{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:SB33JHL726SU2UAZMXBEVMHCM5","short_pith_number":"pith:SB33JHL7","canonical_record":{"source":{"id":"1407.0791","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2014-07-03T06:07:59Z","cross_cats_sorted":["physics.soc-ph"],"title_canon_sha256":"950e39d6b529386ff7130fe39f66880e88cf469c77b2d9951f458122b773eff6","abstract_canon_sha256":"4e20c6faf28f256f3a658c04f6db141d07c294c56de0697e068e2bb4838fa3fa"},"schema_version":"1.0"},"canonical_sha256":"9077b49d7fd7a54d501965c24ab0e2676c586e1ff0ff95467feefd20eae60cf5","source":{"kind":"arxiv","id":"1407.0791","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.0791","created_at":"2026-05-18T02:48:25Z"},{"alias_kind":"arxiv_version","alias_value":"1407.0791v1","created_at":"2026-05-18T02:48:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.0791","created_at":"2026-05-18T02:48:25Z"},{"alias_kind":"pith_short_12","alias_value":"SB33JHL726SU","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_16","alias_value":"SB33JHL726SU2UAZ","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_8","alias_value":"SB33JHL7","created_at":"2026-05-18T12:28:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:SB33JHL726SU2UAZMXBEVMHCM5","target":"record","payload":{"canonical_record":{"source":{"id":"1407.0791","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2014-07-03T06:07:59Z","cross_cats_sorted":["physics.soc-ph"],"title_canon_sha256":"950e39d6b529386ff7130fe39f66880e88cf469c77b2d9951f458122b773eff6","abstract_canon_sha256":"4e20c6faf28f256f3a658c04f6db141d07c294c56de0697e068e2bb4838fa3fa"},"schema_version":"1.0"},"canonical_sha256":"9077b49d7fd7a54d501965c24ab0e2676c586e1ff0ff95467feefd20eae60cf5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:48:25.384594Z","signature_b64":"rZVMQhN6KfcSGIO4IuQABfIDzr8f2S7Amfn7x812YQJDjFDNW/i0WtkZNdoxDSu1d1mJ89Xz6s0GgVIkoWZnAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9077b49d7fd7a54d501965c24ab0e2676c586e1ff0ff95467feefd20eae60cf5","last_reissued_at":"2026-05-18T02:48:25.384121Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:48:25.384121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.0791","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":"2026-05-18T02:48:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"05x+mLJeExnllceW7R7XotcUO0sTxMGG7gPrT5S1afXZfiCpesIPhPEQ/9phVoEc1+9RSmIpbSyJcLVi6lZlAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T00:25:02.682802Z"},"content_sha256":"93520d0cd64190ea624f30b655b3febb9b30974db1b539812af7322a10d29d8b","schema_version":"1.0","event_id":"sha256:93520d0cd64190ea624f30b655b3febb9b30974db1b539812af7322a10d29d8b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:SB33JHL726SU2UAZMXBEVMHCM5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Co-Following on Twitter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.soc-ph"],"primary_cat":"cs.SI","authors_text":"Ingmar Weber, Venkata Rama Kiran Garimella","submitted_at":"2014-07-03T06:07:59Z","abstract_excerpt":"We present an in-depth study of co-following on Twitter based on the observation that two Twitter users whose followers have similar friends are also similar, even though they might not share any direct links or a single mutual follower. We show how this observation contributes to (i) a better understanding of language-agnostic user classification on Twitter, (ii) eliciting opportunities for Computational Social Science, and (iii) improving online marketing by identifying cross-selling opportunities.\n  We start with a machine learning problem of predicting a user's preference among two alterna"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.0791","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":"2026-05-18T02:48:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xwhr8cIFuwqI9devOInE0akI0ar/KY2N/1PBCNbY3a1TnNLjYnA4YxSqE3KeS7NeaCuwbAoa9GdNDs6f0fsbCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T00:25:02.683154Z"},"content_sha256":"4e0018c4a83e18cdc158f91e7e6e39f72590fca6390da207829592af565d896a","schema_version":"1.0","event_id":"sha256:4e0018c4a83e18cdc158f91e7e6e39f72590fca6390da207829592af565d896a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SB33JHL726SU2UAZMXBEVMHCM5/bundle.json","state_url":"https://pith.science/pith/SB33JHL726SU2UAZMXBEVMHCM5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SB33JHL726SU2UAZMXBEVMHCM5/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":"2026-07-03T00:25:02Z","links":{"resolver":"https://pith.science/pith/SB33JHL726SU2UAZMXBEVMHCM5","bundle":"https://pith.science/pith/SB33JHL726SU2UAZMXBEVMHCM5/bundle.json","state":"https://pith.science/pith/SB33JHL726SU2UAZMXBEVMHCM5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SB33JHL726SU2UAZMXBEVMHCM5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:SB33JHL726SU2UAZMXBEVMHCM5","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":"4e20c6faf28f256f3a658c04f6db141d07c294c56de0697e068e2bb4838fa3fa","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2014-07-03T06:07:59Z","title_canon_sha256":"950e39d6b529386ff7130fe39f66880e88cf469c77b2d9951f458122b773eff6"},"schema_version":"1.0","source":{"id":"1407.0791","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.0791","created_at":"2026-05-18T02:48:25Z"},{"alias_kind":"arxiv_version","alias_value":"1407.0791v1","created_at":"2026-05-18T02:48:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.0791","created_at":"2026-05-18T02:48:25Z"},{"alias_kind":"pith_short_12","alias_value":"SB33JHL726SU","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_16","alias_value":"SB33JHL726SU2UAZ","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_8","alias_value":"SB33JHL7","created_at":"2026-05-18T12:28:49Z"}],"graph_snapshots":[{"event_id":"sha256:4e0018c4a83e18cdc158f91e7e6e39f72590fca6390da207829592af565d896a","target":"graph","created_at":"2026-05-18T02:48:25Z","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 present an in-depth study of co-following on Twitter based on the observation that two Twitter users whose followers have similar friends are also similar, even though they might not share any direct links or a single mutual follower. We show how this observation contributes to (i) a better understanding of language-agnostic user classification on Twitter, (ii) eliciting opportunities for Computational Social Science, and (iii) improving online marketing by identifying cross-selling opportunities.\n  We start with a machine learning problem of predicting a user's preference among two alterna","authors_text":"Ingmar Weber, Venkata Rama Kiran Garimella","cross_cats":["physics.soc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2014-07-03T06:07:59Z","title":"Co-Following on Twitter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.0791","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":"sha256:93520d0cd64190ea624f30b655b3febb9b30974db1b539812af7322a10d29d8b","target":"record","created_at":"2026-05-18T02:48:25Z","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":"4e20c6faf28f256f3a658c04f6db141d07c294c56de0697e068e2bb4838fa3fa","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2014-07-03T06:07:59Z","title_canon_sha256":"950e39d6b529386ff7130fe39f66880e88cf469c77b2d9951f458122b773eff6"},"schema_version":"1.0","source":{"id":"1407.0791","kind":"arxiv","version":1}},"canonical_sha256":"9077b49d7fd7a54d501965c24ab0e2676c586e1ff0ff95467feefd20eae60cf5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9077b49d7fd7a54d501965c24ab0e2676c586e1ff0ff95467feefd20eae60cf5","first_computed_at":"2026-05-18T02:48:25.384121Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:48:25.384121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rZVMQhN6KfcSGIO4IuQABfIDzr8f2S7Amfn7x812YQJDjFDNW/i0WtkZNdoxDSu1d1mJ89Xz6s0GgVIkoWZnAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:48:25.384594Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.0791","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:93520d0cd64190ea624f30b655b3febb9b30974db1b539812af7322a10d29d8b","sha256:4e0018c4a83e18cdc158f91e7e6e39f72590fca6390da207829592af565d896a"],"state_sha256":"53957171520785c3163ab9b41d36416d330d02e2f8de00a71321606419b597e6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5mBx/6TL52Wtjid5YE8/ybDltcq4IDPo0P+E348FO8KNJyyJ+2lp1jY02/uCrnKBnRG0i2du33aHX/oTi718AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-03T00:25:02.685089Z","bundle_sha256":"61aa47bdbd3068c70e694a98867fc9f341e77ef61ee13fecef98b023711f0d6f"}}