{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:NR2C4JLD6OFGID4ALBRYVFMCRX","short_pith_number":"pith:NR2C4JLD","canonical_record":{"source":{"id":"2605.26383","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-05-25T23:01:41Z","cross_cats_sorted":[],"title_canon_sha256":"c24b9065174baae1d6234c9a3b9a5daf2d20d9f7f9abb993a18057eb44b78cf9","abstract_canon_sha256":"688ea8b1a4c83f86984a3411ceeea18764a300f65c4db1da3ee8db04b2de9f48"},"schema_version":"1.0"},"canonical_sha256":"6c742e2563f38a640f8058638a95828df68fd459b70a4a1bf93738b39d25b1f4","source":{"kind":"arxiv","id":"2605.26383","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.26383","created_at":"2026-05-27T01:05:15Z"},{"alias_kind":"arxiv_version","alias_value":"2605.26383v1","created_at":"2026-05-27T01:05:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.26383","created_at":"2026-05-27T01:05:15Z"},{"alias_kind":"pith_short_12","alias_value":"NR2C4JLD6OFG","created_at":"2026-05-27T01:05:15Z"},{"alias_kind":"pith_short_16","alias_value":"NR2C4JLD6OFGID4A","created_at":"2026-05-27T01:05:15Z"},{"alias_kind":"pith_short_8","alias_value":"NR2C4JLD","created_at":"2026-05-27T01:05:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:NR2C4JLD6OFGID4ALBRYVFMCRX","target":"record","payload":{"canonical_record":{"source":{"id":"2605.26383","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-05-25T23:01:41Z","cross_cats_sorted":[],"title_canon_sha256":"c24b9065174baae1d6234c9a3b9a5daf2d20d9f7f9abb993a18057eb44b78cf9","abstract_canon_sha256":"688ea8b1a4c83f86984a3411ceeea18764a300f65c4db1da3ee8db04b2de9f48"},"schema_version":"1.0"},"canonical_sha256":"6c742e2563f38a640f8058638a95828df68fd459b70a4a1bf93738b39d25b1f4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-27T01:05:15.246976Z","signature_b64":"MScuOgkhGHd5ARxHzkOjnTCAE5pLKlr7U92AZIwR3EvhDkZs3D/HY1Bf2nMTtKVQlwcbONdcAfpaG0oB+ky9Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c742e2563f38a640f8058638a95828df68fd459b70a4a1bf93738b39d25b1f4","last_reissued_at":"2026-05-27T01:05:15.246246Z","signature_status":"signed_v1","first_computed_at":"2026-05-27T01:05:15.246246Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.26383","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":"2026-05-27T01:05:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8kZOqBsLhcjGE5MOig7E0bP5ZZLPqB5BxWxjHcixtUKKYj+88nVVowE5Uwb8DTbIeGAYgicro2S8UeGU9eGbBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T06:54:20.821053Z"},"content_sha256":"5a63a879deee89f2540d688e4980c11652c90512a4873ec5deed4bcca6586034","schema_version":"1.0","event_id":"sha256:5a63a879deee89f2540d688e4980c11652c90512a4873ec5deed4bcca6586034"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:NR2C4JLD6OFGID4ALBRYVFMCRX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Zero-Shot Object Re-Identification in Egocentric Kitchen Videos via Multi-Stage SAM3 Feature Fusion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Alexander Wong, Dmytro Klepachevskyi, Sirisha Rambhatla, Yuhao Chen","submitted_at":"2026-05-25T23:01:41Z","abstract_excerpt":"Object re-identification (ReID) in egocentric kitchen videos is challenging due to rapid viewpoint changes, frequent occlusions, cluttered scenes, and large intra-class appearance variations. Objects may leave and re-enter the field of view, and the large diversity of instances with limited annotations makes supervised ReID difficult to scale, motivating zero-shot approaches. We study zero-shot object ReID on the EPIC-Kitchens benchmark, where the goal is to match active food and kitchen-tool instances across frames using only pre-trained visual features. We first evaluate five state-of-the-ar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.26383","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.26383/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":"2026-05-27T01:05:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4CGlJOstjvF9sDjN/wLFfiOsTOCR2yiL/6db0jeD3sqldk4xKWoEiYapVE/q/JDpGVx9LT81dvptO0YyJXUFBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T06:54:20.821803Z"},"content_sha256":"d0e5ae53e3051fff6adba6fb1f2da7de5b87d65e10a3ef3b97f02ea6910047c3","schema_version":"1.0","event_id":"sha256:d0e5ae53e3051fff6adba6fb1f2da7de5b87d65e10a3ef3b97f02ea6910047c3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NR2C4JLD6OFGID4ALBRYVFMCRX/bundle.json","state_url":"https://pith.science/pith/NR2C4JLD6OFGID4ALBRYVFMCRX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NR2C4JLD6OFGID4ALBRYVFMCRX/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":"2026-06-11T06:54:20Z","links":{"resolver":"https://pith.science/pith/NR2C4JLD6OFGID4ALBRYVFMCRX","bundle":"https://pith.science/pith/NR2C4JLD6OFGID4ALBRYVFMCRX/bundle.json","state":"https://pith.science/pith/NR2C4JLD6OFGID4ALBRYVFMCRX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NR2C4JLD6OFGID4ALBRYVFMCRX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:NR2C4JLD6OFGID4ALBRYVFMCRX","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":"688ea8b1a4c83f86984a3411ceeea18764a300f65c4db1da3ee8db04b2de9f48","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-05-25T23:01:41Z","title_canon_sha256":"c24b9065174baae1d6234c9a3b9a5daf2d20d9f7f9abb993a18057eb44b78cf9"},"schema_version":"1.0","source":{"id":"2605.26383","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.26383","created_at":"2026-05-27T01:05:15Z"},{"alias_kind":"arxiv_version","alias_value":"2605.26383v1","created_at":"2026-05-27T01:05:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.26383","created_at":"2026-05-27T01:05:15Z"},{"alias_kind":"pith_short_12","alias_value":"NR2C4JLD6OFG","created_at":"2026-05-27T01:05:15Z"},{"alias_kind":"pith_short_16","alias_value":"NR2C4JLD6OFGID4A","created_at":"2026-05-27T01:05:15Z"},{"alias_kind":"pith_short_8","alias_value":"NR2C4JLD","created_at":"2026-05-27T01:05:15Z"}],"graph_snapshots":[{"event_id":"sha256:d0e5ae53e3051fff6adba6fb1f2da7de5b87d65e10a3ef3b97f02ea6910047c3","target":"graph","created_at":"2026-05-27T01:05:15Z","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/2605.26383/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Object re-identification (ReID) in egocentric kitchen videos is challenging due to rapid viewpoint changes, frequent occlusions, cluttered scenes, and large intra-class appearance variations. Objects may leave and re-enter the field of view, and the large diversity of instances with limited annotations makes supervised ReID difficult to scale, motivating zero-shot approaches. We study zero-shot object ReID on the EPIC-Kitchens benchmark, where the goal is to match active food and kitchen-tool instances across frames using only pre-trained visual features. We first evaluate five state-of-the-ar","authors_text":"Alexander Wong, Dmytro Klepachevskyi, Sirisha Rambhatla, Yuhao Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-05-25T23:01:41Z","title":"Zero-Shot Object Re-Identification in Egocentric Kitchen Videos via Multi-Stage SAM3 Feature Fusion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.26383","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":"sha256:5a63a879deee89f2540d688e4980c11652c90512a4873ec5deed4bcca6586034","target":"record","created_at":"2026-05-27T01:05:15Z","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":"688ea8b1a4c83f86984a3411ceeea18764a300f65c4db1da3ee8db04b2de9f48","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-05-25T23:01:41Z","title_canon_sha256":"c24b9065174baae1d6234c9a3b9a5daf2d20d9f7f9abb993a18057eb44b78cf9"},"schema_version":"1.0","source":{"id":"2605.26383","kind":"arxiv","version":1}},"canonical_sha256":"6c742e2563f38a640f8058638a95828df68fd459b70a4a1bf93738b39d25b1f4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6c742e2563f38a640f8058638a95828df68fd459b70a4a1bf93738b39d25b1f4","first_computed_at":"2026-05-27T01:05:15.246246Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-27T01:05:15.246246Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MScuOgkhGHd5ARxHzkOjnTCAE5pLKlr7U92AZIwR3EvhDkZs3D/HY1Bf2nMTtKVQlwcbONdcAfpaG0oB+ky9Ag==","signature_status":"signed_v1","signed_at":"2026-05-27T01:05:15.246976Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.26383","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a63a879deee89f2540d688e4980c11652c90512a4873ec5deed4bcca6586034","sha256:d0e5ae53e3051fff6adba6fb1f2da7de5b87d65e10a3ef3b97f02ea6910047c3"],"state_sha256":"71200c16366971b6e1aa8a11da7a7c51035b5a88b8ba455f3647b220f6e4cbdf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nj7IIFALdMNmgIM7AXExpNpczQxHDbhpONFvZ4HkEBCyz67Wo9/T9FFhucQe/vLAk7UuHV5UzP3cOAe5xzDxCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T06:54:20.825910Z","bundle_sha256":"2db97cb5d5c9fc00810ae10b069e34f2ed9bfefc326bfa6e5c7d447f74dc17e1"}}