Table 1. Minimizers employed as solvers in scikit-learn’s logistic regression algorithm.

	$L_1$	$L_2$	ElasticNet	No regularization
LBFGS1		✓		✓
LIBLINEAR (Fan et al., 2008)	✓	✓
Newton-CG1		✓		✓
Newton-Cholesky1		✓		✓
SAG (Schmidt, Roux & Bach, 2017)		✓		✓
SAGA (Defazio, Bach & Lacoste-Julien, 2014)	✓	✓	✓	✓

Note:

¹See Nocedal & Wright (2006) for further information on these common optimization approaches.