{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:6DZIBVJUF7FPRK42FZTDNZHNXU","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":"999835ce02d1670f79451e187fc5a22d99a53f57945b0d120c4df486bc03eb6a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-03-02T13:43:11Z","title_canon_sha256":"679372ef1a7faca9491fe1dd3e48f6f2a035fcce54fda60d233071b7626c4680"},"schema_version":"1.0","source":{"id":"2103.01716","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.01716","created_at":"2026-07-05T03:39:57Z"},{"alias_kind":"arxiv_version","alias_value":"2103.01716v3","created_at":"2026-07-05T03:39:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.01716","created_at":"2026-07-05T03:39:57Z"},{"alias_kind":"pith_short_12","alias_value":"6DZIBVJUF7FP","created_at":"2026-07-05T03:39:57Z"},{"alias_kind":"pith_short_16","alias_value":"6DZIBVJUF7FPRK42","created_at":"2026-07-05T03:39:57Z"},{"alias_kind":"pith_short_8","alias_value":"6DZIBVJU","created_at":"2026-07-05T03:39:57Z"}],"graph_snapshots":[{"event_id":"sha256:c8debc70eda9ff3792f5f62fb99a001a94b90e4e9144ee414df7d5bd218f1160","target":"graph","created_at":"2026-07-05T03:39:57Z","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/2103.01716/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Using the face as a biometric identity trait is motivated by the contactless nature of the capture process and the high accuracy of the recognition algorithms. After the current COVID-19 pandemic, wearing a face mask has been imposed in public places to keep the pandemic under control. However, face occlusion due to wearing a mask presents an emerging challenge for face recognition systems. In this paper, we present a solution to improve masked face recognition performance. Specifically, we propose the Embedding Unmasking Model (EUM) operated on top of existing face recognition models. We also","authors_text":"Arjan Kuijper, Fadi Boutros, Florian Kirchbuchner, Naser Damer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-03-02T13:43:11Z","title":"Self-restrained Triplet Loss for Accurate Masked Face Recognition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.01716","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:eb3f1a93bc26551274ee76cd9d14d70178dd3c29d407bfb8185252204d8817e6","target":"record","created_at":"2026-07-05T03:39:57Z","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":"999835ce02d1670f79451e187fc5a22d99a53f57945b0d120c4df486bc03eb6a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2021-03-02T13:43:11Z","title_canon_sha256":"679372ef1a7faca9491fe1dd3e48f6f2a035fcce54fda60d233071b7626c4680"},"schema_version":"1.0","source":{"id":"2103.01716","kind":"arxiv","version":3}},"canonical_sha256":"f0f280d5342fcaf8ab9a2e6636e4edbd0c23b5d8d96ef2e98ebb2532c2a03b02","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f0f280d5342fcaf8ab9a2e6636e4edbd0c23b5d8d96ef2e98ebb2532c2a03b02","first_computed_at":"2026-07-05T03:39:57.423279Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:39:57.423279Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8oR5HkR57YTttZdH4RKTPHNjnLJvfTSC7puhhSgKzv8I2BkKWBJjtIo3U7uunqkl2id+4z25YAFtFOj0o4JnAw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:39:57.423753Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.01716","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eb3f1a93bc26551274ee76cd9d14d70178dd3c29d407bfb8185252204d8817e6","sha256:c8debc70eda9ff3792f5f62fb99a001a94b90e4e9144ee414df7d5bd218f1160"],"state_sha256":"d8111bfdae9992c242f2f2b1b3b11a4d2eccef5d0d3ccdb08b1d5c6dad723958"}