{"schema_version":"papers/paper-detail-v1","title":"Query-Conditioned Evidential Keyframe Sampling for MLLM-Based Long-Form Video Understanding","surface":"papers","opportunity_kernel":{"paper_id":"605327ee-9c50-4ca0-bb2e-d605902fca39","title":"Query-Conditioned Evidential Keyframe Sampling for MLLM-Based Long-Form Video Understanding","authors":["Yiheng Wang","Lichen Zhu","Yueqian Lin","Yudong Liu","Jingyang Zhang","Hai \"Helen\" Li","Yiran Chen"],"arxiv_id":"2604.01002v1","doi":null,"published_at":"2026-04-01T15:02:50.000Z","score_object":{"overall":{"value":7,"scale":"0-10","confidence":0.85,"confidence_reason":"Backfilled from persisted papers.viability_score.","model_version":"phase0-backfill-v1","pipeline_version":"phase0-kernel-v1","computed_at":"2026-04-02T20:55:15.990Z","fresh_until":"2026-05-02T20:55:15.990Z","is_stale":true,"source_count":1,"missingness":[]},"technical":{"value":2,"scale":"0-10","confidence":0.55,"confidence_reason":"Backfilled from paper_extraction_scorecards.reconstruction_score.","model_version":"phase0-backfill-v1","pipeline_version":"phase0-kernel-v1","computed_at":"2026-04-02T20:58:41.051Z","fresh_until":"2026-04-16T20:58:41.051Z","is_stale":true,"source_count":1,"missingness":["reproducibility_results.reproducibility_score","deployability_scores.score"]},"commercial":{"value":4,"scale":"0-10","confidence":0.75,"confidence_reason":"Backfilled from persisted commercial_flags and repo availability.","model_version":"phase0-backfill-v1","pipeline_version":"phase0-kernel-v1","computed_at":"2026-04-02T20:55:15.990Z","fresh_until":"2026-05-02T20:55:15.990Z","is_stale":true,"source_count":1,"missingness":[]},"market":{"value":4.9,"scale":"0-10","confidence":0.34,"confidence_reason":"Estimated from commercial flags, repo presence, author coverage, and market-language heuristics because no persisted distribution_readiness_scores row was available.","model_version":"phase0-backfill-v1","pipeline_version":"phase0-kernel-v1","computed_at":"2026-04-02T20:55:15.990Z","fresh_until":"2026-04-16T20:55:15.990Z","is_stale":true,"source_count":5,"missingness":["distribution_readiness_scores.score"]},"team":{"value":6,"scale":"0-10","confidence":0.31,"confidence_reason":"Estimated from author count, repo presence, and summary coverage because no persisted team-quality evidence was available.","model_version":"phase0-backfill-v1","pipeline_version":"phase0-kernel-v1","computed_at":"2026-04-02T20:55:15.990Z","fresh_until":"2026-04-16T20:55:15.990Z","is_stale":true,"source_count":3,"missingness":["engineer_profiles.builder_score","author_startups"]},"methodology":{"value":6.9,"scale":"0-10","confidence":0.82,"confidence_reason":"Backfilled from paper_extraction_scorecards.total_score.","model_version":"phase0-backfill-v1","pipeline_version":"phase0-kernel-v1","computed_at":"2026-04-02T20:58:41.051Z","fresh_until":"2026-05-02T20:58:41.051Z","is_stale":true,"source_count":2,"missingness":[]}},"evidence_receipt":{"freshness":"stale","proof_status":"unverified","repo_status":"missing","references_count":56,"source_count":3,"coverage":0.5,"missingness":["repo_url","proof_status","distribution_readiness_scores"],"unresolved_unknowns":["distribution readiness has not been computed yet","proof verification has not been recorded yet"],"last_verification_at":"2026-04-02T20:58:41.051Z"},"lineage_hash":"5260b76675b154b00a2b13f4557995720fb97e2a3f9c0e9ca0054c8a8b31a7a5"},"distribution":null,"replication_evidence":[],"author_dna":[]}