{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:EJA5QAEFOWIXESCBHGSUTZSW5D","short_pith_number":"pith:EJA5QAEF","canonical_record":{"source":{"id":"2003.07990","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-03-18T00:07:21Z","cross_cats_sorted":[],"title_canon_sha256":"4c67b24b3abd4e183e7cfee69247820846677e8d6208f88e27fa1aee456a6c93","abstract_canon_sha256":"e289b2e22f30b054a8fd5c33c2dfbe5ef548782c46c0907dcf3ef46ed6775c00"},"schema_version":"1.0"},"canonical_sha256":"2241d80085759172484139a549e656e8d1044dcd52134ea2fd49d4958d42313e","source":{"kind":"arxiv","id":"2003.07990","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.07990","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"arxiv_version","alias_value":"2003.07990v2","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.07990","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"pith_short_12","alias_value":"EJA5QAEFOWIX","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"pith_short_16","alias_value":"EJA5QAEFOWIXESCB","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"pith_short_8","alias_value":"EJA5QAEF","created_at":"2026-07-05T01:01:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:EJA5QAEFOWIXESCBHGSUTZSW5D","target":"record","payload":{"canonical_record":{"source":{"id":"2003.07990","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-03-18T00:07:21Z","cross_cats_sorted":[],"title_canon_sha256":"4c67b24b3abd4e183e7cfee69247820846677e8d6208f88e27fa1aee456a6c93","abstract_canon_sha256":"e289b2e22f30b054a8fd5c33c2dfbe5ef548782c46c0907dcf3ef46ed6775c00"},"schema_version":"1.0"},"canonical_sha256":"2241d80085759172484139a549e656e8d1044dcd52134ea2fd49d4958d42313e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:01:16.449769Z","signature_b64":"gClMmJVH5Y3kISvHnlB+k6PfC20bdGVbzkj0wwYlITri1JsGXK9+3IA69SavDlOWoxAfY/cRWydYUc7RVHA+DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2241d80085759172484139a549e656e8d1044dcd52134ea2fd49d4958d42313e","last_reissued_at":"2026-07-05T01:01:16.449281Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:01:16.449281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.07990","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":"2026-07-05T01:01:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WBdZsW/z1UZJKGJy+Cse33dXQJ9szLeGKtTxhvEANxvXaKthkyiKEL3NoIVztxP9VKM+ZM4pc5wHtGigmcHCAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:22:56.081692Z"},"content_sha256":"3887f033be5d0d1ad0e3ea59a53b5b157e9e1215fb5edbdd02d4e16ffa65204e","schema_version":"1.0","event_id":"sha256:3887f033be5d0d1ad0e3ea59a53b5b157e9e1215fb5edbdd02d4e16ffa65204e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:EJA5QAEFOWIXESCBHGSUTZSW5D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Watching the World Go By: Representation Learning from Unlabeled Videos","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Ali Farhadi, Daniel Gordon, Dieter Fox, Kiana Ehsani","submitted_at":"2020-03-18T00:07:21Z","abstract_excerpt":"Recent single image unsupervised representation learning techniques show remarkable success on a variety of tasks. The basic principle in these works is instance discrimination: learning to differentiate between two augmented versions of the same image and a large batch of unrelated images. Networks learn to ignore the augmentation noise and extract semantically meaningful representations. Prior work uses artificial data augmentation techniques such as cropping, and color jitter which can only affect the image in superficial ways and are not aligned with how objects actually change e.g. occlus"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.07990","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/2003.07990/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":"2026-07-05T01:01:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"79D5Y8t18h2TUMajqjUVZSg3OLcSiwfNXVio7j+YNxnC8oLyNaTR7jz2rsbGy0/GkcEnmvkzWSImm/wrTlnxBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:22:56.082206Z"},"content_sha256":"7bc127411ce4a5526627c4122153e8c3699427608e12a882f6151891fcce6612","schema_version":"1.0","event_id":"sha256:7bc127411ce4a5526627c4122153e8c3699427608e12a882f6151891fcce6612"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EJA5QAEFOWIXESCBHGSUTZSW5D/bundle.json","state_url":"https://pith.science/pith/EJA5QAEFOWIXESCBHGSUTZSW5D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EJA5QAEFOWIXESCBHGSUTZSW5D/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":"2026-08-07T16:22:56Z","links":{"resolver":"https://pith.science/pith/EJA5QAEFOWIXESCBHGSUTZSW5D","bundle":"https://pith.science/pith/EJA5QAEFOWIXESCBHGSUTZSW5D/bundle.json","state":"https://pith.science/pith/EJA5QAEFOWIXESCBHGSUTZSW5D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EJA5QAEFOWIXESCBHGSUTZSW5D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:EJA5QAEFOWIXESCBHGSUTZSW5D","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":"e289b2e22f30b054a8fd5c33c2dfbe5ef548782c46c0907dcf3ef46ed6775c00","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-03-18T00:07:21Z","title_canon_sha256":"4c67b24b3abd4e183e7cfee69247820846677e8d6208f88e27fa1aee456a6c93"},"schema_version":"1.0","source":{"id":"2003.07990","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.07990","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"arxiv_version","alias_value":"2003.07990v2","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.07990","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"pith_short_12","alias_value":"EJA5QAEFOWIX","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"pith_short_16","alias_value":"EJA5QAEFOWIXESCB","created_at":"2026-07-05T01:01:16Z"},{"alias_kind":"pith_short_8","alias_value":"EJA5QAEF","created_at":"2026-07-05T01:01:16Z"}],"graph_snapshots":[{"event_id":"sha256:7bc127411ce4a5526627c4122153e8c3699427608e12a882f6151891fcce6612","target":"graph","created_at":"2026-07-05T01:01:16Z","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/2003.07990/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent single image unsupervised representation learning techniques show remarkable success on a variety of tasks. The basic principle in these works is instance discrimination: learning to differentiate between two augmented versions of the same image and a large batch of unrelated images. Networks learn to ignore the augmentation noise and extract semantically meaningful representations. Prior work uses artificial data augmentation techniques such as cropping, and color jitter which can only affect the image in superficial ways and are not aligned with how objects actually change e.g. occlus","authors_text":"Ali Farhadi, Daniel Gordon, Dieter Fox, Kiana Ehsani","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-03-18T00:07:21Z","title":"Watching the World Go By: Representation Learning from Unlabeled Videos"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.07990","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":"sha256:3887f033be5d0d1ad0e3ea59a53b5b157e9e1215fb5edbdd02d4e16ffa65204e","target":"record","created_at":"2026-07-05T01:01:16Z","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":"e289b2e22f30b054a8fd5c33c2dfbe5ef548782c46c0907dcf3ef46ed6775c00","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-03-18T00:07:21Z","title_canon_sha256":"4c67b24b3abd4e183e7cfee69247820846677e8d6208f88e27fa1aee456a6c93"},"schema_version":"1.0","source":{"id":"2003.07990","kind":"arxiv","version":2}},"canonical_sha256":"2241d80085759172484139a549e656e8d1044dcd52134ea2fd49d4958d42313e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2241d80085759172484139a549e656e8d1044dcd52134ea2fd49d4958d42313e","first_computed_at":"2026-07-05T01:01:16.449281Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:01:16.449281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gClMmJVH5Y3kISvHnlB+k6PfC20bdGVbzkj0wwYlITri1JsGXK9+3IA69SavDlOWoxAfY/cRWydYUc7RVHA+DA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:01:16.449769Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.07990","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3887f033be5d0d1ad0e3ea59a53b5b157e9e1215fb5edbdd02d4e16ffa65204e","sha256:7bc127411ce4a5526627c4122153e8c3699427608e12a882f6151891fcce6612"],"state_sha256":"7a6cc77a4c0fabc1d639d30465885c9bf0c75b432f996c1006e565349bd0d4cf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7Ys0DhF7CAClwmwEjdyudBjGO/5PvUKe1H4qaFZtddZgeZ0ShdD/nsDbgXRSEAGRQx6OCD8smcA3SLMG40ewCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T16:22:56.086456Z","bundle_sha256":"f448d7fb27a4603ba9a81e7d79baa9791fee8420979a079a0b931998f3583e4e"}}