The Bias-Variance Tradeoff foundational

Why a model that is deliberately a little wrong can generalize better than one that fits the past too closely.

Why a model that is deliberately a little wrong can generalize better than one that fits the past too closely.

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References

Empirical properties of asset returns: stylized facts and statistical issues
R. Cont (2001) — Quantitative Finance
Ten Applications of Financial Machine Learning
Marcos López de Prado, Frank J. Fabozzi (2025) — The Journal of Portfolio Management
Improved estimation of the covariance matrix of stock returns with an application to portfolio selection
Olivier Ledoit, Michael Wolf (2003) — Journal of Empirical Finance
Pseudo-Mathematics and Financial Charlatanism: The Effects of Backtest Overfitting on Out-of-Sample Performance
David H. Bailey, Jonathan M. Borwein, Marcos López De Prado, Qiji Jim Zhu (2014) — Notices of the American Mathematical Society