yamazumi chart definition
A Yamazumi chart (or Yamazumi board) is a stacked bar chart that shows the source of the cycle time in a given Process. The chart is used to graphically represent processes for optimization purposes. Overview . Yamazumi is a Japanese word that literally means to stack up. Process tasks are individually represented in a stacked bar chart, these can be categorized as either Value Added, Non-Value Added or Waste.