{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:IQZCPHTIJ5YQKWD7MXAPJ2VQOM","short_pith_number":"pith:IQZCPHTI","canonical_record":{"source":{"id":"1311.1924","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2013-11-08T10:29:22Z","cross_cats_sorted":["physics.soc-ph","q-fin.PM","q-fin.RM","q-fin.ST"],"title_canon_sha256":"186d23a23c018f542dcbee224e1709934af4130b4b9794926f794c0be6ce4f93","abstract_canon_sha256":"716c798cc7683490c9cf5778b9189dca0248c4438da1b3f6aef31dd3a835b7c5"},"schema_version":"1.0"},"canonical_sha256":"4432279e684f7105587f65c0f4eab07328e8cf0218e352b490b875ace681a147","source":{"kind":"arxiv","id":"1311.1924","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.1924","created_at":"2026-05-18T02:18:23Z"},{"alias_kind":"arxiv_version","alias_value":"1311.1924v3","created_at":"2026-05-18T02:18:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.1924","created_at":"2026-05-18T02:18:23Z"},{"alias_kind":"pith_short_12","alias_value":"IQZCPHTIJ5YQ","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"IQZCPHTIJ5YQKWD7","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"IQZCPHTI","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:IQZCPHTIJ5YQKWD7MXAPJ2VQOM","target":"record","payload":{"canonical_record":{"source":{"id":"1311.1924","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2013-11-08T10:29:22Z","cross_cats_sorted":["physics.soc-ph","q-fin.PM","q-fin.RM","q-fin.ST"],"title_canon_sha256":"186d23a23c018f542dcbee224e1709934af4130b4b9794926f794c0be6ce4f93","abstract_canon_sha256":"716c798cc7683490c9cf5778b9189dca0248c4438da1b3f6aef31dd3a835b7c5"},"schema_version":"1.0"},"canonical_sha256":"4432279e684f7105587f65c0f4eab07328e8cf0218e352b490b875ace681a147","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:18:23.941650Z","signature_b64":"QIIvYWORMxTe7w+uhDCAuw8y9GSCvIrB1fONoQQQh356+fwil4w5x9obLFyfNp4O0TyMf1tUn+0K1Yb80WR4DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4432279e684f7105587f65c0f4eab07328e8cf0218e352b490b875ace681a147","last_reissued_at":"2026-05-18T02:18:23.941036Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:18:23.941036Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.1924","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":"2026-05-18T02:18:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P+VuOBbJdUaQQT1rf2e/5rbgN3ZbBjk65agQAR81BpEiu3HxqCRS/bL5Okr17h+EVd8h2BuAhzDFJkK2YBnjBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T18:16:56.495482Z"},"content_sha256":"a16613ffa2938345dee1ed1555d5662ccf6eb16ed7e04393067b929f8b5f8e6a","schema_version":"1.0","event_id":"sha256:a16613ffa2938345dee1ed1555d5662ccf6eb16ed7e04393067b929f8b5f8e6a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:IQZCPHTIJ5YQKWD7MXAPJ2VQOM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Community detection for correlation matrices","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.soc-ph","q-fin.PM","q-fin.RM","q-fin.ST"],"primary_cat":"physics.data-an","authors_text":"Diego Garlaschelli, Mel MacMahon","submitted_at":"2013-11-08T10:29:22Z","abstract_excerpt":"A challenging problem in the study of complex systems is that of resolving, without prior information, the emergent, mesoscopic organization determined by groups of units whose dynamical activity is more strongly correlated internally than with the rest of the system. The existing techniques to filter correlations are not explicitly oriented towards identifying such modules and can suffer from an unavoidable information loss. A promising alternative is that of employing community detection techniques developed in network theory. Unfortunately, this approach has focused predominantly on replaci"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.1924","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":""},"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":"2026-05-18T02:18:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mT7+20AkXRy3I3cHPnysMZ4KBcg7nNhGzBPJ6knak2szfQFm0BiH50hxdkSJ6wR3QI5BrDUizq3ooocjZO6ODw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T18:16:56.495846Z"},"content_sha256":"8044c48c72ff0afba9070106031144dafe03ce350d3aabc028849771218c9ee0","schema_version":"1.0","event_id":"sha256:8044c48c72ff0afba9070106031144dafe03ce350d3aabc028849771218c9ee0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IQZCPHTIJ5YQKWD7MXAPJ2VQOM/bundle.json","state_url":"https://pith.science/pith/IQZCPHTIJ5YQKWD7MXAPJ2VQOM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IQZCPHTIJ5YQKWD7MXAPJ2VQOM/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":"2026-05-22T18:16:56Z","links":{"resolver":"https://pith.science/pith/IQZCPHTIJ5YQKWD7MXAPJ2VQOM","bundle":"https://pith.science/pith/IQZCPHTIJ5YQKWD7MXAPJ2VQOM/bundle.json","state":"https://pith.science/pith/IQZCPHTIJ5YQKWD7MXAPJ2VQOM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IQZCPHTIJ5YQKWD7MXAPJ2VQOM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:IQZCPHTIJ5YQKWD7MXAPJ2VQOM","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":"716c798cc7683490c9cf5778b9189dca0248c4438da1b3f6aef31dd3a835b7c5","cross_cats_sorted":["physics.soc-ph","q-fin.PM","q-fin.RM","q-fin.ST"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2013-11-08T10:29:22Z","title_canon_sha256":"186d23a23c018f542dcbee224e1709934af4130b4b9794926f794c0be6ce4f93"},"schema_version":"1.0","source":{"id":"1311.1924","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.1924","created_at":"2026-05-18T02:18:23Z"},{"alias_kind":"arxiv_version","alias_value":"1311.1924v3","created_at":"2026-05-18T02:18:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.1924","created_at":"2026-05-18T02:18:23Z"},{"alias_kind":"pith_short_12","alias_value":"IQZCPHTIJ5YQ","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"IQZCPHTIJ5YQKWD7","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"IQZCPHTI","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:8044c48c72ff0afba9070106031144dafe03ce350d3aabc028849771218c9ee0","target":"graph","created_at":"2026-05-18T02:18:23Z","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":"A challenging problem in the study of complex systems is that of resolving, without prior information, the emergent, mesoscopic organization determined by groups of units whose dynamical activity is more strongly correlated internally than with the rest of the system. The existing techniques to filter correlations are not explicitly oriented towards identifying such modules and can suffer from an unavoidable information loss. A promising alternative is that of employing community detection techniques developed in network theory. Unfortunately, this approach has focused predominantly on replaci","authors_text":"Diego Garlaschelli, Mel MacMahon","cross_cats":["physics.soc-ph","q-fin.PM","q-fin.RM","q-fin.ST"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2013-11-08T10:29:22Z","title":"Community detection for correlation matrices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.1924","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:a16613ffa2938345dee1ed1555d5662ccf6eb16ed7e04393067b929f8b5f8e6a","target":"record","created_at":"2026-05-18T02:18:23Z","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":"716c798cc7683490c9cf5778b9189dca0248c4438da1b3f6aef31dd3a835b7c5","cross_cats_sorted":["physics.soc-ph","q-fin.PM","q-fin.RM","q-fin.ST"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.data-an","submitted_at":"2013-11-08T10:29:22Z","title_canon_sha256":"186d23a23c018f542dcbee224e1709934af4130b4b9794926f794c0be6ce4f93"},"schema_version":"1.0","source":{"id":"1311.1924","kind":"arxiv","version":3}},"canonical_sha256":"4432279e684f7105587f65c0f4eab07328e8cf0218e352b490b875ace681a147","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4432279e684f7105587f65c0f4eab07328e8cf0218e352b490b875ace681a147","first_computed_at":"2026-05-18T02:18:23.941036Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:18:23.941036Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QIIvYWORMxTe7w+uhDCAuw8y9GSCvIrB1fONoQQQh356+fwil4w5x9obLFyfNp4O0TyMf1tUn+0K1Yb80WR4DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:18:23.941650Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.1924","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a16613ffa2938345dee1ed1555d5662ccf6eb16ed7e04393067b929f8b5f8e6a","sha256:8044c48c72ff0afba9070106031144dafe03ce350d3aabc028849771218c9ee0"],"state_sha256":"3feb5fb1b09eb61e7c208fcf8c68e9b98608b36a98fa551c8173ce151798b9d6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lUnX9hjoLMREBeu5LMjk5MBOt4LL5Y+F0/h6G5AOD5jQ6xegXeYuGMq65tTdyK84DNJ91a1Rqulc9F35USCvCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T18:16:56.498013Z","bundle_sha256":"baf16927b6ab1c3b87f2bc1ace18395c2b618bfda3b0bd26a5b6dceb72bdeacc"}}