{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:W7TUPEH5Z7BWAG7H74DFDLXDUS","short_pith_number":"pith:W7TUPEH5","canonical_record":{"source":{"id":"2210.05423","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-10-11T13:04:59Z","cross_cats_sorted":["cs.CL"],"title_canon_sha256":"1229b24036eddb4081730b8f82a43ec68549f6119f06764221eec8c3c807971b","abstract_canon_sha256":"5503627f5bcb3fa208b5590f8c2e5b7eca84e4580d4c265f9e0f084f6f9adff2"},"schema_version":"1.0"},"canonical_sha256":"b7e74790fdcfc3601be7ff0651aee3a4b334d4528fd81b9d7b782dedf642b40a","source":{"kind":"arxiv","id":"2210.05423","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.05423","created_at":"2026-07-05T06:54:13Z"},{"alias_kind":"arxiv_version","alias_value":"2210.05423v4","created_at":"2026-07-05T06:54:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.05423","created_at":"2026-07-05T06:54:13Z"},{"alias_kind":"pith_short_12","alias_value":"W7TUPEH5Z7BW","created_at":"2026-07-05T06:54:13Z"},{"alias_kind":"pith_short_16","alias_value":"W7TUPEH5Z7BWAG7H","created_at":"2026-07-05T06:54:13Z"},{"alias_kind":"pith_short_8","alias_value":"W7TUPEH5","created_at":"2026-07-05T06:54:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:W7TUPEH5Z7BWAG7H74DFDLXDUS","target":"record","payload":{"canonical_record":{"source":{"id":"2210.05423","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-10-11T13:04:59Z","cross_cats_sorted":["cs.CL"],"title_canon_sha256":"1229b24036eddb4081730b8f82a43ec68549f6119f06764221eec8c3c807971b","abstract_canon_sha256":"5503627f5bcb3fa208b5590f8c2e5b7eca84e4580d4c265f9e0f084f6f9adff2"},"schema_version":"1.0"},"canonical_sha256":"b7e74790fdcfc3601be7ff0651aee3a4b334d4528fd81b9d7b782dedf642b40a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:54:13.377142Z","signature_b64":"/tVD+0BdsY3J8y0Q3jtn/tEMgVHjxL5d6CpND4QON4fqcgnaWFJmJG2+xvtt5nuEATw13wL5Wn0+NLDkiT9ADQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b7e74790fdcfc3601be7ff0651aee3a4b334d4528fd81b9d7b782dedf642b40a","last_reissued_at":"2026-07-05T06:54:13.376722Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:54:13.376722Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2210.05423","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:54:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NRSaNBVjPnt5hBMdHO4hx8Mcz/CZSZlcAi4tPy8SnnjWbo/dtVO7rwsXcMI6s7mxAFS3COs+Juxh+pGArg+fAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T13:51:14.296762Z"},"content_sha256":"0bb359c5028f8451f9565aa7b43b06f791b7ebaa5e37010221397c1cae8fb216","schema_version":"1.0","event_id":"sha256:0bb359c5028f8451f9565aa7b43b06f791b7ebaa5e37010221397c1cae8fb216"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:W7TUPEH5Z7BWAG7H74DFDLXDUS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Learning to Locate Visual Answer in Video Corpus Using Question","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CL"],"primary_cat":"cs.CV","authors_text":"Bin Li, Bin Sun, Shutao Li, Yixuan Weng","submitted_at":"2022-10-11T13:04:59Z","abstract_excerpt":"We introduce a new task, named video corpus visual answer localization (VCVAL), which aims to locate the visual answer in a large collection of untrimmed instructional videos using a natural language question. This task requires a range of skills - the interaction between vision and language, video retrieval, passage comprehension, and visual answer localization. In this paper, we propose a cross-modal contrastive global-span (CCGS) method for the VCVAL, jointly training the video corpus retrieval and visual answer localization subtasks with the global-span matrix. We have reconstructed a data"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.05423","kind":"arxiv","version":4},"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/2210.05423/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":"2026-07-05T06:54:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WRkDmh8yMpNgolrkIFxGr620bJLekl3zVy/eZ8BX7nFuu6Y6FAnzm3jRBLRG3m568kzrsyYeTQ0VB1xu7qdsCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T13:51:14.297265Z"},"content_sha256":"9e0ebff6e769ff22dd9b59785273826dd1b4addf083d0d0c35d0cc0b59a1e0be","schema_version":"1.0","event_id":"sha256:9e0ebff6e769ff22dd9b59785273826dd1b4addf083d0d0c35d0cc0b59a1e0be"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W7TUPEH5Z7BWAG7H74DFDLXDUS/bundle.json","state_url":"https://pith.science/pith/W7TUPEH5Z7BWAG7H74DFDLXDUS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W7TUPEH5Z7BWAG7H74DFDLXDUS/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":"2026-08-08T13:51:14Z","links":{"resolver":"https://pith.science/pith/W7TUPEH5Z7BWAG7H74DFDLXDUS","bundle":"https://pith.science/pith/W7TUPEH5Z7BWAG7H74DFDLXDUS/bundle.json","state":"https://pith.science/pith/W7TUPEH5Z7BWAG7H74DFDLXDUS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W7TUPEH5Z7BWAG7H74DFDLXDUS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:W7TUPEH5Z7BWAG7H74DFDLXDUS","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":"5503627f5bcb3fa208b5590f8c2e5b7eca84e4580d4c265f9e0f084f6f9adff2","cross_cats_sorted":["cs.CL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-10-11T13:04:59Z","title_canon_sha256":"1229b24036eddb4081730b8f82a43ec68549f6119f06764221eec8c3c807971b"},"schema_version":"1.0","source":{"id":"2210.05423","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.05423","created_at":"2026-07-05T06:54:13Z"},{"alias_kind":"arxiv_version","alias_value":"2210.05423v4","created_at":"2026-07-05T06:54:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.05423","created_at":"2026-07-05T06:54:13Z"},{"alias_kind":"pith_short_12","alias_value":"W7TUPEH5Z7BW","created_at":"2026-07-05T06:54:13Z"},{"alias_kind":"pith_short_16","alias_value":"W7TUPEH5Z7BWAG7H","created_at":"2026-07-05T06:54:13Z"},{"alias_kind":"pith_short_8","alias_value":"W7TUPEH5","created_at":"2026-07-05T06:54:13Z"}],"graph_snapshots":[{"event_id":"sha256:9e0ebff6e769ff22dd9b59785273826dd1b4addf083d0d0c35d0cc0b59a1e0be","target":"graph","created_at":"2026-07-05T06:54:13Z","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/2210.05423/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We introduce a new task, named video corpus visual answer localization (VCVAL), which aims to locate the visual answer in a large collection of untrimmed instructional videos using a natural language question. This task requires a range of skills - the interaction between vision and language, video retrieval, passage comprehension, and visual answer localization. In this paper, we propose a cross-modal contrastive global-span (CCGS) method for the VCVAL, jointly training the video corpus retrieval and visual answer localization subtasks with the global-span matrix. We have reconstructed a data","authors_text":"Bin Li, Bin Sun, Shutao Li, Yixuan Weng","cross_cats":["cs.CL"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-10-11T13:04:59Z","title":"Learning to Locate Visual Answer in Video Corpus Using Question"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.05423","kind":"arxiv","version":4},"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":"sha256:0bb359c5028f8451f9565aa7b43b06f791b7ebaa5e37010221397c1cae8fb216","target":"record","created_at":"2026-07-05T06:54:13Z","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":"5503627f5bcb3fa208b5590f8c2e5b7eca84e4580d4c265f9e0f084f6f9adff2","cross_cats_sorted":["cs.CL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2022-10-11T13:04:59Z","title_canon_sha256":"1229b24036eddb4081730b8f82a43ec68549f6119f06764221eec8c3c807971b"},"schema_version":"1.0","source":{"id":"2210.05423","kind":"arxiv","version":4}},"canonical_sha256":"b7e74790fdcfc3601be7ff0651aee3a4b334d4528fd81b9d7b782dedf642b40a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b7e74790fdcfc3601be7ff0651aee3a4b334d4528fd81b9d7b782dedf642b40a","first_computed_at":"2026-07-05T06:54:13.376722Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:54:13.376722Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/tVD+0BdsY3J8y0Q3jtn/tEMgVHjxL5d6CpND4QON4fqcgnaWFJmJG2+xvtt5nuEATw13wL5Wn0+NLDkiT9ADQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:54:13.377142Z","signed_message":"canonical_sha256_bytes"},"source_id":"2210.05423","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0bb359c5028f8451f9565aa7b43b06f791b7ebaa5e37010221397c1cae8fb216","sha256:9e0ebff6e769ff22dd9b59785273826dd1b4addf083d0d0c35d0cc0b59a1e0be"],"state_sha256":"de9779653e2aa9ec2c45df7fb5b466c9e9c14e04820e21d378d538c69d3e841d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bGnXadMYyWaDu4Ez5jfbsz+rRZlgY+Juyh6uXXJw0ROByOiBF0IA+SlVDvNCNanik/y+VrcmiJVu3S2niFrQBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T13:51:14.300544Z","bundle_sha256":"4fddea9b067bf56f5eba124489f9803b5eb9510545027cc6d6c4d481900df668"}}