... accu-racy or error rate, but based on their ability to sup-port video information retrieval. 4.3 Precision of Information Retrieval One of the most commonly used applications of ASR for video ... panning slightly left). Audio Context The audio stream of a video can also provide use-ful information for representing non-linguistic con-text. We use boosted decision trees to classify audio ... al., 1996). For example, in the domain of baseball, if a video IR system were is-sued the query “home run,” it would typically re-turn a set of video clips by searching its database for events...