  Multimodal scene search of conversations is essential for unlocking valuable
insights into social dynamics and enhancing our communication. While experts in
conversational analysis have their own knowledge and skills to find key scenes,
a lack of comprehensive, user-friendly tools that streamline the processing of
diverse multimodal queries impedes efficiency and objectivity. To solve it, we
developed Providence, a visual-programming-based tool based on design
considerations derived from a formative study with experts. It enables experts
to combine various machine learning algorithms to capture human behavioral cues
without writing code. Our study showed its preferable usability and
satisfactory output with less cognitive load imposed in accomplishing scene
search tasks of conversations, verifying the importance of its customizability
and transparency. Furthermore, through the in-the-wild trial, we confirmed the
objectivity and reusability of the tool transform experts' workflow, suggesting
the advantage of expert-AI teaming in a highly human-contextual domain.
