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On the LASSO and its Dual

Osborne, Michael R., Presnell, Brett, Turlach, Berwin A.·2000·Journal of Computational and Graphical Statistics

Abstract

Proposed by Tibshirani, the least absolute shrinkage and selection operator (LASSO) estimates a vector of regression coefficients by minimizing the residual sum of squares subject to a constraint on the l 1-norm of the coefficient vector. The LASSO estimator typically has one or more zero elements and thus shares characteristics of both shrinkage estimation and variable selection. In this article we treat the LASSO as a convex programming problem and derive its dual. Consideration of the primal and dual problems together leads to important new insights into the characteristics of the LASSO estimator and to an improved method for estimating its covariance matrix. Using these results we also develop an efficient algorithm for computing LASSO estimates which is usable even in cases where the number of regressors exceeds the number of observations. An S-Plus library based on this algorithm is available from StatLib.

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Metadata

Authors
Osborne, M. R., Presnell, B., & Turlach, B. A.
Venue
Journal of Computational and Graphical Statistics
Published
2000-06
Volume
9
Issue
2
Pages
319-337
ISSN
  • 1061-8600 (ISSN-L)
  • 1537-2715
OpenAlex
W1984568490
Cited by
696
References
19
FWCI
7.13
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: On the LASSO and its Dual. https://app.cochat.ai/papers/10.1080/10618600.2000.10474883
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Osborne, M. R., Presnell, B., & Turlach, B. A. (2000). On the LASSO and its Dual. Journal of Computational and Graphical Statistics. https://doi.org/10.1080/10618600.2000.10474883

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.