PUB - Publikationen an der Universität Bielefeld

In the last decade, there has been increasing interest in allowing users to understand how the predictions of machine-learned models come about, thus increasing transparency and empowering users to understand and potentially contest those decisions. Dialogue-based approaches, in contrast to traditional one-shot eXplainable Artificial Intelligence (xAI) methods, facilitate interactive, in-depth exploration through multi-turn dialogues, simulating human-like interactions, allowing for a dynamic exchange where users can ask questions and receive tailored, relevant explanations in real-time. This paper reviews the current state of dialogue-based xAI, presenting a systematic review of 1339 publications, narrowed down to 15 based on inclusion criteria. We explore theoretical foundations of the systems, propose key dimensions along which different solutions to dialogue-based xAI differ, and identify key use cases, target audiences, system components, and the types of supported queries and responses. Furthermore, we investigate the current paradigms by which systems are evaluated and highlight their key limitations. Key findings include identifying the main use cases, objectives, and audiences targeted by dialogue-based xAI methods, in addition to an overview of the main types of questions and information needs. Beyond discussing avenues for future work, we present a meta-architecture for these systems from existing literature and outlined prevalent theoretical frameworks.