{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:JVJVR2D547T5BFPZ5RJZIZZBPJ","short_pith_number":"pith:JVJVR2D5","canonical_record":{"source":{"id":"2606.17491","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2026-06-16T04:03:03Z","cross_cats_sorted":["cs.LG","stat.ME"],"title_canon_sha256":"8e13bcacec9bf94e2c0bb3f0682cb454f7b18f6fcd1066a2dc19b41da829ddef","abstract_canon_sha256":"dc94642bd504554c61d423792932e4afa6736dc60e0545fdce6774e25fcaa09d"},"schema_version":"1.0"},"canonical_sha256":"4d5358e87de7e7d095f9ec539467217a52c84871d2a49499f184f11f646be8bf","source":{"kind":"arxiv","id":"2606.17491","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.17491","created_at":"2026-06-19T16:11:38Z"},{"alias_kind":"arxiv_version","alias_value":"2606.17491v2","created_at":"2026-06-19T16:11:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.17491","created_at":"2026-06-19T16:11:38Z"},{"alias_kind":"pith_short_12","alias_value":"JVJVR2D547T5","created_at":"2026-06-19T16:11:38Z"},{"alias_kind":"pith_short_16","alias_value":"JVJVR2D547T5BFPZ","created_at":"2026-06-19T16:11:38Z"},{"alias_kind":"pith_short_8","alias_value":"JVJVR2D5","created_at":"2026-06-19T16:11:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:JVJVR2D547T5BFPZ5RJZIZZBPJ","target":"record","payload":{"canonical_record":{"source":{"id":"2606.17491","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2026-06-16T04:03:03Z","cross_cats_sorted":["cs.LG","stat.ME"],"title_canon_sha256":"8e13bcacec9bf94e2c0bb3f0682cb454f7b18f6fcd1066a2dc19b41da829ddef","abstract_canon_sha256":"dc94642bd504554c61d423792932e4afa6736dc60e0545fdce6774e25fcaa09d"},"schema_version":"1.0"},"canonical_sha256":"4d5358e87de7e7d095f9ec539467217a52c84871d2a49499f184f11f646be8bf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-19T16:11:38.579862Z","signature_b64":"gERafoJALsUEud9HW08WBTb6OJsAFxOJ6VV1uDQRx1yIXarZ1+j/bJP2tVDm9ou7ZwyKyfML8Zry1w2mVB75Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4d5358e87de7e7d095f9ec539467217a52c84871d2a49499f184f11f646be8bf","last_reissued_at":"2026-06-19T16:11:38.579514Z","signature_status":"signed_v1","first_computed_at":"2026-06-19T16:11:38.579514Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.17491","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-19T16:11:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s/h0vh3QRnQ5EbdhDJqberr60OCnXhVsEDg4FDzkxP2rScPQ1Un8q68ZYXBIo4MKjLv26ijtkblDIm0830EMAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T19:00:47.463201Z"},"content_sha256":"5cd940e12ac567801b707990cda033c0127276b454ecc43f56c4d0b629d60c23","schema_version":"1.0","event_id":"sha256:5cd940e12ac567801b707990cda033c0127276b454ecc43f56c4d0b629d60c23"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:JVJVR2D547T5BFPZ5RJZIZZBPJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Bayesian Boolean Matrix Factorization with Application to Copy Number Analysis in Cancer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG","stat.ME"],"primary_cat":"stat.ML","authors_text":"Adolphus Wagala, Giovanni Parmigiani, Mehmet Samur","submitted_at":"2026-06-16T04:03:03Z","abstract_excerpt":"Binary data factorization is common, but real-valued methods ignore discreteness and yield hard-to-interpret factors. Boolean Matrix Factorization (BooMF) instead decomposes a binary matrix into two lower-rank binary matrices via logical AND and OR, expressing the data as a Boolean disjunction of interpretable patterns. In cancer genomics, BooMF can reveal coordinated feature changes that may drive tumor evolution, unlike rotational or additive decompositions. Most existing BooMF methods are heuristic, greedy, sensitive to initialization, prone to local optima, and do not support principled mo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.17491","kind":"arxiv","version":2},"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/2606.17491/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":"2026-06-19T16:11:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ruX5LgTvDf0+JEG5FGRWix86HlVX+i/bgXGWfVR8Pj/n3eSPSodTXz81w2q29s8P0QqLCfNVtMg32mWZ8B+mAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T19:00:47.463745Z"},"content_sha256":"6700ef4a6d61ee2227b4626f22ff9f553d256fc0aad0726cd2eb014a5a8db272","schema_version":"1.0","event_id":"sha256:6700ef4a6d61ee2227b4626f22ff9f553d256fc0aad0726cd2eb014a5a8db272"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JVJVR2D547T5BFPZ5RJZIZZBPJ/bundle.json","state_url":"https://pith.science/pith/JVJVR2D547T5BFPZ5RJZIZZBPJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JVJVR2D547T5BFPZ5RJZIZZBPJ/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":"2026-06-23T19:00:47Z","links":{"resolver":"https://pith.science/pith/JVJVR2D547T5BFPZ5RJZIZZBPJ","bundle":"https://pith.science/pith/JVJVR2D547T5BFPZ5RJZIZZBPJ/bundle.json","state":"https://pith.science/pith/JVJVR2D547T5BFPZ5RJZIZZBPJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JVJVR2D547T5BFPZ5RJZIZZBPJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:JVJVR2D547T5BFPZ5RJZIZZBPJ","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":"dc94642bd504554c61d423792932e4afa6736dc60e0545fdce6774e25fcaa09d","cross_cats_sorted":["cs.LG","stat.ME"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2026-06-16T04:03:03Z","title_canon_sha256":"8e13bcacec9bf94e2c0bb3f0682cb454f7b18f6fcd1066a2dc19b41da829ddef"},"schema_version":"1.0","source":{"id":"2606.17491","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.17491","created_at":"2026-06-19T16:11:38Z"},{"alias_kind":"arxiv_version","alias_value":"2606.17491v2","created_at":"2026-06-19T16:11:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.17491","created_at":"2026-06-19T16:11:38Z"},{"alias_kind":"pith_short_12","alias_value":"JVJVR2D547T5","created_at":"2026-06-19T16:11:38Z"},{"alias_kind":"pith_short_16","alias_value":"JVJVR2D547T5BFPZ","created_at":"2026-06-19T16:11:38Z"},{"alias_kind":"pith_short_8","alias_value":"JVJVR2D5","created_at":"2026-06-19T16:11:38Z"}],"graph_snapshots":[{"event_id":"sha256:6700ef4a6d61ee2227b4626f22ff9f553d256fc0aad0726cd2eb014a5a8db272","target":"graph","created_at":"2026-06-19T16:11:38Z","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/2606.17491/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Binary data factorization is common, but real-valued methods ignore discreteness and yield hard-to-interpret factors. Boolean Matrix Factorization (BooMF) instead decomposes a binary matrix into two lower-rank binary matrices via logical AND and OR, expressing the data as a Boolean disjunction of interpretable patterns. In cancer genomics, BooMF can reveal coordinated feature changes that may drive tumor evolution, unlike rotational or additive decompositions. Most existing BooMF methods are heuristic, greedy, sensitive to initialization, prone to local optima, and do not support principled mo","authors_text":"Adolphus Wagala, Giovanni Parmigiani, Mehmet Samur","cross_cats":["cs.LG","stat.ME"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2026-06-16T04:03:03Z","title":"A Bayesian Boolean Matrix Factorization with Application to Copy Number Analysis in Cancer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.17491","kind":"arxiv","version":2},"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":"sha256:5cd940e12ac567801b707990cda033c0127276b454ecc43f56c4d0b629d60c23","target":"record","created_at":"2026-06-19T16:11:38Z","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":"dc94642bd504554c61d423792932e4afa6736dc60e0545fdce6774e25fcaa09d","cross_cats_sorted":["cs.LG","stat.ME"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2026-06-16T04:03:03Z","title_canon_sha256":"8e13bcacec9bf94e2c0bb3f0682cb454f7b18f6fcd1066a2dc19b41da829ddef"},"schema_version":"1.0","source":{"id":"2606.17491","kind":"arxiv","version":2}},"canonical_sha256":"4d5358e87de7e7d095f9ec539467217a52c84871d2a49499f184f11f646be8bf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4d5358e87de7e7d095f9ec539467217a52c84871d2a49499f184f11f646be8bf","first_computed_at":"2026-06-19T16:11:38.579514Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:11:38.579514Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gERafoJALsUEud9HW08WBTb6OJsAFxOJ6VV1uDQRx1yIXarZ1+j/bJP2tVDm9ou7ZwyKyfML8Zry1w2mVB75Dg==","signature_status":"signed_v1","signed_at":"2026-06-19T16:11:38.579862Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.17491","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5cd940e12ac567801b707990cda033c0127276b454ecc43f56c4d0b629d60c23","sha256:6700ef4a6d61ee2227b4626f22ff9f553d256fc0aad0726cd2eb014a5a8db272"],"state_sha256":"ad9494394ca617d45970ab6e54597282274667adea92aef00661bdc2b649dcfd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PeuHnWUmDDjYwqsgWtnrt+rAngiKXv7wogPxDlcPdbs+hqzyLej+6yWohcavuYfu4LJeUrc8kR5oG5OoBoqBDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T19:00:47.466473Z","bundle_sha256":"25fab02cf95d943485d72227583e1ace55b1f64c3e268331d401bca6b628a4e5"}}