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- W4287757625 abstract "We describe a series of algorithms that efficiently implement Gaussian model-X knockoffs to control the false discovery rate on large scale feature selection problems. Identifying the knockoff distribution requires solving a large scale semidefinite program for which we derive several efficient methods. One handles generic covariance matrices, has a complexity scaling as $O(p^3)$ where $p$ is the ambient dimension, while another assumes a rank $k$ factor model on the covariance matrix to reduce this complexity bound to $O(pk^2)$. We also derive efficient procedures to both estimate factor models and sample knockoff covariates with complexity linear in the dimension. We test our methods on problems with $p$ as large as $500,000$." @default.
- W4287757625 created "2022-07-26" @default.
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- W4287757625 date "2020-06-15" @default.
- W4287757625 modified "2023-09-24" @default.
- W4287757625 title "FANOK: Knockoffs in Linear Time" @default.
- W4287757625 doi "https://doi.org/10.48550/arxiv.2006.08790" @default.
- W4287757625 hasPublicationYear "2020" @default.
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