbe4f9e923","target":"record","created_at":"2026-05-18T02:38:45Z","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":"1ac704d99bca72c520777bfff4376eacc697a9b75d90adb3099c2862c028e242","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2014-08-16T10:09:28Z","title_canon_sha256":"b7f966100bb2b5c06f939c6c6dfce94ad83c62ab9053d2a2f80d0e2c20c229ca"},"schema_version":"1.0","source":{"id":"1408.3731","kind":"arxiv","version":2}},"canonical_sha256":"4e00d9fbb25fd157dc9eb231c1ece91ebc377332e1667160560b9d1a503cba78","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4e00d9fbb25fd157dc9eb231c1ece91ebc377332e1667160560b9d1a503cba78","first_computed_at":"2026-05-18T02:38:45.850591Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:38:45.850591Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IAA1rAQz+MGYQyBn2dC3UIO190tESIuyY6iPJWfj39OVqxUgvo2ypA2qUWMS/i6V6/sFp+TPA61hn8ZKfIhSBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:38:45.851064Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.3731","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d22d5fc98777a21ebf812926871b43f919a1bc36ec7d7365e01707dbe4f9e923","sha256:d9e706dcc292cd0c65ccd7168fde7708b6d674f4ffc332b317b8973aae66a15a"],"state_sha256":"19e7c5dc367b8a545b68bccb887d26aa580171fe5b71131d304219769a07b4a1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GM19/PkraL2jxRt4bYdY22SIYQvvbNpsQpij6LgUQRL+bGPtCM5M+a1SAX8VDQHZnmCAY1eAZKZ8umMIEKa0Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T13:41:40.376801Z","bundle_sha256":"34e3c6dbd12fd31b21fd72590cf7570f5f1029c4fedb7fe193d2bd61811a8e26"}}