Jan Harold Alcantara

Postdoctoral Researcher
RIKEN Center for Advanced Intelligence Project
janharold.alcantara@riken.jp jan.harold.alcantara@gmail.com

About Me

I am a postdoctoral researcher at the Center for Advanced Intelligence Project (AIP), RIKEN, Japan in the Continuous Optimization Team led by Prof. Akiko Takeda. Before my current position, I worked with Prof. Ching-pei Lee as a postdoctoral scholar at Academia Sinica. Prior to this, I held a postdoctoral fellowship at the Department of Mathematics, National Taiwan Normal University, where I also completed my Ph.D. in Mathematics under the guidance of Prof. Jein-Shan Chen. For a more detailed information about my background, please refer to my CV.

Research Interests

I am interested in the analysis and development of solution methods for nonconvex problems that arise from

My recent works are concerned with problems inspired by machine learning applications, including best subset selection, sparse regression, compressive sensing, and hyperparameter learning. In general, I work on developing practical algorithms for nonconvex optimization to better handle large-scale problems, which is done either through the formulation of new algorithms or by novel acceleration techniques for existing ones.

I am also interested in studying the global convergence of classical projection algorithms for feasibility problems, which are not fully understood for nonconvex settings. I am likewise involved with designing new algorithms for variational inequalities and complementarity problems, such as dynamic systems approaches, smoothing techniques, and more recently, projection methods for their feasibility reformulations.

Selected Publications


Selected Talks