{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:Y527RKVVF7WA44YPBGNN5UKYRQ","short_pith_number":"pith:Y527RKVV","canonical_record":{"source":{"id":"2106.08279","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2021-06-15T16:45:31Z","cross_cats_sorted":[],"title_canon_sha256":"3695e2f043faf613c6e94b3ebb6754ea7a645425ad1ce9fb79e66d7108005b71","abstract_canon_sha256":"c383350333be4b1467fc1449159dada266fc89b879b0e2c9ea1e123fd2aca866"},"schema_version":"1.0"},"canonical_sha256":"c775f8aab52fec0e730f099aded1588c1bd281347443ea260eb8e1b76e12dedf","source":{"kind":"arxiv","id":"2106.08279","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.08279","created_at":"2026-07-05T02:50:47Z"},{"alias_kind":"arxiv_version","alias_value":"2106.08279v3","created_at":"2026-07-05T02:50:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.08279","created_at":"2026-07-05T02:50:47Z"},{"alias_kind":"pith_short_12","alias_value":"Y527RKVVF7WA","created_at":"2026-07-05T02:50:47Z"},{"alias_kind":"pith_short_16","alias_value":"Y527RKVVF7WA44YP","created_at":"2026-07-05T02:50:47Z"},{"alias_kind":"pith_short_8","alias_value":"Y527RKVV","created_at":"2026-07-05T02:50:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:Y527RKVVF7WA44YPBGNN5UKYRQ","target":"record","payload":{"canonical_record":{"source":{"id":"2106.08279","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2021-06-15T16:45:31Z","cross_cats_sorted":[],"title_canon_sha256":"3695e2f043faf613c6e94b3ebb6754ea7a645425ad1ce9fb79e66d7108005b71","abstract_canon_sha256":"c383350333be4b1467fc1449159dada266fc89b879b0e2c9ea1e123fd2aca866"},"schema_version":"1.0"},"canonical_sha256":"c775f8aab52fec0e730f099aded1588c1bd281347443ea260eb8e1b76e12dedf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:50:47.511051Z","signature_b64":"ChBgDVxZ1Y4Utr4dK0UbLeSPiyKRNZeR+68EBZ6qwN6Ch+fZzGQXmqiZGO/vSjlEcwpbk26d8r1LoN3m8nqBCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c775f8aab52fec0e730f099aded1588c1bd281347443ea260eb8e1b76e12dedf","last_reissued_at":"2026-07-05T02:50:47.510649Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:50:47.510649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.08279","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:50:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"izQm5NQIVC1KF3zW+H8XA/8mtV+jmeQ2a7t6p7t4JgZmstHau91CZuArEwVHj6T23z7Ihugq3oeumEaOgzWQBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T02:47:53.507914Z"},"content_sha256":"5a5304eb0e56ed110e21b103c434a8cfedd15b91388443d19f4b9019b41e4bf2","schema_version":"1.0","event_id":"sha256:5a5304eb0e56ed110e21b103c434a8cfedd15b91388443d19f4b9019b41e4bf2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:Y527RKVVF7WA44YPBGNN5UKYRQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First Place Solution of KDD Cup 2021 & OGB Large-Scale Challenge Graph Prediction Track","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.LG","authors_text":"Chenglin Wu, Chengxuan Ying, Di He, Guolin Ke, Mingqi Yang, Shengjie Luo, Shuxin Zheng, Tianle Cai, Yanming Shen, Yuxin Wang","submitted_at":"2021-06-15T16:45:31Z","abstract_excerpt":"In this technical report, we present our solution of KDD Cup 2021 OGB Large-Scale Challenge - PCQM4M-LSC Track. We adopt Graphormer and ExpC as our basic models. We train each model by 8-fold cross-validation, and additionally train two Graphormer models on the union of training and validation sets with different random seeds. For final submission, we use a naive ensemble for these 18 models by taking average of their outputs. Using our method, our team MachineLearning achieved 0.1200 MAE on test set, which won the first place in KDD Cup graph prediction track."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.08279","kind":"arxiv","version":3},"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/2106.08279/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:50:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tNPiQVmMFTBNvaIqN7gfSK//aPmLSHWfjaGJeq9XUv8Ca8PogYwwhebXtxPQs4Qis4B/yV+3mrPs+V2TxCZ/DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T02:47:53.508444Z"},"content_sha256":"68e8255bc1ba0f1b933ffe72b9a8d045697c157fa303b759b1b32a3254b38f03","schema_version":"1.0","event_id":"sha256:68e8255bc1ba0f1b933ffe72b9a8d045697c157fa303b759b1b32a3254b38f03"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y527RKVVF7WA44YPBGNN5UKYRQ/bundle.json","state_url":"https://pith.science/pith/Y527RKVVF7WA44YPBGNN5UKYRQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y527RKVVF7WA44YPBGNN5UKYRQ/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":"2026-08-06T02:47:53Z","links":{"resolver":"https://pith.science/pith/Y527RKVVF7WA44YPBGNN5UKYRQ","bundle":"https://pith.science/pith/Y527RKVVF7WA44YPBGNN5UKYRQ/bundle.json","state":"https://pith.science/pith/Y527RKVVF7WA44YPBGNN5UKYRQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y527RKVVF7WA44YPBGNN5UKYRQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:Y527RKVVF7WA44YPBGNN5UKYRQ","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":"c383350333be4b1467fc1449159dada266fc89b879b0e2c9ea1e123fd2aca866","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2021-06-15T16:45:31Z","title_canon_sha256":"3695e2f043faf613c6e94b3ebb6754ea7a645425ad1ce9fb79e66d7108005b71"},"schema_version":"1.0","source":{"id":"2106.08279","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.08279","created_at":"2026-07-05T02:50:47Z"},{"alias_kind":"arxiv_version","alias_value":"2106.08279v3","created_at":"2026-07-05T02:50:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.08279","created_at":"2026-07-05T02:50:47Z"},{"alias_kind":"pith_short_12","alias_value":"Y527RKVVF7WA","created_at":"2026-07-05T02:50:47Z"},{"alias_kind":"pith_short_16","alias_value":"Y527RKVVF7WA44YP","created_at":"2026-07-05T02:50:47Z"},{"alias_kind":"pith_short_8","alias_value":"Y527RKVV","created_at":"2026-07-05T02:50:47Z"}],"graph_snapshots":[{"event_id":"sha256:68e8255bc1ba0f1b933ffe72b9a8d045697c157fa303b759b1b32a3254b38f03","target":"graph","created_at":"2026-07-05T02:50:47Z","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/2106.08279/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this technical report, we present our solution of KDD Cup 2021 OGB Large-Scale Challenge - PCQM4M-LSC Track. We adopt Graphormer and ExpC as our basic models. We train each model by 8-fold cross-validation, and additionally train two Graphormer models on the union of training and validation sets with different random seeds. For final submission, we use a naive ensemble for these 18 models by taking average of their outputs. Using our method, our team MachineLearning achieved 0.1200 MAE on test set, which won the first place in KDD Cup graph prediction track.","authors_text":"Chenglin Wu, Chengxuan Ying, Di He, Guolin Ke, Mingqi Yang, Shengjie Luo, Shuxin Zheng, Tianle Cai, Yanming Shen, Yuxin Wang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2021-06-15T16:45:31Z","title":"First Place Solution of KDD Cup 2021 & OGB Large-Scale Challenge Graph Prediction Track"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.08279","kind":"arxiv","version":3},"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":"sha256:5a5304eb0e56ed110e21b103c434a8cfedd15b91388443d19f4b9019b41e4bf2","target":"record","created_at":"2026-07-05T02:50:47Z","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":"c383350333be4b1467fc1449159dada266fc89b879b0e2c9ea1e123fd2aca866","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2021-06-15T16:45:31Z","title_canon_sha256":"3695e2f043faf613c6e94b3ebb6754ea7a645425ad1ce9fb79e66d7108005b71"},"schema_version":"1.0","source":{"id":"2106.08279","kind":"arxiv","version":3}},"canonical_sha256":"c775f8aab52fec0e730f099aded1588c1bd281347443ea260eb8e1b76e12dedf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c775f8aab52fec0e730f099aded1588c1bd281347443ea260eb8e1b76e12dedf","first_computed_at":"2026-07-05T02:50:47.510649Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:50:47.510649Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ChBgDVxZ1Y4Utr4dK0UbLeSPiyKRNZeR+68EBZ6qwN6Ch+fZzGQXmqiZGO/vSjlEcwpbk26d8r1LoN3m8nqBCg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:50:47.511051Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.08279","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a5304eb0e56ed110e21b103c434a8cfedd15b91388443d19f4b9019b41e4bf2","sha256:68e8255bc1ba0f1b933ffe72b9a8d045697c157fa303b759b1b32a3254b38f03"],"state_sha256":"e5321bcfb76e2b320a66fc3d1d90ac0bc8f1c741f33f89fe614c4e0bd102d419"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wZ8iT6i6YaSAJNNcBwUH+k+0nct7jVf2k01eCglYxuIVDf1zL57rqGfupATcS02y5AMHdS/WuQRBnDSYzoATBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T02:47:53.511480Z","bundle_sha256":"7d3682cfc60ce4df48ea268c8972fe97169f5b96885df3975a3335b034785ee3"}}