{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:K2HBB2MSOLUGPJ7PEOPU34OD2O","short_pith_number":"pith:K2HBB2MS","canonical_record":{"source":{"id":"1208.5340","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-08-27T08:58:46Z","cross_cats_sorted":["cs.NE"],"title_canon_sha256":"8d7c72edcd46e61f775b84d89b0c66d35c1f05d5b58efca3cb7f50bea1720e8a","abstract_canon_sha256":"ab501cf75af3e97313525744d08a8cfdcc3bf694fa7919731b4132fea6052b45"},"schema_version":"1.0"},"canonical_sha256":"568e10e99272e867a7ef239f4df1c3d3acc2f17cb7c0598a942a6f8292941030","source":{"kind":"arxiv","id":"1208.5340","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.5340","created_at":"2026-05-18T03:46:59Z"},{"alias_kind":"arxiv_version","alias_value":"1208.5340v1","created_at":"2026-05-18T03:46:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5340","created_at":"2026-05-18T03:46:59Z"},{"alias_kind":"pith_short_12","alias_value":"K2HBB2MSOLUG","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"K2HBB2MSOLUGPJ7P","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"K2HBB2MS","created_at":"2026-05-18T12:27:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:K2HBB2MSOLUGPJ7PEOPU34OD2O","target":"record","payload":{"canonical_record":{"source":{"id":"1208.5340","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-08-27T08:58:46Z","cross_cats_sorted":["cs.NE"],"title_canon_sha256":"8d7c72edcd46e61f775b84d89b0c66d35c1f05d5b58efca3cb7f50bea1720e8a","abstract_canon_sha256":"ab501cf75af3e97313525744d08a8cfdcc3bf694fa7919731b4132fea6052b45"},"schema_version":"1.0"},"canonical_sha256":"568e10e99272e867a7ef239f4df1c3d3acc2f17cb7c0598a942a6f8292941030","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:46:59.722313Z","signature_b64":"LqqtgcxDFo9cpSPYigFSwdPKPINgpFEL7wYTt6iq0BZ8m2TK8+6EkNW5a3MP6l41Xm+ShRwrpF1Wr4gRnSczCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"568e10e99272e867a7ef239f4df1c3d3acc2f17cb7c0598a942a6f8292941030","last_reissued_at":"2026-05-18T03:46:59.721305Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:46:59.721305Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.5340","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":"2026-05-18T03:46:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z5heVXLT+2MZC9Ml34vjDHPNtdQPU4xvLRgZwGT9yMwe5qprfVitz2CB5KHVf1BNcqA3YKz3vnSXZAPo/dVXDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T18:52:51.844088Z"},"content_sha256":"cacd8484f1c2d9a3da37b354a4540ded9cf96d54dd5f28a800676f526acd4450","schema_version":"1.0","event_id":"sha256:cacd8484f1c2d9a3da37b354a4540ded9cf96d54dd5f28a800676f526acd4450"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:K2HBB2MSOLUGPJ7PEOPU34OD2O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"New results of ant algorithms for the Linear Ordering Problem","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NE"],"primary_cat":"cs.AI","authors_text":"Camelia Chira, Camelia-M. Pintea, D. Dumitrescu","submitted_at":"2012-08-27T08:58:46Z","abstract_excerpt":"Ant-based algorithms are successful tools for solving complex problems. One of these problems is the Linear Ordering Problem (LOP). The paper shows new results on some LOP instances, using Ant Colony System (ACS) and the Step-Back Sensitive Ant Model (SB-SAM)."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5340","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":"2026-05-18T03:46:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vzlOGg4C7oMAcS9TJUT1rR1ELZ2ryjj8/OCgPEXwdnHeuY+TfQxzw12KBNrJHHn+HYAhOlA4NE1GDnuzSYGjAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T18:52:51.844470Z"},"content_sha256":"694a332d09260bb7653b640714fb2670c505886a5dfb3e5fc24d5ce132e50afe","schema_version":"1.0","event_id":"sha256:694a332d09260bb7653b640714fb2670c505886a5dfb3e5fc24d5ce132e50afe"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K2HBB2MSOLUGPJ7PEOPU34OD2O/bundle.json","state_url":"https://pith.science/pith/K2HBB2MSOLUGPJ7PEOPU34OD2O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K2HBB2MSOLUGPJ7PEOPU34OD2O/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":"2026-06-25T18:52:51Z","links":{"resolver":"https://pith.science/pith/K2HBB2MSOLUGPJ7PEOPU34OD2O","bundle":"https://pith.science/pith/K2HBB2MSOLUGPJ7PEOPU34OD2O/bundle.json","state":"https://pith.science/pith/K2HBB2MSOLUGPJ7PEOPU34OD2O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K2HBB2MSOLUGPJ7PEOPU34OD2O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:K2HBB2MSOLUGPJ7PEOPU34OD2O","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":"ab501cf75af3e97313525744d08a8cfdcc3bf694fa7919731b4132fea6052b45","cross_cats_sorted":["cs.NE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-08-27T08:58:46Z","title_canon_sha256":"8d7c72edcd46e61f775b84d89b0c66d35c1f05d5b58efca3cb7f50bea1720e8a"},"schema_version":"1.0","source":{"id":"1208.5340","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.5340","created_at":"2026-05-18T03:46:59Z"},{"alias_kind":"arxiv_version","alias_value":"1208.5340v1","created_at":"2026-05-18T03:46:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5340","created_at":"2026-05-18T03:46:59Z"},{"alias_kind":"pith_short_12","alias_value":"K2HBB2MSOLUG","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"K2HBB2MSOLUGPJ7P","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"K2HBB2MS","created_at":"2026-05-18T12:27:11Z"}],"graph_snapshots":[{"event_id":"sha256:694a332d09260bb7653b640714fb2670c505886a5dfb3e5fc24d5ce132e50afe","target":"graph","created_at":"2026-05-18T03:46:59Z","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":"Ant-based algorithms are successful tools for solving complex problems. One of these problems is the Linear Ordering Problem (LOP). The paper shows new results on some LOP instances, using Ant Colony System (ACS) and the Step-Back Sensitive Ant Model (SB-SAM).","authors_text":"Camelia Chira, Camelia-M. Pintea, D. Dumitrescu","cross_cats":["cs.NE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-08-27T08:58:46Z","title":"New results of ant algorithms for the Linear Ordering Problem"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5340","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:cacd8484f1c2d9a3da37b354a4540ded9cf96d54dd5f28a800676f526acd4450","target":"record","created_at":"2026-05-18T03:46:59Z","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":"ab501cf75af3e97313525744d08a8cfdcc3bf694fa7919731b4132fea6052b45","cross_cats_sorted":["cs.NE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2012-08-27T08:58:46Z","title_canon_sha256":"8d7c72edcd46e61f775b84d89b0c66d35c1f05d5b58efca3cb7f50bea1720e8a"},"schema_version":"1.0","source":{"id":"1208.5340","kind":"arxiv","version":1}},"canonical_sha256":"568e10e99272e867a7ef239f4df1c3d3acc2f17cb7c0598a942a6f8292941030","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"568e10e99272e867a7ef239f4df1c3d3acc2f17cb7c0598a942a6f8292941030","first_computed_at":"2026-05-18T03:46:59.721305Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:46:59.721305Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LqqtgcxDFo9cpSPYigFSwdPKPINgpFEL7wYTt6iq0BZ8m2TK8+6EkNW5a3MP6l41Xm+ShRwrpF1Wr4gRnSczCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:46:59.722313Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.5340","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cacd8484f1c2d9a3da37b354a4540ded9cf96d54dd5f28a800676f526acd4450","sha256:694a332d09260bb7653b640714fb2670c505886a5dfb3e5fc24d5ce132e50afe"],"state_sha256":"50742c84cd8a4eff65cccc5699487141e20d64011e29d44164e3ba11f7723cb5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WOSMfOfj9dJ/IY0sdi/G/k31qsn9WXdeshnSNhtGWu2CprvIo+k+mtlG/GLUzUO6/1eBimWTVAf1h2EwfCwcBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T18:52:51.846502Z","bundle_sha256":"a9ecb926fe6ecb2279be7b1df11d1b3b41fd2ac42728be51cce51a34aefedc84"}}