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Lead–lag effect : ウィキペディア英語版 | Lead–lag effect
A lead–lag effect, especially in economics, describes the situation where one (leading) variable is cross-correlated with the values of another (lagging) variable at later times. For example, economists have found that in some circumstances there is a lead-lag effect between large-capitalization and small-capitalization stock-portfolio prices.〔Andrew W. Lo and A. Craig MacKinlay, "When are contrarian profits due to stock market overreaction," ''Review of Financial Studies'' 3 (2), 175-205 (1990).〕 (A loosely related concept is that of lead-lag compensators in control theory, but this is not generally referred to specifically as a "lead-lag effect.") ==References==
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