{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:E5ZIU4HHKBTD66U2SMDMHUZIRN","short_pith_number":"pith:E5ZIU4HH","canonical_record":{"source":{"id":"1906.09081","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-06-21T11:39:48Z","cross_cats_sorted":["physics.soc-ph"],"title_canon_sha256":"4fd9eb356c3a1356d3113bd6b194299008efb990d185006e0ffabccbfbc3bf69","abstract_canon_sha256":"0358c9674a0734475bb272028b96f5f079fb79c4177034d4be16cf3665be8736"},"schema_version":"1.0"},"canonical_sha256":"27728a70e750663f7a9a9306c3d3288b64592b0d342763054463459a187ad4b7","source":{"kind":"arxiv","id":"1906.09081","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.09081","created_at":"2026-05-17T23:42:44Z"},{"alias_kind":"arxiv_version","alias_value":"1906.09081v1","created_at":"2026-05-17T23:42:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.09081","created_at":"2026-05-17T23:42:44Z"},{"alias_kind":"pith_short_12","alias_value":"E5ZIU4HHKBTD","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"E5ZIU4HHKBTD66U2","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"E5ZIU4HH","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:E5ZIU4HHKBTD66U2SMDMHUZIRN","target":"record","payload":{"canonical_record":{"source":{"id":"1906.09081","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-06-21T11:39:48Z","cross_cats_sorted":["physics.soc-ph"],"title_canon_sha256":"4fd9eb356c3a1356d3113bd6b194299008efb990d185006e0ffabccbfbc3bf69","abstract_canon_sha256":"0358c9674a0734475bb272028b96f5f079fb79c4177034d4be16cf3665be8736"},"schema_version":"1.0"},"canonical_sha256":"27728a70e750663f7a9a9306c3d3288b64592b0d342763054463459a187ad4b7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:44.629287Z","signature_b64":"kVPJTmZdsvTzonHtKi0ctjDGLD8/R8D1wbHKb4qgf4O7QKGN4IWKdAVYDqpkznBAlwwAM0Ogn4t7+m1lgtscCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"27728a70e750663f7a9a9306c3d3288b64592b0d342763054463459a187ad4b7","last_reissued_at":"2026-05-17T23:42:44.628688Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:44.628688Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.09081","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":"2026-05-17T23:42:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HbnRcwIQLulLRlp/wLcyD7vnttls8krEvzqUu3xN5oKYhfQuE+US82Pag5qbRje435bC2i2ps/J/6YAXRdzlBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T03:15:35.616974Z"},"content_sha256":"9c188fba1c827f42756be310591c2ccdd2ee74625b0a85eb619f50a13f3f8a56","schema_version":"1.0","event_id":"sha256:9c188fba1c827f42756be310591c2ccdd2ee74625b0a85eb619f50a13f3f8a56"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:E5ZIU4HHKBTD66U2SMDMHUZIRN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Impact of Projection and Backboning on Network Topologies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.soc-ph"],"primary_cat":"cs.SI","authors_text":"Luca Rossi, Michele Coscia","submitted_at":"2019-06-21T11:39:48Z","abstract_excerpt":"Bipartite networks are a well known strategy to study a variety of phenomena. The commonly used method to deal with this type of network is to project the bipartite data into a unipartite weighted graph and then using a backboning technique to extract only the meaningful edges. Despite the wide availability of different methods both for projection and backboning, we believe that there has been little attention to the effect that the combination of these two processes has on the data and on the resulting network topology. In this paper we study the effect that the possible combinations of proje"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.09081","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":"2026-05-17T23:42:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"buNRj86zanQ2OEC8foHQzUtObJjPkXWsJomPn6ystYRhiM7dZrn2XvxBYRHFPt04yEiOhPGRKFvPBe11JwvpCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T03:15:35.617692Z"},"content_sha256":"8896ebc1c9592ed69a05de37c089b055d6d5c93c3dac70c59fcad6e057062c5b","schema_version":"1.0","event_id":"sha256:8896ebc1c9592ed69a05de37c089b055d6d5c93c3dac70c59fcad6e057062c5b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E5ZIU4HHKBTD66U2SMDMHUZIRN/bundle.json","state_url":"https://pith.science/pith/E5ZIU4HHKBTD66U2SMDMHUZIRN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E5ZIU4HHKBTD66U2SMDMHUZIRN/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":"2026-06-08T03:15:35Z","links":{"resolver":"https://pith.science/pith/E5ZIU4HHKBTD66U2SMDMHUZIRN","bundle":"https://pith.science/pith/E5ZIU4HHKBTD66U2SMDMHUZIRN/bundle.json","state":"https://pith.science/pith/E5ZIU4HHKBTD66U2SMDMHUZIRN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E5ZIU4HHKBTD66U2SMDMHUZIRN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:E5ZIU4HHKBTD66U2SMDMHUZIRN","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":"0358c9674a0734475bb272028b96f5f079fb79c4177034d4be16cf3665be8736","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-06-21T11:39:48Z","title_canon_sha256":"4fd9eb356c3a1356d3113bd6b194299008efb990d185006e0ffabccbfbc3bf69"},"schema_version":"1.0","source":{"id":"1906.09081","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.09081","created_at":"2026-05-17T23:42:44Z"},{"alias_kind":"arxiv_version","alias_value":"1906.09081v1","created_at":"2026-05-17T23:42:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.09081","created_at":"2026-05-17T23:42:44Z"},{"alias_kind":"pith_short_12","alias_value":"E5ZIU4HHKBTD","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"E5ZIU4HHKBTD66U2","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"E5ZIU4HH","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:8896ebc1c9592ed69a05de37c089b055d6d5c93c3dac70c59fcad6e057062c5b","target":"graph","created_at":"2026-05-17T23:42:44Z","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":"Bipartite networks are a well known strategy to study a variety of phenomena. The commonly used method to deal with this type of network is to project the bipartite data into a unipartite weighted graph and then using a backboning technique to extract only the meaningful edges. Despite the wide availability of different methods both for projection and backboning, we believe that there has been little attention to the effect that the combination of these two processes has on the data and on the resulting network topology. In this paper we study the effect that the possible combinations of proje","authors_text":"Luca Rossi, Michele Coscia","cross_cats":["physics.soc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-06-21T11:39:48Z","title":"The Impact of Projection and Backboning on Network Topologies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.09081","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":"sha256:9c188fba1c827f42756be310591c2ccdd2ee74625b0a85eb619f50a13f3f8a56","target":"record","created_at":"2026-05-17T23:42:44Z","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":"0358c9674a0734475bb272028b96f5f079fb79c4177034d4be16cf3665be8736","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-06-21T11:39:48Z","title_canon_sha256":"4fd9eb356c3a1356d3113bd6b194299008efb990d185006e0ffabccbfbc3bf69"},"schema_version":"1.0","source":{"id":"1906.09081","kind":"arxiv","version":1}},"canonical_sha256":"27728a70e750663f7a9a9306c3d3288b64592b0d342763054463459a187ad4b7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"27728a70e750663f7a9a9306c3d3288b64592b0d342763054463459a187ad4b7","first_computed_at":"2026-05-17T23:42:44.628688Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:44.628688Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kVPJTmZdsvTzonHtKi0ctjDGLD8/R8D1wbHKb4qgf4O7QKGN4IWKdAVYDqpkznBAlwwAM0Ogn4t7+m1lgtscCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:44.629287Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.09081","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9c188fba1c827f42756be310591c2ccdd2ee74625b0a85eb619f50a13f3f8a56","sha256:8896ebc1c9592ed69a05de37c089b055d6d5c93c3dac70c59fcad6e057062c5b"],"state_sha256":"0c024c0a82cac5ad025fe1892759171ac3fac1de2e0551215f99d06b8deea7ee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QniYlUFtCSBqc+uHsSfkI3EnvnfSNWCeHo7M1P+4S5r91z2FCstjQymoK6Cpx3ndTlRmmtT4LDuHAD1Z1XTXDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T03:15:35.621577Z","bundle_sha256":"42d11ce53782dd8167af0462d0cd3fa5b864fa8798cd434e7958c3cb6177d255"}}