{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:DW6UNF7IPGIA4KLCJKZWSAQBNN","short_pith_number":"pith:DW6UNF7I","canonical_record":{"source":{"id":"1303.6369","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2013-03-26T02:32:15Z","cross_cats_sorted":["cs.SI","physics.soc-ph"],"title_canon_sha256":"07f464f975768f1389828e5135ea8367ef39466debf113bab0df780087d96995","abstract_canon_sha256":"c743304667489e7da5f1bd9d2b4cc2c9ba154a23b75fd01a57bf74b242f5ed27"},"schema_version":"1.0"},"canonical_sha256":"1dbd4697e879900e29624ab36902016b6afafce54d29af729476e418f506afc6","source":{"kind":"arxiv","id":"1303.6369","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.6369","created_at":"2026-05-18T01:50:52Z"},{"alias_kind":"arxiv_version","alias_value":"1303.6369v1","created_at":"2026-05-18T01:50:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.6369","created_at":"2026-05-18T01:50:52Z"},{"alias_kind":"pith_short_12","alias_value":"DW6UNF7IPGIA","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"DW6UNF7IPGIA4KLC","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"DW6UNF7I","created_at":"2026-05-18T12:27:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:DW6UNF7IPGIA4KLCJKZWSAQBNN","target":"record","payload":{"canonical_record":{"source":{"id":"1303.6369","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2013-03-26T02:32:15Z","cross_cats_sorted":["cs.SI","physics.soc-ph"],"title_canon_sha256":"07f464f975768f1389828e5135ea8367ef39466debf113bab0df780087d96995","abstract_canon_sha256":"c743304667489e7da5f1bd9d2b4cc2c9ba154a23b75fd01a57bf74b242f5ed27"},"schema_version":"1.0"},"canonical_sha256":"1dbd4697e879900e29624ab36902016b6afafce54d29af729476e418f506afc6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:50:52.833948Z","signature_b64":"x5D9n7ap+dgPQhd0LYRs1qgY3cfFKCVzpwo4AASqZIveCfK9MwHbf6QrcxPWtD4TmSK+nsW/rObqE8FgO2fcBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1dbd4697e879900e29624ab36902016b6afafce54d29af729476e418f506afc6","last_reissued_at":"2026-05-18T01:50:52.833304Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:50:52.833304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1303.6369","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":"2026-05-18T01:50:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wYFrvwDzA1XAUqcwQI8IPasrSA7UPPRGuoDrGnTWfqKvJ7476p8ecl+LToTmOguQtITzcWwD6YEKTojcYwXYBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T05:06:39.056870Z"},"content_sha256":"4590735c727868e674fdab6fb2cc35fac318e59bc9e901087d4d419301a723b9","schema_version":"1.0","event_id":"sha256:4590735c727868e674fdab6fb2cc35fac318e59bc9e901087d4d419301a723b9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:DW6UNF7IPGIA4KLCJKZWSAQBNN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Extracting the information backbone in online system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SI","physics.soc-ph"],"primary_cat":"cs.IR","authors_text":"An Zeng, Ming-Sheng Shang, Qian-Ming Zhang","submitted_at":"2013-03-26T02:32:15Z","abstract_excerpt":"Information overload is a serious problem in modern society and many solutions such as recommender system have been proposed to filter out irrelevant information. In the literature, researchers mainly dedicated to improve the recommendation performance (accuracy and diversity) of the algorithms while overlooked the influence of topology of the online user-object bipartite networks. In this paper, we find that some information provided by the bipartite networks is not only redundant but also misleading. With such \"less can be more\" feature, we design some algorithms to improve the recommendatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.6369","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":"2026-05-18T01:50:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vlUQYnV/Kq2Bm7osfuQJ0U/IW+iWV0HllcU+X79esLLRGrLBJJMAIVoC6QQAoTomjmyz3Zzv7sRiRrcSeCMGDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T05:06:39.057218Z"},"content_sha256":"07e5c869b387ec8be78c5fb445806ada3f577fe4e296269c9ce29dc6313cc11e","schema_version":"1.0","event_id":"sha256:07e5c869b387ec8be78c5fb445806ada3f577fe4e296269c9ce29dc6313cc11e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DW6UNF7IPGIA4KLCJKZWSAQBNN/bundle.json","state_url":"https://pith.science/pith/DW6UNF7IPGIA4KLCJKZWSAQBNN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DW6UNF7IPGIA4KLCJKZWSAQBNN/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":"2026-06-20T05:06:39Z","links":{"resolver":"https://pith.science/pith/DW6UNF7IPGIA4KLCJKZWSAQBNN","bundle":"https://pith.science/pith/DW6UNF7IPGIA4KLCJKZWSAQBNN/bundle.json","state":"https://pith.science/pith/DW6UNF7IPGIA4KLCJKZWSAQBNN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DW6UNF7IPGIA4KLCJKZWSAQBNN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:DW6UNF7IPGIA4KLCJKZWSAQBNN","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":"c743304667489e7da5f1bd9d2b4cc2c9ba154a23b75fd01a57bf74b242f5ed27","cross_cats_sorted":["cs.SI","physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2013-03-26T02:32:15Z","title_canon_sha256":"07f464f975768f1389828e5135ea8367ef39466debf113bab0df780087d96995"},"schema_version":"1.0","source":{"id":"1303.6369","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.6369","created_at":"2026-05-18T01:50:52Z"},{"alias_kind":"arxiv_version","alias_value":"1303.6369v1","created_at":"2026-05-18T01:50:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.6369","created_at":"2026-05-18T01:50:52Z"},{"alias_kind":"pith_short_12","alias_value":"DW6UNF7IPGIA","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"DW6UNF7IPGIA4KLC","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"DW6UNF7I","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:07e5c869b387ec8be78c5fb445806ada3f577fe4e296269c9ce29dc6313cc11e","target":"graph","created_at":"2026-05-18T01:50:52Z","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":"Information overload is a serious problem in modern society and many solutions such as recommender system have been proposed to filter out irrelevant information. In the literature, researchers mainly dedicated to improve the recommendation performance (accuracy and diversity) of the algorithms while overlooked the influence of topology of the online user-object bipartite networks. In this paper, we find that some information provided by the bipartite networks is not only redundant but also misleading. With such \"less can be more\" feature, we design some algorithms to improve the recommendatio","authors_text":"An Zeng, Ming-Sheng Shang, Qian-Ming Zhang","cross_cats":["cs.SI","physics.soc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2013-03-26T02:32:15Z","title":"Extracting the information backbone in online system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.6369","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":"sha256:4590735c727868e674fdab6fb2cc35fac318e59bc9e901087d4d419301a723b9","target":"record","created_at":"2026-05-18T01:50:52Z","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":"c743304667489e7da5f1bd9d2b4cc2c9ba154a23b75fd01a57bf74b242f5ed27","cross_cats_sorted":["cs.SI","physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2013-03-26T02:32:15Z","title_canon_sha256":"07f464f975768f1389828e5135ea8367ef39466debf113bab0df780087d96995"},"schema_version":"1.0","source":{"id":"1303.6369","kind":"arxiv","version":1}},"canonical_sha256":"1dbd4697e879900e29624ab36902016b6afafce54d29af729476e418f506afc6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1dbd4697e879900e29624ab36902016b6afafce54d29af729476e418f506afc6","first_computed_at":"2026-05-18T01:50:52.833304Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:52.833304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x5D9n7ap+dgPQhd0LYRs1qgY3cfFKCVzpwo4AASqZIveCfK9MwHbf6QrcxPWtD4TmSK+nsW/rObqE8FgO2fcBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:52.833948Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.6369","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4590735c727868e674fdab6fb2cc35fac318e59bc9e901087d4d419301a723b9","sha256:07e5c869b387ec8be78c5fb445806ada3f577fe4e296269c9ce29dc6313cc11e"],"state_sha256":"afada8bb8044e7e96e43c37696f5313419b6f57f3def29110dd965b2b1b7bd4a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gU9MgiI/N2Ego38xZD4KmgsIzSIiiIUdHyq/Hpz9CT3CzUao09fShTPxKOQPfuA2G8mneSHpZ2ZvS4inzGgNCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T05:06:39.059181Z","bundle_sha256":"9ba87c60faa0e35a72ab0a41653dcbb74aabeaa3580f1e2261e5573d25488b55"}}