{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:ERCSMM3UOELS25DI4FHDY7SRDB","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":"f179c22a6024820c363f0c59ba69b4d1c4de78da6528c0f710cb4d3d680e1df4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-12-05T14:54:08Z","title_canon_sha256":"56f81abecec6c7075299c2692e54e8fca90d24ad038ea09856b2fa05cd57b464"},"schema_version":"1.0","source":{"id":"2012.03044","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.03044","created_at":"2026-07-05T01:57:25Z"},{"alias_kind":"arxiv_version","alias_value":"2012.03044v1","created_at":"2026-07-05T01:57:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.03044","created_at":"2026-07-05T01:57:25Z"},{"alias_kind":"pith_short_12","alias_value":"ERCSMM3UOELS","created_at":"2026-07-05T01:57:25Z"},{"alias_kind":"pith_short_16","alias_value":"ERCSMM3UOELS25DI","created_at":"2026-07-05T01:57:25Z"},{"alias_kind":"pith_short_8","alias_value":"ERCSMM3U","created_at":"2026-07-05T01:57:25Z"}],"graph_snapshots":[{"event_id":"sha256:abb98de39b85a7b1abb165d2de8702b1c443e9650c9e2d561f4bbd86505dcb4f","target":"graph","created_at":"2026-07-05T01:57:25Z","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/2012.03044/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We create a framework for bootstrapping visual representation learning from a primitive visual grouping capability. We operationalize grouping via a contour detector that partitions an image into regions, followed by merging of those regions into a tree hierarchy. A small supervised dataset suffices for training this grouping primitive. Across a large unlabeled dataset, we apply this learned primitive to automatically predict hierarchical region structure. These predictions serve as guidance for self-supervised contrastive feature learning: we task a deep network with producing per-pixel embed","authors_text":"Michael Maire, Xiao Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-12-05T14:54:08Z","title":"Self-Supervised Visual Representation Learning from Hierarchical Grouping"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.03044","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":"sha256:58e7697477d59aef0672d6d302118bb65ef0aa2ce0c921fd9a9210dc81bbc42b","target":"record","created_at":"2026-07-05T01:57:25Z","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":"f179c22a6024820c363f0c59ba69b4d1c4de78da6528c0f710cb4d3d680e1df4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-12-05T14:54:08Z","title_canon_sha256":"56f81abecec6c7075299c2692e54e8fca90d24ad038ea09856b2fa05cd57b464"},"schema_version":"1.0","source":{"id":"2012.03044","kind":"arxiv","version":1}},"canonical_sha256":"244526337471172d7468e14e3c7e511856f78126fe057309c5fbc3b2a041bffb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"244526337471172d7468e14e3c7e511856f78126fe057309c5fbc3b2a041bffb","first_computed_at":"2026-07-05T01:57:25.247624Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:57:25.247624Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SKSmXM2OcxgqMJmS+bPQd8eJHCgyyTGsrg/dvEdcC9exkN4vj09FEz4crIu+uRzrhVtRrjYF4m4ALFzOmnUOAg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:57:25.247986Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.03044","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58e7697477d59aef0672d6d302118bb65ef0aa2ce0c921fd9a9210dc81bbc42b","sha256:abb98de39b85a7b1abb165d2de8702b1c443e9650c9e2d561f4bbd86505dcb4f"],"state_sha256":"04f6635d405024fb71d564609bb959b51c1bd934c678d0d4eb2a419e92e258fb"}