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People
Relating to public figures or personalities, celebrities or otherwise, who have made significant progress in their particular professional field, or who have helped or influenced wider society to an outstanding degree.
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herfindahl hirschman 索引
Economy; Economics
一個可能的壟斷的警告信號。反壟斷經濟學家經常通過測量的程度,其輸出是集中在少數幾家公司衡量工業的競爭力。,其中一項措施是 Herfindahl Hirschman 索引。來計算它,在業界採取的每個公司的市場份額,廣場,然後將它們添加到所有最多。如果有 100 家大小相等公司 (市場與靠近完全競爭),指數為 100。如果有四個大小相等公司 (可能寡頭壟斷) ...