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Lasso with Latents: Efficient Estimation, Covariate Rescaling, and Computational-Statistical Gaps
Feb. 26, 2024, 5:43 a.m. | Jonathan Kelner, Frederic Koehler, Raghu Meka, Dhruv Rohatgi
cs.LG updates on arXiv.org arxiv.org
Abstract: It is well-known that the statistical performance of Lasso can suffer significantly when the covariates of interest have strong correlations. In particular, the prediction error of Lasso becomes much worse than computationally inefficient alternatives like Best Subset Selection. Due to a large conjectured computational-statistical tradeoff in the problem of sparse linear regression, it may be impossible to close this gap in general.
In this work, we propose a natural sparse linear regression setting where strong …
abstract arxiv computational correlations cs.cc cs.ds cs.lg error lasso math.st performance prediction statistical stat.ml stat.th type
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