{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:OC6AY5DTZK4WQKNQDY7HC5M72T","short_pith_number":"pith:OC6AY5DT","canonical_record":{"source":{"id":"2106.03188","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-06-06T17:39:13Z","cross_cats_sorted":[],"title_canon_sha256":"d9cb84d371ebb978c03462b2826b99eab2a69adad2a84dfe48d77a0bc956191b","abstract_canon_sha256":"139c61caca29641bfc2ea50c327bd9fcbc7d87e8311161d4e82c480d8a00e81e"},"schema_version":"1.0"},"canonical_sha256":"70bc0c7473cab96829b01e3e71759fd4fa50099020f6c8f34da4e5b5fc476e5c","source":{"kind":"arxiv","id":"2106.03188","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.03188","created_at":"2026-07-05T03:25:15Z"},{"alias_kind":"arxiv_version","alias_value":"2106.03188v3","created_at":"2026-07-05T03:25:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.03188","created_at":"2026-07-05T03:25:15Z"},{"alias_kind":"pith_short_12","alias_value":"OC6AY5DTZK4W","created_at":"2026-07-05T03:25:15Z"},{"alias_kind":"pith_short_16","alias_value":"OC6AY5DTZK4WQKNQ","created_at":"2026-07-05T03:25:15Z"},{"alias_kind":"pith_short_8","alias_value":"OC6AY5DT","created_at":"2026-07-05T03:25:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:OC6AY5DTZK4WQKNQDY7HC5M72T","target":"record","payload":{"canonical_record":{"source":{"id":"2106.03188","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-06-06T17:39:13Z","cross_cats_sorted":[],"title_canon_sha256":"d9cb84d371ebb978c03462b2826b99eab2a69adad2a84dfe48d77a0bc956191b","abstract_canon_sha256":"139c61caca29641bfc2ea50c327bd9fcbc7d87e8311161d4e82c480d8a00e81e"},"schema_version":"1.0"},"canonical_sha256":"70bc0c7473cab96829b01e3e71759fd4fa50099020f6c8f34da4e5b5fc476e5c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:25:15.000686Z","signature_b64":"8U4uxplnf3VmMnkU0sTcMLTVlW9F9L33PdGba3HfqlPbiMWepHXOcqDTkQIz70PzBCG2tqgDhZ/WlBuwo5+QCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"70bc0c7473cab96829b01e3e71759fd4fa50099020f6c8f34da4e5b5fc476e5c","last_reissued_at":"2026-07-05T03:25:15.000341Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:25:15.000341Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.03188","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:25:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sMEfNKqKC0bKEIQ6/svqgtp3f8r0jQy+NVlH9m5/uw9NWbjrGHweBAIWlaDIw02pjJ4AwPXJihHYSgU+wdanDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T15:29:24.681549Z"},"content_sha256":"3d569b122e559cc0573c938007474b937a0b65031f09c3f5895d057efd9e51f8","schema_version":"1.0","event_id":"sha256:3d569b122e559cc0573c938007474b937a0b65031f09c3f5895d057efd9e51f8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:OC6AY5DTZK4WQKNQDY7HC5M72T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Combinatorial Optimization for Panoptic Segmentation: A Fully Differentiable Approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Ahmed Abbas, Paul Swoboda","submitted_at":"2021-06-06T17:39:13Z","abstract_excerpt":"We propose a fully differentiable architecture for simultaneous semantic and instance segmentation (a.k.a. panoptic segmentation) consisting of a convolutional neural network and an asymmetric multiway cut problem solver. The latter solves a combinatorial optimization problem that elegantly incorporates semantic and boundary predictions to produce a panoptic labeling. Our formulation allows to directly maximize a smooth surrogate of the panoptic quality metric by backpropagating the gradient through the optimization problem. Experimental evaluation shows improvement by backpropagating through "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.03188","kind":"arxiv","version":3},"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/2106.03188/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":"2026-07-05T03:25:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RSezkEl2oQAtzlPrHNhyf3yld3FdgGCTyQs+uDi0iVHL4d0OSTeTPVFViDUSqvvA/JD0UepQEQ9s7b6Ea7N0Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T15:29:24.682049Z"},"content_sha256":"532773d2be0ddd670097230f798b706a9bcfe0e7b54bea4cd84719e0b4acb303","schema_version":"1.0","event_id":"sha256:532773d2be0ddd670097230f798b706a9bcfe0e7b54bea4cd84719e0b4acb303"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OC6AY5DTZK4WQKNQDY7HC5M72T/bundle.json","state_url":"https://pith.science/pith/OC6AY5DTZK4WQKNQDY7HC5M72T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OC6AY5DTZK4WQKNQDY7HC5M72T/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":"2026-08-23T15:29:24Z","links":{"resolver":"https://pith.science/pith/OC6AY5DTZK4WQKNQDY7HC5M72T","bundle":"https://pith.science/pith/OC6AY5DTZK4WQKNQDY7HC5M72T/bundle.json","state":"https://pith.science/pith/OC6AY5DTZK4WQKNQDY7HC5M72T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OC6AY5DTZK4WQKNQDY7HC5M72T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:OC6AY5DTZK4WQKNQDY7HC5M72T","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":"139c61caca29641bfc2ea50c327bd9fcbc7d87e8311161d4e82c480d8a00e81e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-06-06T17:39:13Z","title_canon_sha256":"d9cb84d371ebb978c03462b2826b99eab2a69adad2a84dfe48d77a0bc956191b"},"schema_version":"1.0","source":{"id":"2106.03188","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.03188","created_at":"2026-07-05T03:25:15Z"},{"alias_kind":"arxiv_version","alias_value":"2106.03188v3","created_at":"2026-07-05T03:25:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.03188","created_at":"2026-07-05T03:25:15Z"},{"alias_kind":"pith_short_12","alias_value":"OC6AY5DTZK4W","created_at":"2026-07-05T03:25:15Z"},{"alias_kind":"pith_short_16","alias_value":"OC6AY5DTZK4WQKNQ","created_at":"2026-07-05T03:25:15Z"},{"alias_kind":"pith_short_8","alias_value":"OC6AY5DT","created_at":"2026-07-05T03:25:15Z"}],"graph_snapshots":[{"event_id":"sha256:532773d2be0ddd670097230f798b706a9bcfe0e7b54bea4cd84719e0b4acb303","target":"graph","created_at":"2026-07-05T03:25:15Z","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/2106.03188/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose a fully differentiable architecture for simultaneous semantic and instance segmentation (a.k.a. panoptic segmentation) consisting of a convolutional neural network and an asymmetric multiway cut problem solver. The latter solves a combinatorial optimization problem that elegantly incorporates semantic and boundary predictions to produce a panoptic labeling. Our formulation allows to directly maximize a smooth surrogate of the panoptic quality metric by backpropagating the gradient through the optimization problem. Experimental evaluation shows improvement by backpropagating through ","authors_text":"Ahmed Abbas, Paul Swoboda","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-06-06T17:39:13Z","title":"Combinatorial Optimization for Panoptic Segmentation: A Fully Differentiable Approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.03188","kind":"arxiv","version":3},"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":"sha256:3d569b122e559cc0573c938007474b937a0b65031f09c3f5895d057efd9e51f8","target":"record","created_at":"2026-07-05T03:25:15Z","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":"139c61caca29641bfc2ea50c327bd9fcbc7d87e8311161d4e82c480d8a00e81e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-06-06T17:39:13Z","title_canon_sha256":"d9cb84d371ebb978c03462b2826b99eab2a69adad2a84dfe48d77a0bc956191b"},"schema_version":"1.0","source":{"id":"2106.03188","kind":"arxiv","version":3}},"canonical_sha256":"70bc0c7473cab96829b01e3e71759fd4fa50099020f6c8f34da4e5b5fc476e5c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"70bc0c7473cab96829b01e3e71759fd4fa50099020f6c8f34da4e5b5fc476e5c","first_computed_at":"2026-07-05T03:25:15.000341Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:25:15.000341Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8U4uxplnf3VmMnkU0sTcMLTVlW9F9L33PdGba3HfqlPbiMWepHXOcqDTkQIz70PzBCG2tqgDhZ/WlBuwo5+QCg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:25:15.000686Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.03188","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3d569b122e559cc0573c938007474b937a0b65031f09c3f5895d057efd9e51f8","sha256:532773d2be0ddd670097230f798b706a9bcfe0e7b54bea4cd84719e0b4acb303"],"state_sha256":"0316bb480816299550a28c583d0edc2125fd8f8321d9117e837e244338a61c73"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vACXDXIGUIJTU7wwb6MeUKnJyN/PlZvzY6vcTe1g8Xh7Wj7nELOMhRUUxSacJYX4BOcFXr26seECitmHKMmJDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T15:29:24.686930Z","bundle_sha256":"c34b7ad9ed61e485d9b94969e1e1a66f999429c43523c912e387bf580fb96c77"}}