The authors give worst-case logistic regression datasets on which every deterministic first-order method needs Ω(1/√ε) oracle queries for an ε-approximate solution.
Self-concordant analysis for logistic regression
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Some Worst-Case Datasets of Deterministic First-Order Methods for Solving Binary Logistic Regression
The authors give worst-case logistic regression datasets on which every deterministic first-order method needs Ω(1/√ε) oracle queries for an ε-approximate solution.