{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:OQTKLTKFGNCMSFTGO7E7WJLGA6","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":"c1afea08b1d7c2c4549959e63dfabfc121634bf513d69aeffec904da6765eab3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-06-22T22:33:44Z","title_canon_sha256":"fdbb9c7326111be3f164888ee59dad7cc8075dba5050c2770e27d2195de6c708"},"schema_version":"1.0","source":{"id":"1906.09513","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.09513","created_at":"2026-05-17T23:42:37Z"},{"alias_kind":"arxiv_version","alias_value":"1906.09513v1","created_at":"2026-05-17T23:42:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.09513","created_at":"2026-05-17T23:42:37Z"},{"alias_kind":"pith_short_12","alias_value":"OQTKLTKFGNCM","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OQTKLTKFGNCMSFTG","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OQTKLTKF","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:3a3d0c53a65dda36d75243a82cafd4a9e36d9d34a7e92ddad5559818aca2001d","target":"graph","created_at":"2026-05-17T23:42:37Z","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":"This paper presents a novel approach for image retrieval and pattern spotting in document image collections. The manual feature engineering is avoided by learning a similarity-based representation using a Siamese Neural Network trained on a previously prepared subset of image pairs from the ImageNet dataset. The learned representation is used to provide the similarity-based feature maps used to find relevant image candidates in the data collection given an image query. A robust experimental protocol based on the public Tobacco800 document image collection shows that the proposed method compare","authors_text":"Alceu S. Britto Jr., Alessandro L. Koerich, Kelly L. Wiggers, Laurent Heutte, Luiz S. Oliveira","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-06-22T22:33:44Z","title":"Image Retrieval and Pattern Spotting using Siamese Neural Network"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.09513","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":"sha256:1b037477264b3dc0b80fdc37382f9d5b09aa8aec56de757493e690b95eb03724","target":"record","created_at":"2026-05-17T23:42:37Z","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":"c1afea08b1d7c2c4549959e63dfabfc121634bf513d69aeffec904da6765eab3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2019-06-22T22:33:44Z","title_canon_sha256":"fdbb9c7326111be3f164888ee59dad7cc8075dba5050c2770e27d2195de6c708"},"schema_version":"1.0","source":{"id":"1906.09513","kind":"arxiv","version":1}},"canonical_sha256":"7426a5cd453344c9166677c9fb256607890fff94f50e125bfea6c45518096e04","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7426a5cd453344c9166677c9fb256607890fff94f50e125bfea6c45518096e04","first_computed_at":"2026-05-17T23:42:37.737368Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:37.737368Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sfUBYOfEjYMYdOS4IfcuEnJ9isIar460qvHBfbUxBp+xdPIkmK6bgRyWNng6Hdvk6sAym8+jyQUYXANBcGByBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:37.738120Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.09513","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1b037477264b3dc0b80fdc37382f9d5b09aa8aec56de757493e690b95eb03724","sha256:3a3d0c53a65dda36d75243a82cafd4a9e36d9d34a7e92ddad5559818aca2001d"],"state_sha256":"b0b8b5d99f7289779a8b08431552e84c4277a36f58e9d915f908145d9a9a956f"}