{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:ZNX4WNQNUMPEQUHNEXF6C7B6LQ","short_pith_number":"pith:ZNX4WNQN","schema_version":"1.0","canonical_sha256":"cb6fcb360da31e4850ed25cbe17c3e5c25537c5f71a897d65bea3e704703760f","source":{"kind":"arxiv","id":"2601.11467","version":2},"attestation_state":"computed","paper":{"title":"The XL Instances and the CVRPLib Best Known Solution Challenge","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.OC","authors_text":"Anand Subramanian, Eduardo Queiroga, Eduardo Uchoa, Rafael Martinelli, Thibaut Vidal","submitted_at":"2026-01-16T17:51:41Z","abstract_excerpt":"This paper introduces the XL set, a new collection of large-scale benchmark instances for the capacitated vehicle routing problem (CVRP). The set extends previous benchmarks by covering instances with 1,000 to 10,000 customers and a wide range of structural characteristics, following established generation principles from prior CVRP studies. To provide strong reference solutions, we conducted an extensive computational study with several state-of-the-art algorithms and retained the best solutions obtained as the starting point for a community-driven BKS challenge hosted on the CVRPLib website."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2601.11467","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2026-01-16T17:51:41Z","cross_cats_sorted":[],"title_canon_sha256":"ea20db36cf75cbd72d300a8d8d21c116ae952f2c28112e3e61301423f22d9513","abstract_canon_sha256":"331d657db5d3ba001587b781ddbbcf9424e604cfa4743524d655afb1f1abd42c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-08T01:18:24.483954Z","signature_b64":"+ig0pVfvJS+mn/ODFUSjp5iqhD4J3uCf3ZaRPCu0mwj8D/U5qXqntQ3PFr0+8UikyTNxaTC/9j43SWBkhZL7Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb6fcb360da31e4850ed25cbe17c3e5c25537c5f71a897d65bea3e704703760f","last_reissued_at":"2026-07-08T01:18:24.483377Z","signature_status":"signed_v1","first_computed_at":"2026-07-08T01:18:24.483377Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The XL Instances and the CVRPLib Best Known Solution Challenge","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.OC","authors_text":"Anand Subramanian, Eduardo Queiroga, Eduardo Uchoa, Rafael Martinelli, Thibaut Vidal","submitted_at":"2026-01-16T17:51:41Z","abstract_excerpt":"This paper introduces the XL set, a new collection of large-scale benchmark instances for the capacitated vehicle routing problem (CVRP). The set extends previous benchmarks by covering instances with 1,000 to 10,000 customers and a wide range of structural characteristics, following established generation principles from prior CVRP studies. To provide strong reference solutions, we conducted an extensive computational study with several state-of-the-art algorithms and retained the best solutions obtained as the starting point for a community-driven BKS challenge hosted on the CVRPLib website."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2601.11467","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2601.11467/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2601.11467","created_at":"2026-07-08T01:18:24.483445+00:00"},{"alias_kind":"arxiv_version","alias_value":"2601.11467v2","created_at":"2026-07-08T01:18:24.483445+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2601.11467","created_at":"2026-07-08T01:18:24.483445+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZNX4WNQNUMPE","created_at":"2026-07-08T01:18:24.483445+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZNX4WNQNUMPEQUHN","created_at":"2026-07-08T01:18:24.483445+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZNX4WNQN","created_at":"2026-07-08T01:18:24.483445+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ZNX4WNQNUMPEQUHNEXF6C7B6LQ","json":"https://pith.science/pith/ZNX4WNQNUMPEQUHNEXF6C7B6LQ.json","graph_json":"https://pith.science/api/pith-number/ZNX4WNQNUMPEQUHNEXF6C7B6LQ/graph.json","events_json":"https://pith.science/api/pith-number/ZNX4WNQNUMPEQUHNEXF6C7B6LQ/events.json","paper":"https://pith.science/paper/ZNX4WNQN"},"agent_actions":{"view_html":"https://pith.science/pith/ZNX4WNQNUMPEQUHNEXF6C7B6LQ","download_json":"https://pith.science/pith/ZNX4WNQNUMPEQUHNEXF6C7B6LQ.json","view_paper":"https://pith.science/paper/ZNX4WNQN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2601.11467&json=true","fetch_graph":"https://pith.science/api/pith-number/ZNX4WNQNUMPEQUHNEXF6C7B6LQ/graph.json","fetch_events":"https://pith.science/api/pith-number/ZNX4WNQNUMPEQUHNEXF6C7B6LQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZNX4WNQNUMPEQUHNEXF6C7B6LQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZNX4WNQNUMPEQUHNEXF6C7B6LQ/action/storage_attestation","attest_author":"https://pith.science/pith/ZNX4WNQNUMPEQUHNEXF6C7B6LQ/action/author_attestation","sign_citation":"https://pith.science/pith/ZNX4WNQNUMPEQUHNEXF6C7B6LQ/action/citation_signature","submit_replication":"https://pith.science/pith/ZNX4WNQNUMPEQUHNEXF6C7B6LQ/action/replication_record"}},"created_at":"2026-07-08T01:18:24.483445+00:00","updated_at":"2026-07-08T01:18:24.483445+00:00"}