{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:EQ557KZDQ4GYI76MPNB4UZY75B","short_pith_number":"pith:EQ557KZD","canonical_record":{"source":{"id":"2507.17640","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-07-23T16:04:45Z","cross_cats_sorted":[],"title_canon_sha256":"d03e1e960e9698165b144f6a0fd086876fe780b70926eec25b699a5bea0a7eec","abstract_canon_sha256":"6eee05fd6a1cd7a499b23e1ae91bdf200b3af2aff76efdb2201262ca5f956fe3"},"schema_version":"1.0"},"canonical_sha256":"243bdfab23870d847fcc7b43ca671fe86feee96911c19eaafc8880f76f42408e","source":{"kind":"arxiv","id":"2507.17640","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.17640","created_at":"2026-05-22T01:03:44Z"},{"alias_kind":"arxiv_version","alias_value":"2507.17640v3","created_at":"2026-05-22T01:03:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.17640","created_at":"2026-05-22T01:03:44Z"},{"alias_kind":"pith_short_12","alias_value":"EQ557KZDQ4GY","created_at":"2026-05-22T01:03:44Z"},{"alias_kind":"pith_short_16","alias_value":"EQ557KZDQ4GYI76M","created_at":"2026-05-22T01:03:44Z"},{"alias_kind":"pith_short_8","alias_value":"EQ557KZD","created_at":"2026-05-22T01:03:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:EQ557KZDQ4GYI76MPNB4UZY75B","target":"record","payload":{"canonical_record":{"source":{"id":"2507.17640","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-07-23T16:04:45Z","cross_cats_sorted":[],"title_canon_sha256":"d03e1e960e9698165b144f6a0fd086876fe780b70926eec25b699a5bea0a7eec","abstract_canon_sha256":"6eee05fd6a1cd7a499b23e1ae91bdf200b3af2aff76efdb2201262ca5f956fe3"},"schema_version":"1.0"},"canonical_sha256":"243bdfab23870d847fcc7b43ca671fe86feee96911c19eaafc8880f76f42408e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-22T01:03:44.498818Z","signature_b64":"1w4IxoJR2+flc4/F50IJI3lcIFYKoRDgEm8htf1x/OkbpsBUj9y5BESEFbPoNU1cXR9JiFFhvJMhBFBOYQN5AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"243bdfab23870d847fcc7b43ca671fe86feee96911c19eaafc8880f76f42408e","last_reissued_at":"2026-05-22T01:03:44.497980Z","signature_status":"signed_v1","first_computed_at":"2026-05-22T01:03:44.497980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.17640","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":"2026-05-22T01:03:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+rrT///C6Z15fYl2HvcPV6oQXmRsU79ktGzi8SeWz1gAqVpIVrbUogfpTvEbYMPZBtLFv00Qa671dbugcEKlDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T15:42:56.531477Z"},"content_sha256":"e991c5284ed4d5cf201fb13db268e14b871b79e0b53e50e0822db85ee58e5952","schema_version":"1.0","event_id":"sha256:e991c5284ed4d5cf201fb13db268e14b871b79e0b53e50e0822db85ee58e5952"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:EQ557KZDQ4GYI76MPNB4UZY75B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Not All Starting Points Are Equal: Pre-trained Priors and Their Outsized Impact on Person Identification","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Alice J. O'Toole, Matthew Q. Hill, Thomas M. Metz","submitted_at":"2025-07-23T16:04:45Z","abstract_excerpt":"Recent years have seen an explosion of diverse general purpose pre-training methodologies for computer vision. However, the impact that these pre-training methodologies have on person identification tasks (re-id) remains under-explored. We show that under equated domain adaptation pipelines, there is dramatic variance in person identification outcomes using different starting models (architectures and pre-trained weights). We show that a range of intuitive explanations for differing downstream performance on a range of re-id tests are insufficient and propose that pre-trained weights serve as "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.17640","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/2507.17640/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":"2026-05-22T01:03:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BDbWi70gZuyDF5iagCY0fS0ii4T6Jg2fVXDSXnyX7KFPqRW3rJDXI20iatY3Tl1Z/P2wMlY/m/33/nEg+Rd6DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T15:42:56.531846Z"},"content_sha256":"9ade8a1fbbc580acd31e8373be7decfb5fac15510bcd177fb1a56f3931ca63cd","schema_version":"1.0","event_id":"sha256:9ade8a1fbbc580acd31e8373be7decfb5fac15510bcd177fb1a56f3931ca63cd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EQ557KZDQ4GYI76MPNB4UZY75B/bundle.json","state_url":"https://pith.science/pith/EQ557KZDQ4GYI76MPNB4UZY75B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EQ557KZDQ4GYI76MPNB4UZY75B/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":"2026-06-29T15:42:56Z","links":{"resolver":"https://pith.science/pith/EQ557KZDQ4GYI76MPNB4UZY75B","bundle":"https://pith.science/pith/EQ557KZDQ4GYI76MPNB4UZY75B/bundle.json","state":"https://pith.science/pith/EQ557KZDQ4GYI76MPNB4UZY75B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EQ557KZDQ4GYI76MPNB4UZY75B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:EQ557KZDQ4GYI76MPNB4UZY75B","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":"6eee05fd6a1cd7a499b23e1ae91bdf200b3af2aff76efdb2201262ca5f956fe3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-07-23T16:04:45Z","title_canon_sha256":"d03e1e960e9698165b144f6a0fd086876fe780b70926eec25b699a5bea0a7eec"},"schema_version":"1.0","source":{"id":"2507.17640","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.17640","created_at":"2026-05-22T01:03:44Z"},{"alias_kind":"arxiv_version","alias_value":"2507.17640v3","created_at":"2026-05-22T01:03:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.17640","created_at":"2026-05-22T01:03:44Z"},{"alias_kind":"pith_short_12","alias_value":"EQ557KZDQ4GY","created_at":"2026-05-22T01:03:44Z"},{"alias_kind":"pith_short_16","alias_value":"EQ557KZDQ4GYI76M","created_at":"2026-05-22T01:03:44Z"},{"alias_kind":"pith_short_8","alias_value":"EQ557KZD","created_at":"2026-05-22T01:03:44Z"}],"graph_snapshots":[{"event_id":"sha256:9ade8a1fbbc580acd31e8373be7decfb5fac15510bcd177fb1a56f3931ca63cd","target":"graph","created_at":"2026-05-22T01:03:44Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2507.17640/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent years have seen an explosion of diverse general purpose pre-training methodologies for computer vision. However, the impact that these pre-training methodologies have on person identification tasks (re-id) remains under-explored. We show that under equated domain adaptation pipelines, there is dramatic variance in person identification outcomes using different starting models (architectures and pre-trained weights). We show that a range of intuitive explanations for differing downstream performance on a range of re-id tests are insufficient and propose that pre-trained weights serve as ","authors_text":"Alice J. O'Toole, Matthew Q. Hill, Thomas M. Metz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-07-23T16:04:45Z","title":"Not All Starting Points Are Equal: Pre-trained Priors and Their Outsized Impact on Person Identification"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.17640","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:e991c5284ed4d5cf201fb13db268e14b871b79e0b53e50e0822db85ee58e5952","target":"record","created_at":"2026-05-22T01:03:44Z","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":"6eee05fd6a1cd7a499b23e1ae91bdf200b3af2aff76efdb2201262ca5f956fe3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-07-23T16:04:45Z","title_canon_sha256":"d03e1e960e9698165b144f6a0fd086876fe780b70926eec25b699a5bea0a7eec"},"schema_version":"1.0","source":{"id":"2507.17640","kind":"arxiv","version":3}},"canonical_sha256":"243bdfab23870d847fcc7b43ca671fe86feee96911c19eaafc8880f76f42408e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"243bdfab23870d847fcc7b43ca671fe86feee96911c19eaafc8880f76f42408e","first_computed_at":"2026-05-22T01:03:44.497980Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-22T01:03:44.497980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1w4IxoJR2+flc4/F50IJI3lcIFYKoRDgEm8htf1x/OkbpsBUj9y5BESEFbPoNU1cXR9JiFFhvJMhBFBOYQN5AA==","signature_status":"signed_v1","signed_at":"2026-05-22T01:03:44.498818Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.17640","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e991c5284ed4d5cf201fb13db268e14b871b79e0b53e50e0822db85ee58e5952","sha256:9ade8a1fbbc580acd31e8373be7decfb5fac15510bcd177fb1a56f3931ca63cd"],"state_sha256":"904b25f47a25e0bf07dd5625517f1a9d9661e6c1929033ccf61e9639a84fce0a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1ekvW+RhTN+BT+Hq7PG48aIaCwOOEVyBSblm6wHgTtCTfhEGmZtA8yYI+1SSe/huxlzVByDe5dESilZYOVbZAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T15:42:56.533731Z","bundle_sha256":"911d4bebac85bfeab836f5604f0045ef61b8fd5d2fbd078d8c9b3119a0b69121"}}