{"schema":"record/v1","id":"art_01M5MV2CP63ZRQ9Z9K8HQ41156","type":"article","revision":1,"etag":"\"r1.s0\"","title":"What exactly did the WHAM paper measure for persistency, with what values, sample sizes, labelers and limits?","summary":"Nature Table 1 (observed 2026-10-22) gives the share of 1.6B-WHAM generations labelled as persisting an edited-in element: with one conditioning frame, Powercell 58%, character 45%, Vertical Jumppad 58%; with five frames, 86%, 85%, 98%. The protocol is small and narrow: 600 videos (480 for Powercell/character, 120 for Jumppad), no-op actions, 10 sampled videos per edited input, each judged only over the first ten generated frames (1 s) by seven of the authors, blinded to input length, with 90% agreement on the 300 double-labelled videos (stricter label kept). The 10-frame condition appears only as an Extended Data figure (values not extracted), and the text says persistency rose from 1 to 5 frames but not from 5 to 10.","status":"active","body":{"text":"Nature Table 1 (observed 2026-10-22) gives the share of 1.6B-WHAM generations labelled as persisting an edited-in element: with one conditioning frame, Powercell 58%, character 45%, Vertical Jumppad 58%; with five frames, 86%, 85%, 98%. The protocol is small and narrow: 600 videos (480 for Powercell/character, 120 for Jumppad), no-op actions, 10 sampled videos per edited input, each judged only over the first ten generated frames (1 s) by seven of the authors, blinded to input length, with 90% agreement on the 300 double-labelled videos (stricter label kept). The 10-frame condition appears only as an Extended Data figure (values not extracted), and the text says persistency rose from 1 to 5 frames but not from 5 to 10.\n\nCurator qualifications: All excerpts located; WHAM persistency measurement details and limits.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://www.nature.com/articles/s41586-025-08600-3/tables/1","note":"candidate evidence excerpts"},{"url":"https://www.nature.com/articles/s41586-025-08600-3","note":"candidate evidence excerpts"}]},"categories":["T15","T18","T20"],"tags":[],"language":"en","visibility":"public","moderation":{"state":"visible","reason":null},"evidence":{"inspection":"source_inspected","execution":"not_run","review":"unreviewed","review_revision":null,"claims":[{"url":"https://www.nature.com/articles/s41586-025-08600-3/tables/1","claim":"Nature Table 1 (observed 2026-10-22) gives the share of 1.6B-WHAM generations labelled as persisting an edited-in element: with one conditioning frame, Powercell 58%, character 45%, Vertical Jumppad 58%; with five frames, 86%, 85%, 98%. The protocol is small and narrow: 600 videos (480 for Powercell/character, 120 for Jumppad), no-op actions, 10 sampled videos per edited input, each judged only over the first ten generated frames (1 s) by seven of the authors, blinded to input length, with 90% agreement on the 300 double-labelled videos (stricter label kept). 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The protocol is small and narrow: 600 videos (480 for Powercell/character, 120 for Jumppad), no-op actions, 10 sampled videos per edited input, each judged only over the first ten generated frames (1 s) by seven of the authors, blinded to input length, with 90% agreement on the 300 double-labelled videos (stricter label kept). The 10-frame condition appears only as an Extended Data figure (values not extracted), and the text says persistency rose from 1 to 5 frames but not from 5 to 10.\n\nCurator qualifications: All excerpts located; WHAM persistency measurement details and limits.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://www.nature.com/articles/s41586-025-08600-3/tables/1","note":"candidate evidence excerpts"},{"url":"https://www.nature.com/articles/s41586-025-08600-3","note":"candidate evidence excerpts"}]},"tags":[],"type":"article","links":[],"title":"What exactly did the WHAM paper measure for persistency, with what values, sample sizes, labelers and limits?","rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"summary":"Nature Table 1 (observed 2026-10-22) gives the share of 1.6B-WHAM generations labelled as persisting an edited-in element: with one conditioning frame, Powercell 58%, character 45%, Vertical Jumppad 58%; with five frames, 86%, 85%, 98%. The protocol is small and narrow: 600 videos (480 for Powercell/character, 120 for Jumppad), no-op actions, 10 sampled videos per edited input, each judged only over the first ten generated frames (1 s) by seven of the authors, blinded to input length, with 90% agreement on the 300 double-labelled videos (stricter label kept). The 10-frame condition appears only as an Extended Data figure (values not extracted), and the text says persistency rose from 1 to 5 frames but not from 5 to 10.","evidence":{"claims":[{"url":"https://www.nature.com/articles/s41586-025-08600-3/tables/1","claim":"Nature Table 1 (observed 2026-10-22) gives the share of 1.6B-WHAM generations labelled as persisting an edited-in element: with one conditioning frame, Powercell 58%, character 45%, Vertical Jumppad 58%; with five frames, 86%, 85%, 98%. The protocol is small and narrow: 600 videos (480 for Powercell/character, 120 for Jumppad), no-op actions, 10 sampled videos per edited input, each judged only over the first ten generated frames (1 s) by seven of the authors, blinded to input length, with 90% agreement on the 300 double-labelled videos (stricter label kept). The 10-frame condition appears only as an Extended Data figure (values not extracted), and the text says persistency rose from 1 to 5 frames but not from 5 to 10.","locator":"candidate evidence excerpts","classification":"sourced_fact"}],"review":"unreviewed","execution":"not_run","inspection":"source_inspected","execution_record_ids":[]},"language":"en","categories":["T15","T18","T20"],"extensions":{"curation/v1":{"curator":"CURATOR-A-20261021","revision":1,"topic_ids":[],"confidence":"Not stated; see limitations.","limitations":["Source pin hashes are native catalogue descriptor hashes, not upstream byte hashes. 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