{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:VQSMNEM65FUW2WIXYQTSXV474V","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":"e172f410cf7ca54f30dcfc07ddcbc12b020416e064a013696dc71795fe07caa9","cross_cats_sorted":["cs.AI","cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2017-11-08T20:26:40Z","title_canon_sha256":"0ed98f73626c532b0a599a9cedb5534355257e6649a3a7ad1157f70623a60b78"},"schema_version":"1.0","source":{"id":"1711.03536","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.03536","created_at":"2026-05-18T00:30:54Z"},{"alias_kind":"arxiv_version","alias_value":"1711.03536v1","created_at":"2026-05-18T00:30:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.03536","created_at":"2026-05-18T00:30:54Z"},{"alias_kind":"pith_short_12","alias_value":"VQSMNEM65FUW","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VQSMNEM65FUW2WIX","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VQSMNEM6","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:4492aa53574fc1f0bf1cca6f6f77a6365ea483e3ef66c8de92d30189c032b0b6","target":"graph","created_at":"2026-05-18T00:30:54Z","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 proposes a computational approach for analysis of strokes in line drawings by artists. We aim at developing an AI methodology that facilitates attribution of drawings of unknown authors in a way that is not easy to be deceived by forged art. The methodology used is based on quantifying the characteristics of individual strokes in drawings. We propose a novel algorithm for segmenting individual strokes. We designed and compared different hand-crafted and learned features for the task of quantifying stroke characteristics. We also propose and compare different classification methods a","authors_text":"Ahmed Elgammal, Milko Den Leeuw, Yan Kang","cross_cats":["cs.AI","cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2017-11-08T20:26:40Z","title":"Picasso, Matisse, or a Fake? Automated Analysis of Drawings at the Stroke Level for Attribution and Authentication"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.03536","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":"sha256:420cbda0f3f0fa06fbdae7a72f046d0976b5d0ffed031f94eaaad293d53b26dc","target":"record","created_at":"2026-05-18T00:30:54Z","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":"e172f410cf7ca54f30dcfc07ddcbc12b020416e064a013696dc71795fe07caa9","cross_cats_sorted":["cs.AI","cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2017-11-08T20:26:40Z","title_canon_sha256":"0ed98f73626c532b0a599a9cedb5534355257e6649a3a7ad1157f70623a60b78"},"schema_version":"1.0","source":{"id":"1711.03536","kind":"arxiv","version":1}},"canonical_sha256":"ac24c6919ee9696d5917c4272bd79fe554e5a102ecc840204c0946f1398c71e2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ac24c6919ee9696d5917c4272bd79fe554e5a102ecc840204c0946f1398c71e2","first_computed_at":"2026-05-18T00:30:54.319658Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:30:54.319658Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1BuYM5CduQA2VLCUQs1AG8Mkf/qjz1O1CfmTl8jNfy5xqbmH0cd6DpIpw7sDtTo9Ob7xVgtTl6a6TJy7bFL5AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:30:54.320295Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.03536","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:420cbda0f3f0fa06fbdae7a72f046d0976b5d0ffed031f94eaaad293d53b26dc","sha256:4492aa53574fc1f0bf1cca6f6f77a6365ea483e3ef66c8de92d30189c032b0b6"],"state_sha256":"a8ee15325ba720979022daa15043eb4a8c011f0d7fc5768244b5b788bfbbe6c4"}