In Memoriam

Institute of Statistical Science, Academia Sinica, mourns the passing of Academician Ching-Shui Cheng with profound sadness.

Academician Cheng was an internationally renowned statistician whose pioneering contributions to mathematical statistics and experimental design have had a lasting impact on the development of modern statistics. Combining deep theoretical insight with broad scientific influence, his work helped shape the foundations of contemporary experimental design and established him as one of the most respected leaders in the global statistical community.

For many years, Academician Cheng served on the faculty of the Department of Statistics at the University of California, Berkeley, where he mentored generations of outstanding students who have gone on to make important contributions around the world. He was admired and respected by students, colleagues, and scholars alike for his rigorous scholarship, intellectual leadership, and exemplary character.

Academician Cheng maintained a deep and enduring connection with the Institute of Statistical Science, Academia Sinica. During his two terms as Director, he led the Institute with remarkable vision, wisdom, and dedication. He actively promoted international exchange and scholarly collaboration, including the initiation of the ISSAS–ISI–ISM Joint Conference, which brought together leading statistical institutions across Asia and strengthened global academic partnerships. His leadership played a pivotal role in establishing the Institute’s strong academic foundation and international standing.

He also played a pivotal role in establishing the Data Science Degree Program jointly offered by Academia Sinica and National Taiwan University, creating an important milestone in the education and training of future generations of statisticians and data scientists in Taiwan. Even after his retirement, Academician Cheng remained deeply committed to the Institute. As a member of the Institute’s Academic Advisory Committee, he continued to provide invaluable guidance and support, serving as a trusted mentor and respected senior scholar.

He also served as Editor-in-Chief of Statistica Sinica and held numerous important academic leadership positions. Through his tireless efforts, he made enduring contributions to the development of the statistical community and to enhancing the international visibility and impact of Taiwanese statistics. As President of the Chinese Institute of Probability and Statistics, he further advanced statistical research and education in Taiwan through his dedicated leadership and service.

Beyond his remarkable academic achievements, Academician Cheng was a beloved professor, mentor, and friend. He was known for his humility, sincerity, thoughtfulness, and generosity toward younger scholars. Those who had the privilege of learning from him, working with him, or seeking his advice were invariably inspired by his passion for knowledge, dedication to truth, and unwavering commitment to nurturing future generations.

Academician Cheng’s life spanned and shaped an important era in the development of statistical science. His influence extended far beyond Taiwan, reaching the international statistical community through his scholarship, leadership, and mentorship. Although he is no longer with us, he leaves behind not only a rich and enduring body of scientific contributions, but also a legacy of intellectual curiosity, devotion to education, and a model of academic excellence and personal integrity that will continue to inspire future generations.

We will forever remember the wisdom, kindness, and warmth that Academician Cheng brought to the Institute of Statistical Science, the statistical community, and all those whose lives he touched. We extend our deepest condolences and highest respect in his memory.