From February 28 to March 2, 2025, the 19th International Conference and Workshop on Algorithms and Computation (WALCOM 2025) was successfully convened in Chengdu, China, under the auspices of the Algorithms and Logic Lab. The conference was chaired by Bakh Khoussainov as the General Chair and Mingyu Xiao as the Program Committee (PC) Chair. The conference garnered 71 submissions from 23 countries and regions globally. Following a rigorous peer-review process, 26 papers were accepted for presentation, reflecting an acceptance rate of 37%. This not only underscored the international stature of WALCOM but also affirmed its commitment to maintaining stringent academic standards.

The conference was graced by three eminent invited speakers: Professor Venkatesan Guruswami from the University of California, Berkeley, Professor Ken-ichi Kawarabayashi from the National Institute of Informatics in Japan, and Professor Daniel Lokshtanov from the University of California, Santa Barbara. Their keynote addresses on efficient algorithms for constraint satisfaction, three-edge-coloring of cubic graphs on surfaces of low genus, and structure and quasi-polynomial time algorithms provided profound insights and highlighted cutting-edge developments in the field.

Throughout the conference, scholars from across the globe engaged in robust discussions on a diverse array of topics, including graph theory, algorithms and approximation, game theory and social choice, and exact and parameterized algorithms. The program was enriched with social activities such as the opening ceremony, coffee breaks, and a banquet, fostering an environment conducive to networking and collaborative endeavors.

Chengdu, the host city, left an indelible impression on attendees with its rich cultural heritage and distinctive urban allure. The organizing committee recommended several notable attractions, including the Chengdu Research Base of Giant Panda Breeding, Jinli Ancient Street, Wenshu Monastery, and People’s Park, which collectively showcased the city’s natural splendor, historical depth, and leisurely lifestyle.

The Algorithms and Logic Lab extends its heartfelt gratitude to all participants for their invaluable contributions and to the National Natural Science Foundation of China and the CCF Theoretical Computer Science for their financial support. Looking ahead, the lab is poised to host two prestigious international conferences: COCOON 2025 and the Asian Logic Colloquium (ALC) 2027. These initiatives underscore our unwavering commitment to fostering global academic exchanges and advancing the frontiers of theoretical computer science research.