A Representation of Rhythmic Motions
Tsutomu Fujinami, Shohei Hidaka · New Generation Computing · 2019
Skill is an action requiring intelligence. It has been debated whether motions require representations because they are thought to describe procedures. The dichotomy between thought and execution has puzzled us because we are unsure how thinking process intervenes with execution and how execution is understood by thinking process. We have in other words no logical theory of executions. We propose an intermediate level of representation between thought and execution. Hinted by an illustration by a professional musician, we propose to represent the skill knowledge as a phase space. The shape conveys necessary items of information to dance and play samba with different types of instruments thanks to the abstract representation of motions. We show that the shape is established by abstracting over physical particulars such as velocity, direction, position, etc. The abstract form of representation bridges the gap between thought and execution. It also allows masters to transfer his knowledge to pupils. We hypothesise that more layers would exist between thought and execution, enabling the agent to effectively plan and control his motions.