{"url":"/dataset/vlogs","name":"IfAct","full_name":"Identifying Human Actions Visible in Online Vlogs","description_markdown":"We consider the task of **identifying human actions visible in online videos**. \r\nWe focus on the widely spread genre of lifestyle vlogs, which consist of videos of people performing actions while verbally describing them. Our goal is to identify if actions mentioned in the speech description of a video are visually present.\r\n\r\nWe introduce a novel dataset, IfAct, consisting of 1,268 short video clips paired with sets of actions mentioned in the video transcripts, as well as **manual annotations of whether the actions are visible or not**. The dataset includes a total of **14,769 actions, 4,340 of which are visible**.","description_withheld":null,"homepage":"https://github.com/MichiganNLP/vlog_action_recognition","introduced_date":"2019-06-10","introduced_date_note":null,"introduced_by":{"paper":"/paper/identifying-visible-actions-in-lifestyle","title":"Identifying Visible Actions in Lifestyle Vlogs","first_author":"Oana Ignat","url":null},"license":{"name":"MIT","url":"https://github.com/MichiganNLP/vlog_action_recognition/blob/master/LICENSE"},"modalities":[{"name":"Videos","url":"/datasets/modality/videos"},{"name":"Texts","url":"/datasets/modality/texts"}],"tasks":[{"name":"Action Recognition","url":"/task/action-recognition-in-videos","datasets_with_task":"/datasets/task/action-recognition-in-videos"}],"languages":[{"name":"English","url":"/datasets/language/english"}],"variants":["IfAct"],"data_loaders":[],"num_papers_in_archive":3,"source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28"},"benchmarks":[],"papers_with_a_benchmark_row":[],"syntology_totals":{"read_at":"2026-09-24T18:15:14+00:00","papers_with_samples":0,"samples_harvested":0,"samples_ran":0,"samples_unverified":0,"pointer_only_for_licence":0,"papers_with_no_sample_that_ran":0,"note":"the per-paper counts above, summed; not a rate"},"papers_note":"The archive never published its papers-using-dataset list; these are papers with a leaderboard row on this dataset's benchmarks."}