Optimal Column Subset Selection by A-Star Search. - Hiromasa Arai; Crystal Maung; Haim Schweitzer (AAAI, 2015)

Unsupervised Feature Selection by Heuristic Search with Provable Bounds on Suboptimality. - Hiromasa Arai; Crystal Maung; Ke Xu; Haim Schweitzer (AAAI, 2016)

Weighted A* Algorithms for Unsupervised Feature Selection with Provable Bounds on Suboptimality. - Hiromasa Arai; Ke Xu; Crystal Maung; Haim Schweitzer (AAAI, 2016)

Two-Stage Feature Selection with Unsupervised Second Stage. - Ke Xu; Crystal Maung; Hiromasa Arai; Haim Schweitzer (Int. J. Artif. Intell. Tools, 2018)