{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:TIMBDCEJLBIKBBTZMUOCH7XB2V","short_pith_number":"pith:TIMBDCEJ","canonical_record":{"source":{"id":"2301.02642","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-01-06T18:36:04Z","cross_cats_sorted":["cs.AI","cs.LG"],"title_canon_sha256":"6327d5ef009b867f7cd28a3ea00a784da2d1b22d738f4b62877aba8ceac09d15","abstract_canon_sha256":"972d68f1925232992bea3c1ca2c6e4e5a7921945865c842b94b27ae111cf5251"},"schema_version":"1.0"},"canonical_sha256":"9a181188895850a08679651c23fee1d5638317ae773635da9b182c625eac4704","source":{"kind":"arxiv","id":"2301.02642","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.02642","created_at":"2026-07-05T05:31:08Z"},{"alias_kind":"arxiv_version","alias_value":"2301.02642v1","created_at":"2026-07-05T05:31:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.02642","created_at":"2026-07-05T05:31:08Z"},{"alias_kind":"pith_short_12","alias_value":"TIMBDCEJLBIK","created_at":"2026-07-05T05:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"TIMBDCEJLBIKBBTZ","created_at":"2026-07-05T05:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"TIMBDCEJ","created_at":"2026-07-05T05:31:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:TIMBDCEJLBIKBBTZMUOCH7XB2V","target":"record","payload":{"canonical_record":{"source":{"id":"2301.02642","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-01-06T18:36:04Z","cross_cats_sorted":["cs.AI","cs.LG"],"title_canon_sha256":"6327d5ef009b867f7cd28a3ea00a784da2d1b22d738f4b62877aba8ceac09d15","abstract_canon_sha256":"972d68f1925232992bea3c1ca2c6e4e5a7921945865c842b94b27ae111cf5251"},"schema_version":"1.0"},"canonical_sha256":"9a181188895850a08679651c23fee1d5638317ae773635da9b182c625eac4704","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:31:08.908925Z","signature_b64":"cnPt6He/zhzUopoY/+ZITYIG6mB3JCDymyX74arMMdOmYxlBlNjVdJMVdIXpmZd7fn1OtA++mAziR3JfDgb4Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9a181188895850a08679651c23fee1d5638317ae773635da9b182c625eac4704","last_reissued_at":"2026-07-05T05:31:08.908586Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:31:08.908586Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2301.02642","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":"2026-07-05T05:31:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ggtdL106lGPUAsz5Ny+6wpsJdZRfPlZx6/g6p8vG0Ezv0FDephS1t/DUMqmLW1aG8cteClraVzJR1cKAjUDrBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T14:52:39.203223Z"},"content_sha256":"d1a3caf0160c7e1a0a4dae408fd9a10cc84c8b0b0fcd8d08939431dd2d339560","schema_version":"1.0","event_id":"sha256:d1a3caf0160c7e1a0a4dae408fd9a10cc84c8b0b0fcd8d08939431dd2d339560"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:TIMBDCEJLBIKBBTZMUOCH7XB2V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Triple-stream Deep Metric Learning of Great Ape Behavioural Actions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI","cs.LG"],"primary_cat":"cs.CV","authors_text":"Hjalmar K\\\"uhl, Majid Mirmehdi, Otto Brookes, Tilo Burghardt","submitted_at":"2023-01-06T18:36:04Z","abstract_excerpt":"We propose the first metric learning system for the recognition of great ape behavioural actions. Our proposed triple stream embedding architecture works on camera trap videos taken directly in the wild and demonstrates that the utilisation of an explicit DensePose-C chimpanzee body part segmentation stream effectively complements traditional RGB appearance and optical flow streams. We evaluate system variants with different feature fusion techniques and long-tail recognition approaches. Results and ablations show performance improvements of ~12% in top-1 accuracy over previous results achieve"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.02642","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/2301.02642/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":"2026-07-05T05:31:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2mmey0NCfkQF2Xvef59oocvP9f4QnR0/TR3eiJNpHWqzC51PVicPA1jpT9dTcZi2eKZLg24/7gi/DhaZr6wPDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T14:52:39.204156Z"},"content_sha256":"ec0fd645eccc0a5dbbcfc0c7e39f3e69ba7b2dab79cce07b08dbe08e32125f70","schema_version":"1.0","event_id":"sha256:ec0fd645eccc0a5dbbcfc0c7e39f3e69ba7b2dab79cce07b08dbe08e32125f70"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TIMBDCEJLBIKBBTZMUOCH7XB2V/bundle.json","state_url":"https://pith.science/pith/TIMBDCEJLBIKBBTZMUOCH7XB2V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TIMBDCEJLBIKBBTZMUOCH7XB2V/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":"2026-08-04T14:52:39Z","links":{"resolver":"https://pith.science/pith/TIMBDCEJLBIKBBTZMUOCH7XB2V","bundle":"https://pith.science/pith/TIMBDCEJLBIKBBTZMUOCH7XB2V/bundle.json","state":"https://pith.science/pith/TIMBDCEJLBIKBBTZMUOCH7XB2V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TIMBDCEJLBIKBBTZMUOCH7XB2V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:TIMBDCEJLBIKBBTZMUOCH7XB2V","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":"972d68f1925232992bea3c1ca2c6e4e5a7921945865c842b94b27ae111cf5251","cross_cats_sorted":["cs.AI","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-01-06T18:36:04Z","title_canon_sha256":"6327d5ef009b867f7cd28a3ea00a784da2d1b22d738f4b62877aba8ceac09d15"},"schema_version":"1.0","source":{"id":"2301.02642","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.02642","created_at":"2026-07-05T05:31:08Z"},{"alias_kind":"arxiv_version","alias_value":"2301.02642v1","created_at":"2026-07-05T05:31:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.02642","created_at":"2026-07-05T05:31:08Z"},{"alias_kind":"pith_short_12","alias_value":"TIMBDCEJLBIK","created_at":"2026-07-05T05:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"TIMBDCEJLBIKBBTZ","created_at":"2026-07-05T05:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"TIMBDCEJ","created_at":"2026-07-05T05:31:08Z"}],"graph_snapshots":[{"event_id":"sha256:ec0fd645eccc0a5dbbcfc0c7e39f3e69ba7b2dab79cce07b08dbe08e32125f70","target":"graph","created_at":"2026-07-05T05:31:08Z","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/2301.02642/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose the first metric learning system for the recognition of great ape behavioural actions. Our proposed triple stream embedding architecture works on camera trap videos taken directly in the wild and demonstrates that the utilisation of an explicit DensePose-C chimpanzee body part segmentation stream effectively complements traditional RGB appearance and optical flow streams. We evaluate system variants with different feature fusion techniques and long-tail recognition approaches. Results and ablations show performance improvements of ~12% in top-1 accuracy over previous results achieve","authors_text":"Hjalmar K\\\"uhl, Majid Mirmehdi, Otto Brookes, Tilo Burghardt","cross_cats":["cs.AI","cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-01-06T18:36:04Z","title":"Triple-stream Deep Metric Learning of Great Ape Behavioural Actions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.02642","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:d1a3caf0160c7e1a0a4dae408fd9a10cc84c8b0b0fcd8d08939431dd2d339560","target":"record","created_at":"2026-07-05T05:31:08Z","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":"972d68f1925232992bea3c1ca2c6e4e5a7921945865c842b94b27ae111cf5251","cross_cats_sorted":["cs.AI","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-01-06T18:36:04Z","title_canon_sha256":"6327d5ef009b867f7cd28a3ea00a784da2d1b22d738f4b62877aba8ceac09d15"},"schema_version":"1.0","source":{"id":"2301.02642","kind":"arxiv","version":1}},"canonical_sha256":"9a181188895850a08679651c23fee1d5638317ae773635da9b182c625eac4704","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9a181188895850a08679651c23fee1d5638317ae773635da9b182c625eac4704","first_computed_at":"2026-07-05T05:31:08.908586Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:31:08.908586Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cnPt6He/zhzUopoY/+ZITYIG6mB3JCDymyX74arMMdOmYxlBlNjVdJMVdIXpmZd7fn1OtA++mAziR3JfDgb4Bg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:31:08.908925Z","signed_message":"canonical_sha256_bytes"},"source_id":"2301.02642","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d1a3caf0160c7e1a0a4dae408fd9a10cc84c8b0b0fcd8d08939431dd2d339560","sha256:ec0fd645eccc0a5dbbcfc0c7e39f3e69ba7b2dab79cce07b08dbe08e32125f70"],"state_sha256":"4b2fe543a9c4bb5b194fe942dbc6a1e031c787476e454d347021a75d45228e07"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VnUr1LnvBJivb02YDfnbgC3ZM48qiIbP7UKOFXsapRwOpRQj0fTuOKLddP1+J4Dc3mRHN5lwBTcksd3YsOvkDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T14:52:39.213833Z","bundle_sha256":"b04c6edbd04c73ac6092cccde1d1a8ebf598ce2224f3befd212cf24cdd955d0a"}}