“…These challenges hint at the potential benefits of involving automatic behavior annotation, in which data-driven machine learning techniques are employed to automatically extract behavioral information directly from data, rather than relying on time-consuming and expensive annotations from human experts. Such behavior analysis work has been shown to be effective at identifying behaviors during interactions in domains such as couple therapy [7,8,9], depression [10,11,12] and suicide risk assessment [13,14,15,16]. However, due to potential domain mismatch, obtaining accurate performance in one domain by utilizing well-trained behavior analysis systems from a different domain is not straightforward.…”