Sobolev seminorm of quadratic functions with applications to derivative-free optimization. - Zaikun Zhang (Math. Program., 2014)

Direct Search Based on Probabilistic Descent. - Serge Gratton; Clément W. Royer; Luís Nunes Vicente; Zaikun Zhang (SIAM J. Optim., 2015)

On the optimal order of worst case complexity of direct search. - Mahdi Dodangeh; Luís Nunes Vicente; Zaikun Zhang (Optim. Lett., 2016)

A Smoothing Direct Search Method for Monte Carlo-Based Bound Constrained Composite Nonsmooth Optimization. - Xiaojun Chen 001; C. T. Kelley; Fengmin Xu; Zaikun Zhang (SIAM J. Sci. Comput., 2018)

Direct search based on probabilistic feasible descent for bound and linearly constrained problems. - Serge Gratton; Clément W. Royer; Luís Nunes Vicente; Zaikun Zhang (Comput. Optim. Appl., 2019)

Tight Error Bounds for Nonnegative Orthogonality Constraints and Exact Penalties. - Xiaojun Chen 001; Yifan He; Zaikun Zhang (CoRR, 2022)

HiMOSS: A Novel High-dimensional Multi-objective Optimization Method via Adaptive Gradient-Based Subspace Sampling for Analog Circuit Sizing. - Tianchen Gu; Ruiyu Lyu; Zhaori Bi; Changhao Yan; Fan Yang 001; Dian Zhou; Tao Cui; Xin Liu 001; Zaikun Zhang; Xuan Zeng 001 (DAC, 2024)

An optimal interpolation set for model-based derivative-free optimization methods. - Tom M. Ragonneau; Zaikun Zhang (Optim. Methods Softw., 2024)

BBGP-sDFO: Batch Bayesian and Gaussian Process Enhanced Subspace Derivative Free Optimization for High-Dimensional Analog Circuit Synthesis. - Tianchen Gu; Wangzhen Li; Aidong Zhao; Zhaori Bi; Xudong Li; Fan Yang 001; Changhao Yan; Wenchuang Walter Hu; Dian Zhou; Tao Cui; Xin Liu 001; Zaikun Zhang; et al. (IEEE Trans. Comput. Aided Des. Integr. Circuits Syst., 2024)

PDFO: a cross-platform package for Powell's derivative-free optimization solvers. - Tom M. Ragonneau; Zaikun Zhang (Math. Program. Comput., 2024)

Tight Error Bounds for the Sign-Constrained Stiefel Manifold. - Xiaojun Chen 001; Yifan He; Zaikun Zhang (SIAM J. Optim., 2025)

A Graph-Partitioning Based Continuous Optimization Approach to Semi-supervised Clustering Problems. - Wei Liu 044; Xin Liu 001; Michael K. Ng 001; Zaikun Zhang (CoRR, 2025)