{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:LQNCGTLC4DC3MPCS5KQER4G44U","short_pith_number":"pith:LQNCGTLC","canonical_record":{"source":{"id":"1511.03759","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2015-11-12T02:20:53Z","cross_cats_sorted":["cs.IR"],"title_canon_sha256":"23b7e51c222fddfcef18ddaa3e028fdf8c46aac4647013f6020c79cf081eb169","abstract_canon_sha256":"2a2e77f9ab0cb24ff2dc8f6de52ecf74e5bf632866af13086c6876fa64f751a0"},"schema_version":"1.0"},"canonical_sha256":"5c1a234d62e0c5b63c52eaa048f0dce518c6211342d56e6d8449835adb4351c2","source":{"kind":"arxiv","id":"1511.03759","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.03759","created_at":"2026-05-18T01:27:06Z"},{"alias_kind":"arxiv_version","alias_value":"1511.03759v1","created_at":"2026-05-18T01:27:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.03759","created_at":"2026-05-18T01:27:06Z"},{"alias_kind":"pith_short_12","alias_value":"LQNCGTLC4DC3","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LQNCGTLC4DC3MPCS","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LQNCGTLC","created_at":"2026-05-18T12:29:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:LQNCGTLC4DC3MPCS5KQER4G44U","target":"record","payload":{"canonical_record":{"source":{"id":"1511.03759","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2015-11-12T02:20:53Z","cross_cats_sorted":["cs.IR"],"title_canon_sha256":"23b7e51c222fddfcef18ddaa3e028fdf8c46aac4647013f6020c79cf081eb169","abstract_canon_sha256":"2a2e77f9ab0cb24ff2dc8f6de52ecf74e5bf632866af13086c6876fa64f751a0"},"schema_version":"1.0"},"canonical_sha256":"5c1a234d62e0c5b63c52eaa048f0dce518c6211342d56e6d8449835adb4351c2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:06.874815Z","signature_b64":"PY0flOFBgcnHsKJ9JUl2h+ePtG06T7625olPoHN9YtW+TdZm+NCtSjwlvkA3kqccaR49jUjjvJbHR/g2EbVMCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5c1a234d62e0c5b63c52eaa048f0dce518c6211342d56e6d8449835adb4351c2","last_reissued_at":"2026-05-18T01:27:06.874290Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:06.874290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.03759","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":"2026-05-18T01:27:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iEuzi6zF+8IzQ2LapVZ0FxgtTdqbPn6KYMOJQ4SPc07v1wNKEHBXiDDY6vUGdOjRlMhmzGpoewJXo73GJ/L9Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T10:34:34.252971Z"},"content_sha256":"a11cc4279dd5bc38708f057dad5ff57225bc854dd65d0be437e8322a3f48441b","schema_version":"1.0","event_id":"sha256:a11cc4279dd5bc38708f057dad5ff57225bc854dd65d0be437e8322a3f48441b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:LQNCGTLC4DC3MPCS5KQER4G44U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Integrating Heterogeneous Information via Flexible Regularization Framework for Recommendation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IR"],"primary_cat":"cs.SI","authors_text":"Bin Wu, Chuan Shi, Fuzhen Zhuang, Jian Liu, Philip S. Yu","submitted_at":"2015-11-12T02:20:53Z","abstract_excerpt":"Recently, there is a surge of social recommendation, which leverages social relations among users to improve recommendation performance. However, in many applications, social relations are absent or very sparse. Meanwhile, the attribute information of users or items may be rich. It is a big challenge to exploit these attribute information for the improvement of recommendation performance. In this paper, we organize objects and relations in recommendation system as a heterogeneous information network, and introduce meta path based similarity measure to evaluate the similarity of users or items."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.03759","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":"2026-05-18T01:27:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w9pZdzL1Q+Abvr/JMB/Yz6JYOLBVRVlmpVbY7QDMbHBnsL2u+VuivDnwe1Prc/Fuj2SMICCbY2Qap9kA5MJ4Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T10:34:34.253734Z"},"content_sha256":"a6487c5d72edaf3848152742a14ab7680c82cd8a1fba5dee160e7b8a7c3cefe3","schema_version":"1.0","event_id":"sha256:a6487c5d72edaf3848152742a14ab7680c82cd8a1fba5dee160e7b8a7c3cefe3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LQNCGTLC4DC3MPCS5KQER4G44U/bundle.json","state_url":"https://pith.science/pith/LQNCGTLC4DC3MPCS5KQER4G44U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LQNCGTLC4DC3MPCS5KQER4G44U/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":"2026-05-23T10:34:34Z","links":{"resolver":"https://pith.science/pith/LQNCGTLC4DC3MPCS5KQER4G44U","bundle":"https://pith.science/pith/LQNCGTLC4DC3MPCS5KQER4G44U/bundle.json","state":"https://pith.science/pith/LQNCGTLC4DC3MPCS5KQER4G44U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LQNCGTLC4DC3MPCS5KQER4G44U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:LQNCGTLC4DC3MPCS5KQER4G44U","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":"2a2e77f9ab0cb24ff2dc8f6de52ecf74e5bf632866af13086c6876fa64f751a0","cross_cats_sorted":["cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2015-11-12T02:20:53Z","title_canon_sha256":"23b7e51c222fddfcef18ddaa3e028fdf8c46aac4647013f6020c79cf081eb169"},"schema_version":"1.0","source":{"id":"1511.03759","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.03759","created_at":"2026-05-18T01:27:06Z"},{"alias_kind":"arxiv_version","alias_value":"1511.03759v1","created_at":"2026-05-18T01:27:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.03759","created_at":"2026-05-18T01:27:06Z"},{"alias_kind":"pith_short_12","alias_value":"LQNCGTLC4DC3","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LQNCGTLC4DC3MPCS","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LQNCGTLC","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:a6487c5d72edaf3848152742a14ab7680c82cd8a1fba5dee160e7b8a7c3cefe3","target":"graph","created_at":"2026-05-18T01:27:06Z","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":"Recently, there is a surge of social recommendation, which leverages social relations among users to improve recommendation performance. However, in many applications, social relations are absent or very sparse. Meanwhile, the attribute information of users or items may be rich. It is a big challenge to exploit these attribute information for the improvement of recommendation performance. In this paper, we organize objects and relations in recommendation system as a heterogeneous information network, and introduce meta path based similarity measure to evaluate the similarity of users or items.","authors_text":"Bin Wu, Chuan Shi, Fuzhen Zhuang, Jian Liu, Philip S. Yu","cross_cats":["cs.IR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2015-11-12T02:20:53Z","title":"Integrating Heterogeneous Information via Flexible Regularization Framework for Recommendation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.03759","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:a11cc4279dd5bc38708f057dad5ff57225bc854dd65d0be437e8322a3f48441b","target":"record","created_at":"2026-05-18T01:27:06Z","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":"2a2e77f9ab0cb24ff2dc8f6de52ecf74e5bf632866af13086c6876fa64f751a0","cross_cats_sorted":["cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2015-11-12T02:20:53Z","title_canon_sha256":"23b7e51c222fddfcef18ddaa3e028fdf8c46aac4647013f6020c79cf081eb169"},"schema_version":"1.0","source":{"id":"1511.03759","kind":"arxiv","version":1}},"canonical_sha256":"5c1a234d62e0c5b63c52eaa048f0dce518c6211342d56e6d8449835adb4351c2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5c1a234d62e0c5b63c52eaa048f0dce518c6211342d56e6d8449835adb4351c2","first_computed_at":"2026-05-18T01:27:06.874290Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:27:06.874290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PY0flOFBgcnHsKJ9JUl2h+ePtG06T7625olPoHN9YtW+TdZm+NCtSjwlvkA3kqccaR49jUjjvJbHR/g2EbVMCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:27:06.874815Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.03759","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a11cc4279dd5bc38708f057dad5ff57225bc854dd65d0be437e8322a3f48441b","sha256:a6487c5d72edaf3848152742a14ab7680c82cd8a1fba5dee160e7b8a7c3cefe3"],"state_sha256":"abecfa9d5677d586bee9897de999a033446cdd8920869d30018187d95704f75c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ujXAk/Z3TsqO/1VPHCDoV4rfITfD0hDijDUuVwBz6ewRoor+MeZ584/sBoX3nbmnRzQ9iMOpOmbbvfKEBOoABg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T10:34:34.258209Z","bundle_sha256":"c0c88be10a5fdff71896ea29315f131ecf9d1abbd84c1a2594e772fd9f29795c"}}