{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:OCVDBZLW3ILP4QTGMA7UX26HFZ","short_pith_number":"pith:OCVDBZLW","canonical_record":{"source":{"id":"1907.11115","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-07-25T14:55:16Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"6e5eb86f8b46ac1dfaf85235ec48dde78f6b93b46c1a37ad3fefab4fd13ccfff","abstract_canon_sha256":"9fbf661fcaec36de3a92a77e875c29e2dbb16cb471e55ac702d8542bcdad9712"},"schema_version":"1.0"},"canonical_sha256":"70aa30e576da16fe4266603f4bebc72e5e955ec7a47d6d72fa932e190d554def","source":{"kind":"arxiv","id":"1907.11115","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.11115","created_at":"2026-05-17T23:39:33Z"},{"alias_kind":"arxiv_version","alias_value":"1907.11115v1","created_at":"2026-05-17T23:39:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.11115","created_at":"2026-05-17T23:39:33Z"},{"alias_kind":"pith_short_12","alias_value":"OCVDBZLW3ILP","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OCVDBZLW3ILP4QTG","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OCVDBZLW","created_at":"2026-05-18T12:33:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:OCVDBZLW3ILP4QTGMA7UX26HFZ","target":"record","payload":{"canonical_record":{"source":{"id":"1907.11115","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-07-25T14:55:16Z","cross_cats_sorted":["cs.CV"],"title_canon_sha256":"6e5eb86f8b46ac1dfaf85235ec48dde78f6b93b46c1a37ad3fefab4fd13ccfff","abstract_canon_sha256":"9fbf661fcaec36de3a92a77e875c29e2dbb16cb471e55ac702d8542bcdad9712"},"schema_version":"1.0"},"canonical_sha256":"70aa30e576da16fe4266603f4bebc72e5e955ec7a47d6d72fa932e190d554def","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:39:33.469202Z","signature_b64":"7/au14KuR6zQhnmQXwJ+ozg16BrqSAuYYuQRBivyDT244sG3fYHCa4NAThA16A4RyGMHh/8bD0gaL2yABAS4AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"70aa30e576da16fe4266603f4bebc72e5e955ec7a47d6d72fa932e190d554def","last_reissued_at":"2026-05-17T23:39:33.468626Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:39:33.468626Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.11115","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:39:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gcn2OLm+KhvIS3AH0/V6cLaCvw1+aula2vm2/A62OjGJ5N9674TG17I7o0h2x245TL443O0EyBFyjMEH0qpcBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T22:48:54.564158Z"},"content_sha256":"387a9a552fcfa4539166d3956409ae6c17d9710ec1d353c1b8eab4cd38fd3cc8","schema_version":"1.0","event_id":"sha256:387a9a552fcfa4539166d3956409ae6c17d9710ec1d353c1b8eab4cd38fd3cc8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:OCVDBZLW3ILP4QTGMA7UX26HFZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Accurate and Robust Eye Contact Detection During Everyday Mobile Device Interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV"],"primary_cat":"cs.HC","authors_text":"Andreas Bulling, Mihai B\\^ace, Sander Staal","submitted_at":"2019-07-25T14:55:16Z","abstract_excerpt":"Quantification of human attention is key to several tasks in mobile human-computer interaction (HCI), such as predicting user interruptibility, estimating noticeability of user interface content, or measuring user engagement. Previous works to study mobile attentive behaviour required special-purpose eye tracking equipment or constrained users' mobility. We propose a novel method to sense and analyse visual attention on mobile devices during everyday interactions. We demonstrate the capabilities of our method on the sample task of eye contact detection that has recently attracted increasing re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.11115","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-17T23:39:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"STmPFKyY8ED6vo3YlRcd/FEszrZXOP+m8iuNXMq5KmPu9fl0vEdrOoV9y8JcSNEgBGHTmE9UaYloK8udSWbyBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T22:48:54.564529Z"},"content_sha256":"9de573c2fccd7724c8bd8a69147f6e9bbb01a476956547f37bd5b8976a3656c4","schema_version":"1.0","event_id":"sha256:9de573c2fccd7724c8bd8a69147f6e9bbb01a476956547f37bd5b8976a3656c4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OCVDBZLW3ILP4QTGMA7UX26HFZ/bundle.json","state_url":"https://pith.science/pith/OCVDBZLW3ILP4QTGMA7UX26HFZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OCVDBZLW3ILP4QTGMA7UX26HFZ/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":"2026-06-19T22:48:54Z","links":{"resolver":"https://pith.science/pith/OCVDBZLW3ILP4QTGMA7UX26HFZ","bundle":"https://pith.science/pith/OCVDBZLW3ILP4QTGMA7UX26HFZ/bundle.json","state":"https://pith.science/pith/OCVDBZLW3ILP4QTGMA7UX26HFZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OCVDBZLW3ILP4QTGMA7UX26HFZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:OCVDBZLW3ILP4QTGMA7UX26HFZ","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":"9fbf661fcaec36de3a92a77e875c29e2dbb16cb471e55ac702d8542bcdad9712","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-07-25T14:55:16Z","title_canon_sha256":"6e5eb86f8b46ac1dfaf85235ec48dde78f6b93b46c1a37ad3fefab4fd13ccfff"},"schema_version":"1.0","source":{"id":"1907.11115","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.11115","created_at":"2026-05-17T23:39:33Z"},{"alias_kind":"arxiv_version","alias_value":"1907.11115v1","created_at":"2026-05-17T23:39:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.11115","created_at":"2026-05-17T23:39:33Z"},{"alias_kind":"pith_short_12","alias_value":"OCVDBZLW3ILP","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OCVDBZLW3ILP4QTG","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OCVDBZLW","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:9de573c2fccd7724c8bd8a69147f6e9bbb01a476956547f37bd5b8976a3656c4","target":"graph","created_at":"2026-05-17T23:39:33Z","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":"Quantification of human attention is key to several tasks in mobile human-computer interaction (HCI), such as predicting user interruptibility, estimating noticeability of user interface content, or measuring user engagement. Previous works to study mobile attentive behaviour required special-purpose eye tracking equipment or constrained users' mobility. We propose a novel method to sense and analyse visual attention on mobile devices during everyday interactions. We demonstrate the capabilities of our method on the sample task of eye contact detection that has recently attracted increasing re","authors_text":"Andreas Bulling, Mihai B\\^ace, Sander Staal","cross_cats":["cs.CV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-07-25T14:55:16Z","title":"Accurate and Robust Eye Contact Detection During Everyday Mobile Device Interactions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.11115","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":"sha256:387a9a552fcfa4539166d3956409ae6c17d9710ec1d353c1b8eab4cd38fd3cc8","target":"record","created_at":"2026-05-17T23:39:33Z","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":"9fbf661fcaec36de3a92a77e875c29e2dbb16cb471e55ac702d8542bcdad9712","cross_cats_sorted":["cs.CV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2019-07-25T14:55:16Z","title_canon_sha256":"6e5eb86f8b46ac1dfaf85235ec48dde78f6b93b46c1a37ad3fefab4fd13ccfff"},"schema_version":"1.0","source":{"id":"1907.11115","kind":"arxiv","version":1}},"canonical_sha256":"70aa30e576da16fe4266603f4bebc72e5e955ec7a47d6d72fa932e190d554def","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"70aa30e576da16fe4266603f4bebc72e5e955ec7a47d6d72fa932e190d554def","first_computed_at":"2026-05-17T23:39:33.468626Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:39:33.468626Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7/au14KuR6zQhnmQXwJ+ozg16BrqSAuYYuQRBivyDT244sG3fYHCa4NAThA16A4RyGMHh/8bD0gaL2yABAS4AA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:39:33.469202Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.11115","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:387a9a552fcfa4539166d3956409ae6c17d9710ec1d353c1b8eab4cd38fd3cc8","sha256:9de573c2fccd7724c8bd8a69147f6e9bbb01a476956547f37bd5b8976a3656c4"],"state_sha256":"6af2886a4e02ad75a50254bc5d622169933f7b70d76e4873786416cfc45f0655"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1cuX8scSHEVwpAwVfQSjVm+5ajXmdxvA3M0SgjC9UfPYRVDLtuXEqG/zFnyv9Ef6KestmvEyG/AmnbT2grpyAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-19T22:48:54.566488Z","bundle_sha256":"27efefe17b290700dd6542e249667e31abcff60be0a28aa096435b9ecc900522"}}