{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:NGYQOZYSS2CJZXDW3QQTZ4SEOF","short_pith_number":"pith:NGYQOZYS","canonical_record":{"source":{"id":"2011.02273","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2020-11-02T14:20:19Z","cross_cats_sorted":["cs.IR","cs.LG","stat.ML"],"title_canon_sha256":"1bea60c268c15995a961de3e2bcb385f88b98288089023b18eb465bc9376f275","abstract_canon_sha256":"2baed252bd25b44d3a9108ec13c71b2934c11b79895200facd8f9e2d58182f5c"},"schema_version":"1.0"},"canonical_sha256":"69b107671296849cdc76dc213cf2447162877732e551018b8c58b23764691b1d","source":{"kind":"arxiv","id":"2011.02273","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.02273","created_at":"2026-07-05T01:49:11Z"},{"alias_kind":"arxiv_version","alias_value":"2011.02273v1","created_at":"2026-07-05T01:49:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.02273","created_at":"2026-07-05T01:49:11Z"},{"alias_kind":"pith_short_12","alias_value":"NGYQOZYSS2CJ","created_at":"2026-07-05T01:49:11Z"},{"alias_kind":"pith_short_16","alias_value":"NGYQOZYSS2CJZXDW","created_at":"2026-07-05T01:49:11Z"},{"alias_kind":"pith_short_8","alias_value":"NGYQOZYS","created_at":"2026-07-05T01:49:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:NGYQOZYSS2CJZXDW3QQTZ4SEOF","target":"record","payload":{"canonical_record":{"source":{"id":"2011.02273","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2020-11-02T14:20:19Z","cross_cats_sorted":["cs.IR","cs.LG","stat.ML"],"title_canon_sha256":"1bea60c268c15995a961de3e2bcb385f88b98288089023b18eb465bc9376f275","abstract_canon_sha256":"2baed252bd25b44d3a9108ec13c71b2934c11b79895200facd8f9e2d58182f5c"},"schema_version":"1.0"},"canonical_sha256":"69b107671296849cdc76dc213cf2447162877732e551018b8c58b23764691b1d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:49:11.153347Z","signature_b64":"cOyPpbM+jNdegPsfwGG8CW+4gHxtwpuZDn8ZOEoUUx5eheE3swhgSutsn/+ttAaRpkAZktIYWIvVkkF5l5SSAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"69b107671296849cdc76dc213cf2447162877732e551018b8c58b23764691b1d","last_reissued_at":"2026-07-05T01:49:11.152918Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:49:11.152918Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.02273","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":"2026-07-05T01:49:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Lj9E8Sj6yWLSxD0LoqklKmhnTLo/GkjnnIhwbtsstA/Pd4Vxcqh6LQEKEWleo48rlmgrLmBImURO/yj+SAVBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T21:46:17.629715Z"},"content_sha256":"e55c8d6fdef34310a787df2cae52688dbba546a462a2d9d55c9eaf133ebbce61","schema_version":"1.0","event_id":"sha256:e55c8d6fdef34310a787df2cae52688dbba546a462a2d9d55c9eaf133ebbce61"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:NGYQOZYSS2CJZXDW3QQTZ4SEOF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"VLEngagement: A Dataset of Scientific Video Lectures for Evaluating Population-based Engagement","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.IR","cs.LG","stat.ML"],"primary_cat":"cs.CY","authors_text":"Emine Yilmaz, John Shawe-Taylor, Maria Perez-Ortiz, Sahan Bulathwela","submitted_at":"2020-11-02T14:20:19Z","abstract_excerpt":"With the emergence of e-learning and personalised education, the production and distribution of digital educational resources have boomed. Video lectures have now become one of the primary modalities to impart knowledge to masses in the current digital age. The rapid creation of video lecture content challenges the currently established human-centred moderation and quality assurance pipeline, demanding for more efficient, scalable and automatic solutions for managing learning resources. Although a few datasets related to engagement with educational videos exist, there is still an important nee"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.02273","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2011.02273/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":"2026-07-05T01:49:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5un7faRTUlWYYZgvmj+ps7QanllRZLBKOyCr0mLqFsij+tJjDNimAEzFdYlpV6EcVkku7vVdsu4+6x95lXe5Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T21:46:17.631237Z"},"content_sha256":"915a32dd8e93c497a23595a3c5319434e16ebb9db587aa171ead00d29c9597c8","schema_version":"1.0","event_id":"sha256:915a32dd8e93c497a23595a3c5319434e16ebb9db587aa171ead00d29c9597c8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NGYQOZYSS2CJZXDW3QQTZ4SEOF/bundle.json","state_url":"https://pith.science/pith/NGYQOZYSS2CJZXDW3QQTZ4SEOF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NGYQOZYSS2CJZXDW3QQTZ4SEOF/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":"2026-08-05T21:46:17Z","links":{"resolver":"https://pith.science/pith/NGYQOZYSS2CJZXDW3QQTZ4SEOF","bundle":"https://pith.science/pith/NGYQOZYSS2CJZXDW3QQTZ4SEOF/bundle.json","state":"https://pith.science/pith/NGYQOZYSS2CJZXDW3QQTZ4SEOF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NGYQOZYSS2CJZXDW3QQTZ4SEOF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:NGYQOZYSS2CJZXDW3QQTZ4SEOF","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":"2baed252bd25b44d3a9108ec13c71b2934c11b79895200facd8f9e2d58182f5c","cross_cats_sorted":["cs.IR","cs.LG","stat.ML"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2020-11-02T14:20:19Z","title_canon_sha256":"1bea60c268c15995a961de3e2bcb385f88b98288089023b18eb465bc9376f275"},"schema_version":"1.0","source":{"id":"2011.02273","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.02273","created_at":"2026-07-05T01:49:11Z"},{"alias_kind":"arxiv_version","alias_value":"2011.02273v1","created_at":"2026-07-05T01:49:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.02273","created_at":"2026-07-05T01:49:11Z"},{"alias_kind":"pith_short_12","alias_value":"NGYQOZYSS2CJ","created_at":"2026-07-05T01:49:11Z"},{"alias_kind":"pith_short_16","alias_value":"NGYQOZYSS2CJZXDW","created_at":"2026-07-05T01:49:11Z"},{"alias_kind":"pith_short_8","alias_value":"NGYQOZYS","created_at":"2026-07-05T01:49:11Z"}],"graph_snapshots":[{"event_id":"sha256:915a32dd8e93c497a23595a3c5319434e16ebb9db587aa171ead00d29c9597c8","target":"graph","created_at":"2026-07-05T01:49:11Z","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/2011.02273/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"With the emergence of e-learning and personalised education, the production and distribution of digital educational resources have boomed. Video lectures have now become one of the primary modalities to impart knowledge to masses in the current digital age. The rapid creation of video lecture content challenges the currently established human-centred moderation and quality assurance pipeline, demanding for more efficient, scalable and automatic solutions for managing learning resources. Although a few datasets related to engagement with educational videos exist, there is still an important nee","authors_text":"Emine Yilmaz, John Shawe-Taylor, Maria Perez-Ortiz, Sahan Bulathwela","cross_cats":["cs.IR","cs.LG","stat.ML"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2020-11-02T14:20:19Z","title":"VLEngagement: A Dataset of Scientific Video Lectures for Evaluating Population-based Engagement"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.02273","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:e55c8d6fdef34310a787df2cae52688dbba546a462a2d9d55c9eaf133ebbce61","target":"record","created_at":"2026-07-05T01:49:11Z","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":"2baed252bd25b44d3a9108ec13c71b2934c11b79895200facd8f9e2d58182f5c","cross_cats_sorted":["cs.IR","cs.LG","stat.ML"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2020-11-02T14:20:19Z","title_canon_sha256":"1bea60c268c15995a961de3e2bcb385f88b98288089023b18eb465bc9376f275"},"schema_version":"1.0","source":{"id":"2011.02273","kind":"arxiv","version":1}},"canonical_sha256":"69b107671296849cdc76dc213cf2447162877732e551018b8c58b23764691b1d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"69b107671296849cdc76dc213cf2447162877732e551018b8c58b23764691b1d","first_computed_at":"2026-07-05T01:49:11.152918Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:49:11.152918Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cOyPpbM+jNdegPsfwGG8CW+4gHxtwpuZDn8ZOEoUUx5eheE3swhgSutsn/+ttAaRpkAZktIYWIvVkkF5l5SSAA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:49:11.153347Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.02273","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e55c8d6fdef34310a787df2cae52688dbba546a462a2d9d55c9eaf133ebbce61","sha256:915a32dd8e93c497a23595a3c5319434e16ebb9db587aa171ead00d29c9597c8"],"state_sha256":"47876873ade2a2e053beb6d24395cdaedebd42c57dbc6fc1922d6c9f10e7f03a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lNq+1AUOnmPi+w38Msicgmq3Hi8PnlYSAY//VoNcZB19aI1nCEXxxRU6M2VV4p+ygiCWXjT87ewWyDRwh5SfBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T21:46:17.641493Z","bundle_sha256":"8c6b38a9b0f5c73bd6d9887267bcfa92e6d08cdea4cca1234eb5bf001536ed81"}}