... Word-level features Line-level combination Line-level scores Score N Feature · · · Feature N Score Line-level features Feature Slide- level scores ··· ··· Score Slide- level features Feature L ··· ... result in an overall score for the given slide Slide-level combination, however, requires feature scores to be on a slide- level granularity We must, therefore, transform the word-level and line-level ... respect to the rest of the slide content The highest level in the hierarchy is used for features that describe a slide as a whole; term frequency, for example, is a slide- level feature as it considers...