Cyber Trainground: Building-Scale Virtual Reality for Immersive Presentation Training

Trainground" is a word we coined inspired by the word "playground." It means a place for humans to perform various kinds of training and to also use machine learning to scientifically search for points they need to improve. The cyber trainground is an extension of the trainground to cyberspace. It enables training in virtual spaces that captures and reconstructs various types of information appearing in the real world, such as atmosphere and presence, to achieve an improvement effect that is the same or better than in the real world. In this paper, we build an immersive training space using building-scale VR, a technology that makes a virtual space based on an entire building existing in the real world. The space is used for presentations, allowing students to self-train. The results of a presentation are automatically evaluated by using machine learning or the like and fed back to the user. In this space, users can meet their past selves (more accurately, their avatars), so they can objectively observe their presentations and recognize weak points. We developed a mechanism for recording and reproducing activities in virtual space in detail and a mechanism for applying machine learning to activity records. With these mechanisms, a system for recording, reproducing, and automatically evaluating presentations was developed.