power map; power structure; power relationships
Refers to a diagram, chart, or conceptual map showing the distribution of power among groups, factions, or individuals, often in politics, business, or organizations.
The power map changed dramatically after the election.
Analyze the power structure of the industry.
組織図 is an organizational chart showing formal hierarchy, whereas 勢力図 focuses on actual power dynamics, which may differ from the official structure.
Compound of 勢力 (power, influence) and 図 (diagram, chart). The term is a straightforward modern coinage without a complex historical derivation.