{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:Y7JIJIL43CN3CWZ63NX5ZXB2UI","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":"d5727864d96ba7e2f41bdcce8413979a1a28c6e506a27d60a5ed80fb96c6ceea","cross_cats_sorted":["cs.SY","eess.SY"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CG","submitted_at":"2022-06-30T08:26:18Z","title_canon_sha256":"de65e84477842bb0485ee536920b930c886a4e55790d81cc844291e933dd2b81"},"schema_version":"1.0","source":{"id":"2206.15116","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.15116","created_at":"2026-07-05T04:36:25Z"},{"alias_kind":"arxiv_version","alias_value":"2206.15116v1","created_at":"2026-07-05T04:36:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.15116","created_at":"2026-07-05T04:36:25Z"},{"alias_kind":"pith_short_12","alias_value":"Y7JIJIL43CN3","created_at":"2026-07-05T04:36:25Z"},{"alias_kind":"pith_short_16","alias_value":"Y7JIJIL43CN3CWZ6","created_at":"2026-07-05T04:36:25Z"},{"alias_kind":"pith_short_8","alias_value":"Y7JIJIL4","created_at":"2026-07-05T04:36:25Z"}],"graph_snapshots":[{"event_id":"sha256:c6698543a73737927aa6bd5e56629d8477065066930021a2ab0b71828426fc69","target":"graph","created_at":"2026-07-05T04:36:25Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2206.15116/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The three-dimensional bin packing problem (3D-BPP) plays an important role in city logistics and manufacturing environments, due to its direct relevance to operational cost. Most existing literature have investigated the conventional 3D-BPP, in which the shape of items are typically considered as regular shapes, e.g., rectangular-shaped rigid boxes or cylindrical-shaped containers. However, 3D-BPP for non-rectangular shaped items are quite common in varies delivery schemes, especially in fresh food delivery, and few published studies focusing on these issues. In this paper, we address a novel ","authors_text":"Qiruyi Zuo, Wai Kin Victor Chan, Xinglu Liu","cross_cats":["cs.SY","eess.SY"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CG","submitted_at":"2022-06-30T08:26:18Z","title":"A Constructive Heuristic Algorithm for 3D Bin Packing of Irregular Shaped Items"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.15116","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":"sha256:0e5c7a71d529367885a6dc9b309a8f7bc2734d926186743b84f5dfd117ff1026","target":"record","created_at":"2026-07-05T04:36:25Z","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":"d5727864d96ba7e2f41bdcce8413979a1a28c6e506a27d60a5ed80fb96c6ceea","cross_cats_sorted":["cs.SY","eess.SY"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CG","submitted_at":"2022-06-30T08:26:18Z","title_canon_sha256":"de65e84477842bb0485ee536920b930c886a4e55790d81cc844291e933dd2b81"},"schema_version":"1.0","source":{"id":"2206.15116","kind":"arxiv","version":1}},"canonical_sha256":"c7d284a17cd89bb15b3edb6fdcdc3aa2306a41dead4a073f082d37f9c1d5008f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c7d284a17cd89bb15b3edb6fdcdc3aa2306a41dead4a073f082d37f9c1d5008f","first_computed_at":"2026-07-05T04:36:25.622644Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:36:25.622644Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Akdq5rTp9zN5sOg2EVT/JWYpwD2jSxpb6SiCc6uPgSCp0wLyCwQw6WsFYTlG3iuxpzMR/rzdBPpASNOrPgu6AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:36:25.623107Z","signed_message":"canonical_sha256_bytes"},"source_id":"2206.15116","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0e5c7a71d529367885a6dc9b309a8f7bc2734d926186743b84f5dfd117ff1026","sha256:c6698543a73737927aa6bd5e56629d8477065066930021a2ab0b71828426fc69"],"state_sha256":"241dcf45ef55b1c7abbba15e448b423f48dc4b1e4c36021391a42591a03da29e"}