{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:26V7CQVJVJ2RVONKWN5DCKVETK","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":"6d66b3d2a6a9488a780d86a0c78dd513d1ed5ea683018f523f26cf3c104b76b0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2013-03-12T11:23:47Z","title_canon_sha256":"db79a15a3e3045397f34363df1c491f66b0e88779ea963438fb32eb324cc58ea"},"schema_version":"1.0","source":{"id":"1303.2844","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.2844","created_at":"2026-05-18T02:30:47Z"},{"alias_kind":"arxiv_version","alias_value":"1303.2844v1","created_at":"2026-05-18T02:30:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.2844","created_at":"2026-05-18T02:30:47Z"},{"alias_kind":"pith_short_12","alias_value":"26V7CQVJVJ2R","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"26V7CQVJVJ2RVONK","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"26V7CQVJ","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:71852be24307420a99d0fbdedf7c8844b83f16a58295b687134eb73f2aaeafbc","target":"graph","created_at":"2026-05-18T02:30:47Z","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":"We consider object detection using a generic model for natural shapes. A common approach for object recognition involves matching object models directly to images. Another approach involves building intermediate representations via a generic grouping processes. We argue that these two processes (model-based recognition and grouping) may use similar computational mechanisms. By defining a generic model for shapes we can use model-based techniques to implement a mid-level vision grouping process.","authors_text":"Pedro F. Felzenszwalb","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2013-03-12T11:23:47Z","title":"A Stochastic Grammar for Natural Shapes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.2844","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":"sha256:5bd193e9daaf281b8a13ce0cddab3827d5a57c7c4cc9974045a46af20c3fb36a","target":"record","created_at":"2026-05-18T02:30:47Z","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":"6d66b3d2a6a9488a780d86a0c78dd513d1ed5ea683018f523f26cf3c104b76b0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2013-03-12T11:23:47Z","title_canon_sha256":"db79a15a3e3045397f34363df1c491f66b0e88779ea963438fb32eb324cc58ea"},"schema_version":"1.0","source":{"id":"1303.2844","kind":"arxiv","version":1}},"canonical_sha256":"d7abf142a9aa751ab9aab37a312aa49aac8853a87a0250c9fd12a5e5a76adc74","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d7abf142a9aa751ab9aab37a312aa49aac8853a87a0250c9fd12a5e5a76adc74","first_computed_at":"2026-05-18T02:30:47.801536Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:30:47.801536Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xr30PIwnY4yfcySFd50z0wE3DHeY973H911Oo0ZqBMO1ancy8eoBbzPOfv8EZsUqNORLPgTZu67xZjSOU3ICDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:30:47.801971Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.2844","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5bd193e9daaf281b8a13ce0cddab3827d5a57c7c4cc9974045a46af20c3fb36a","sha256:71852be24307420a99d0fbdedf7c8844b83f16a58295b687134eb73f2aaeafbc"],"state_sha256":"a69c2eecdff64b6acf530dad2efe56bc5fd72bcef74defee602d0f3f52a4b172"}