Identifying Visible Actions in Lifestyle Vlogs
Table 5: Visible actions with high concreteness scores (Con.), and non-visible actions with low concreteness scores. The noun or verb with the highest concreteness score is in bold.
['Action', 'Con.', 'Visible?']
Concreteness. Our hypothesis is that the concreteness of the words in an action is related to its visibility in a video. We use a dataset of words with associated concreteness scores from Brysbaert et al. Each word is labeled by a human annotator with a value between 1 (very abstract) and 5 (very concrete). The percentage of actions from our dataset that have at least one word in the concreteness dataset is 99.8%. For each action, we use the concreteness scores of the verbs and nouns in the action. We consider the concreteness score of an action to be the highest concreteness score of its corresponding verbs and nouns.