摘要
We thank all discussants for their insightful comments on‘A selective overview of sparse sufficient dimension reduction’.We agree that sparse sufficient dimension reduction(sparse SDR)as a model-free variable(feature)screening and/or selection approach,deserves an important role in many scientific studies.We hope that our comprehensive overview of the important developments in the field of sparse SDR,would stimulate further developments of newmethods to cast new light on many intriguing problems.
