{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:RCEDSOMG4ILHNXIME7HBTW65JO","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":"f180fb01674c8f671387e521c9d958828dd90a5aa6d848292c79cf2cbf0bdcb9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-03-29T09:33:44Z","title_canon_sha256":"ce1f22c1b6d18835ec8b3621fb6ab295b12882a962919859b95c8ab5d116138b"},"schema_version":"1.0","source":{"id":"1603.08695","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.08695","created_at":"2026-05-18T01:10:23Z"},{"alias_kind":"arxiv_version","alias_value":"1603.08695v2","created_at":"2026-05-18T01:10:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.08695","created_at":"2026-05-18T01:10:23Z"},{"alias_kind":"pith_short_12","alias_value":"RCEDSOMG4ILH","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"RCEDSOMG4ILHNXIM","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"RCEDSOMG","created_at":"2026-05-18T12:30:41Z"}],"graph_snapshots":[{"event_id":"sha256:7c1a57ab8481e5f870d1c919a0755c8606f8bf7ab9faf7ffa314cc33c42100d5","target":"graph","created_at":"2026-05-18T01:10:23Z","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"},"paper":{"abstract_excerpt":"Object segmentation requires both object-level information and low-level pixel data. This presents a challenge for feedforward networks: lower layers in convolutional nets capture rich spatial information, while upper layers encode object-level knowledge but are invariant to factors such as pose and appearance. In this work we propose to augment feedforward nets for object segmentation with a novel top-down refinement approach. The resulting bottom-up/top-down architecture is capable of efficiently generating high-fidelity object masks. Similarly to skip connections, our approach leverages fea","authors_text":"Pedro O. Pinheiro, Piotr Doll\\`ar, Ronan Collobert, Tsung-Yi Lin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-03-29T09:33:44Z","title":"Learning to Refine Object Segments"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.08695","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:aeab55280d72cfcbe891537f140d18a44c1ffa731a14b081cea2f6daafcb8085","target":"record","created_at":"2026-05-18T01:10:23Z","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":"f180fb01674c8f671387e521c9d958828dd90a5aa6d848292c79cf2cbf0bdcb9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2016-03-29T09:33:44Z","title_canon_sha256":"ce1f22c1b6d18835ec8b3621fb6ab295b12882a962919859b95c8ab5d116138b"},"schema_version":"1.0","source":{"id":"1603.08695","kind":"arxiv","version":2}},"canonical_sha256":"8888393986e21676dd0c27ce19dbdd4ba09f4646e1b93a5c4a74bef84dc15069","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8888393986e21676dd0c27ce19dbdd4ba09f4646e1b93a5c4a74bef84dc15069","first_computed_at":"2026-05-18T01:10:23.379615Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:23.379615Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kv/BW5GdK/RoyBNbmTFaAlZVf7nkS5AthwD2RCoHlaIy4QLdMi1PWkrxrbXW9Bhc24PC2PoaaYZjejMsaJQrAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:23.380057Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.08695","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aeab55280d72cfcbe891537f140d18a44c1ffa731a14b081cea2f6daafcb8085","sha256:7c1a57ab8481e5f870d1c919a0755c8606f8bf7ab9faf7ffa314cc33c42100d5"],"state_sha256":"9646e456da25672401491c682d64f65916965013b774f259e34e2fab37b1eebc"}