{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:CZGH2J3SD7OLVHBH7EXV3URTEY","short_pith_number":"pith:CZGH2J3S","canonical_record":{"source":{"id":"2312.07762","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2023-12-12T22:10:38Z","cross_cats_sorted":["cs.NA","math.NA","stat.AP"],"title_canon_sha256":"14670089c7f11647d70c181f4f20db5c984970e2eca455bd93d33c491a01d449","abstract_canon_sha256":"6ffbc03d48ba98ae931578c769f51ec774f9407b0cc671fffe111e0399dad7cd"},"schema_version":"1.0"},"canonical_sha256":"164c7d27721fdcba9c27f92f5dd233263d71337a1191f82033231a0a9c8bfc4d","source":{"kind":"arxiv","id":"2312.07762","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2312.07762","created_at":"2026-06-08T01:04:58Z"},{"alias_kind":"arxiv_version","alias_value":"2312.07762v3","created_at":"2026-06-08T01:04:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.07762","created_at":"2026-06-08T01:04:58Z"},{"alias_kind":"pith_short_12","alias_value":"CZGH2J3SD7OL","created_at":"2026-06-08T01:04:58Z"},{"alias_kind":"pith_short_16","alias_value":"CZGH2J3SD7OLVHBH","created_at":"2026-06-08T01:04:58Z"},{"alias_kind":"pith_short_8","alias_value":"CZGH2J3S","created_at":"2026-06-08T01:04:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:CZGH2J3SD7OLVHBH7EXV3URTEY","target":"record","payload":{"canonical_record":{"source":{"id":"2312.07762","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2023-12-12T22:10:38Z","cross_cats_sorted":["cs.NA","math.NA","stat.AP"],"title_canon_sha256":"14670089c7f11647d70c181f4f20db5c984970e2eca455bd93d33c491a01d449","abstract_canon_sha256":"6ffbc03d48ba98ae931578c769f51ec774f9407b0cc671fffe111e0399dad7cd"},"schema_version":"1.0"},"canonical_sha256":"164c7d27721fdcba9c27f92f5dd233263d71337a1191f82033231a0a9c8bfc4d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-08T01:04:58.903476Z","signature_b64":"/0oNwJo9iCKcuCKzL2nBbqk0LRgug7lkn04jQrcN+fCxBhWkgGt91Qy6qJlF+/14WqtwC1ThIlVn+7/oFSdBAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"164c7d27721fdcba9c27f92f5dd233263d71337a1191f82033231a0a9c8bfc4d","last_reissued_at":"2026-06-08T01:04:58.902685Z","signature_status":"signed_v1","first_computed_at":"2026-06-08T01:04:58.902685Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2312.07762","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":"2026-06-08T01:04:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8MRXGx9eed5JpEx2wKzGjjDqX2h43M8m0zh35zoY4UdTPex7IlmchangsGZpBCdhYCgpWKUdCjhwDGGgvBvqCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T00:38:57.910473Z"},"content_sha256":"0d7d1903937259fc951700d275bb069f46db729aeee5aac4b94e1a64dfcf69a9","schema_version":"1.0","event_id":"sha256:0d7d1903937259fc951700d275bb069f46db729aeee5aac4b94e1a64dfcf69a9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:CZGH2J3SD7OLVHBH7EXV3URTEY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interpretable factorization of clinical questionnaires to identify latent factors of psychopathology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NA","math.NA","stat.AP"],"primary_cat":"cs.LG","authors_text":"Armin Raznahan, Bridget W Mahony, Francisco Pereira, Ka Chun Lam","submitted_at":"2023-12-12T22:10:38Z","abstract_excerpt":"Psychiatry research seeks to understand the manifestations of psychopathology in behavior, as measured in questionnaire data, by identifying a small number of latent factors that explain them. While factor analysis is the traditional tool for this purpose, the resulting factors may not be interpretable, and may also be subject to confounding variables. Moreover, missing data are common, and explicit imputation is often required. To overcome these limitations, we introduce interpretability constrained questionnaire factorization (ICQF), a non-negative matrix factorization method with regulariza"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.07762","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2312.07762/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-06-08T01:04:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nrZ2Aa3p1+a36NJvi7zripTCQuUlZDzIoPlatinI6j0WJXD6BQDNyXHqx1FymW0sps7xXhqFg1A8wvQ+OjCoCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T00:38:57.911243Z"},"content_sha256":"66ba350ccf9d484611e9e0b946a6925c83e86b6603042875604c7737c7416085","schema_version":"1.0","event_id":"sha256:66ba350ccf9d484611e9e0b946a6925c83e86b6603042875604c7737c7416085"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CZGH2J3SD7OLVHBH7EXV3URTEY/bundle.json","state_url":"https://pith.science/pith/CZGH2J3SD7OLVHBH7EXV3URTEY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CZGH2J3SD7OLVHBH7EXV3URTEY/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":"2026-06-12T00:38:57Z","links":{"resolver":"https://pith.science/pith/CZGH2J3SD7OLVHBH7EXV3URTEY","bundle":"https://pith.science/pith/CZGH2J3SD7OLVHBH7EXV3URTEY/bundle.json","state":"https://pith.science/pith/CZGH2J3SD7OLVHBH7EXV3URTEY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CZGH2J3SD7OLVHBH7EXV3URTEY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:CZGH2J3SD7OLVHBH7EXV3URTEY","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":"6ffbc03d48ba98ae931578c769f51ec774f9407b0cc671fffe111e0399dad7cd","cross_cats_sorted":["cs.NA","math.NA","stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2023-12-12T22:10:38Z","title_canon_sha256":"14670089c7f11647d70c181f4f20db5c984970e2eca455bd93d33c491a01d449"},"schema_version":"1.0","source":{"id":"2312.07762","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2312.07762","created_at":"2026-06-08T01:04:58Z"},{"alias_kind":"arxiv_version","alias_value":"2312.07762v3","created_at":"2026-06-08T01:04:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.07762","created_at":"2026-06-08T01:04:58Z"},{"alias_kind":"pith_short_12","alias_value":"CZGH2J3SD7OL","created_at":"2026-06-08T01:04:58Z"},{"alias_kind":"pith_short_16","alias_value":"CZGH2J3SD7OLVHBH","created_at":"2026-06-08T01:04:58Z"},{"alias_kind":"pith_short_8","alias_value":"CZGH2J3S","created_at":"2026-06-08T01:04:58Z"}],"graph_snapshots":[{"event_id":"sha256:66ba350ccf9d484611e9e0b946a6925c83e86b6603042875604c7737c7416085","target":"graph","created_at":"2026-06-08T01:04:58Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2312.07762/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Psychiatry research seeks to understand the manifestations of psychopathology in behavior, as measured in questionnaire data, by identifying a small number of latent factors that explain them. While factor analysis is the traditional tool for this purpose, the resulting factors may not be interpretable, and may also be subject to confounding variables. Moreover, missing data are common, and explicit imputation is often required. To overcome these limitations, we introduce interpretability constrained questionnaire factorization (ICQF), a non-negative matrix factorization method with regulariza","authors_text":"Armin Raznahan, Bridget W Mahony, Francisco Pereira, Ka Chun Lam","cross_cats":["cs.NA","math.NA","stat.AP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2023-12-12T22:10:38Z","title":"Interpretable factorization of clinical questionnaires to identify latent factors of psychopathology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.07762","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":"sha256:0d7d1903937259fc951700d275bb069f46db729aeee5aac4b94e1a64dfcf69a9","target":"record","created_at":"2026-06-08T01:04:58Z","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":"6ffbc03d48ba98ae931578c769f51ec774f9407b0cc671fffe111e0399dad7cd","cross_cats_sorted":["cs.NA","math.NA","stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2023-12-12T22:10:38Z","title_canon_sha256":"14670089c7f11647d70c181f4f20db5c984970e2eca455bd93d33c491a01d449"},"schema_version":"1.0","source":{"id":"2312.07762","kind":"arxiv","version":3}},"canonical_sha256":"164c7d27721fdcba9c27f92f5dd233263d71337a1191f82033231a0a9c8bfc4d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"164c7d27721fdcba9c27f92f5dd233263d71337a1191f82033231a0a9c8bfc4d","first_computed_at":"2026-06-08T01:04:58.902685Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-08T01:04:58.902685Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/0oNwJo9iCKcuCKzL2nBbqk0LRgug7lkn04jQrcN+fCxBhWkgGt91Qy6qJlF+/14WqtwC1ThIlVn+7/oFSdBAA==","signature_status":"signed_v1","signed_at":"2026-06-08T01:04:58.903476Z","signed_message":"canonical_sha256_bytes"},"source_id":"2312.07762","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0d7d1903937259fc951700d275bb069f46db729aeee5aac4b94e1a64dfcf69a9","sha256:66ba350ccf9d484611e9e0b946a6925c83e86b6603042875604c7737c7416085"],"state_sha256":"d8be3f1161dca803c8fedd8f190e26330d08ba221108d465318a01bfc1d19fd4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Eu+3cTf6Ewsph7hYmtlykiF8SJSbPIttfKl6zsMBP2IveFIAueYIUo1JrS77VPOVSdDK3hlqQKdfz4ZYd9ovAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T00:38:57.915548Z","bundle_sha256":"e686f68190649428f9c5027587160a6878e287df344e6ce6f9f165677ed16254"}}