Overview
Christine De Mol is an applied mathematician (Université Libre de Bruxelles / ECARES), working on inverse problems, sparse and ℓ1 regularization, and their applications in signal processing and econometric forecasting.
Key Contributions / Features
- Iterative soft-thresholding for linear inverse problems with sparsity constraints (Daubechies–Defrise–De Mol 2004).
- Sparse and stable Markowitz portfolios (Brodie et al. 2009): ℓ1-penalized portfolio selection.
- Bayesian shrinkage vs principal components (De Mol-Giannone-Reichlin 2008): forecasting with many predictors via regularization — ridge ≈ principal components, lasso for sparsity (Dynamic Factor Model).
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