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. CAPM, Mean-Variance Portfolio Optimization, Constrained Optimization, Fama-French, Value-Size Portfolios, Dynamical …
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of the problem of choosing an aggregative model optimally for modes of aggregation specified in advance leads to a … formula for the aggregation bias based on the mean-square forecast error. Taking this formula as objective function one would … wish to choose a grouping that minimizes aggregation bias. Unfortunately this results in an optimization problem of a high …
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