{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QKBYVAFI2MJ57YCJFGWXGJNEIE","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":"532d55931e389649a7474a8e0f4376b2e91cdc974eb51d94525447d02bff45f4","cross_cats_sorted":["q-bio.PE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2018-03-21T17:12:51Z","title_canon_sha256":"7149996d48e6fa4350922b5132306ae348a7ff04152df5162575c190f28f4fe5"},"schema_version":"1.0","source":{"id":"1803.08015","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.08015","created_at":"2026-05-18T00:20:28Z"},{"alias_kind":"arxiv_version","alias_value":"1803.08015v1","created_at":"2026-05-18T00:20:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.08015","created_at":"2026-05-18T00:20:28Z"},{"alias_kind":"pith_short_12","alias_value":"QKBYVAFI2MJ5","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QKBYVAFI2MJ57YCJ","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QKBYVAFI","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:b3c8c6554cbc9c3c5c4ff8e8835b3e16716040e3cc77cb5fdebb6d3b7e996605","target":"graph","created_at":"2026-05-18T00:20:28Z","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":"We introduce a model for the global optimization problem of nectar harvesting by flower visitors, e.g., nectar-feeding bats, as a generalization of the (multiple) traveling-salesperson problem (TSP). The model includes multiple independent animals and many flowers with time-dependent content. This provides an ensemble of realistic combinatorial optimization problems, in contrast to previously studied models like random Satisfiability or standard TSP.\n  We numerically studied the optimum harvesting of these foragers, with parameters obtained from experiments, by using genetic algorithms. For th","authors_text":"A. K. Hartmann, H. Schawe, J. Thiele, M. Jungsbluth, Y. Winter","cross_cats":["q-bio.PE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2018-03-21T17:12:51Z","title":"Vertebrate pollinators: phase transition in a time-dependent generalized traveling-salesperson problem"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.08015","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:c8fe7f9e35688f7a4bedc511bc842ad471c587d4b35e688a32c5067a88b0670d","target":"record","created_at":"2026-05-18T00:20:28Z","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":"532d55931e389649a7474a8e0f4376b2e91cdc974eb51d94525447d02bff45f4","cross_cats_sorted":["q-bio.PE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2018-03-21T17:12:51Z","title_canon_sha256":"7149996d48e6fa4350922b5132306ae348a7ff04152df5162575c190f28f4fe5"},"schema_version":"1.0","source":{"id":"1803.08015","kind":"arxiv","version":1}},"canonical_sha256":"82838a80a8d313dfe04929ad7325a441132754315fa4d3064c8efab3daf28a56","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"82838a80a8d313dfe04929ad7325a441132754315fa4d3064c8efab3daf28a56","first_computed_at":"2026-05-18T00:20:28.247127Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:20:28.247127Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"We54kYT9lKoIGTdiaihv6Y5hJC8Q2suwsLWS4qtHSvS/ECQQ3NQPxUTaZ0tRvKgSMJ/lIzZyXLm8hClPRV5qBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:20:28.247665Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.08015","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c8fe7f9e35688f7a4bedc511bc842ad471c587d4b35e688a32c5067a88b0670d","sha256:b3c8c6554cbc9c3c5c4ff8e8835b3e16716040e3cc77cb5fdebb6d3b7e996605"],"state_sha256":"55f3da4a468124b22f9d23e311f3865cc7f463e60739b3a4325f309906993d27"}