The 11th International Conference on Applications of Prolog was held in Tokyo September 14-16, 1998 after a tight schedule of three days, 11 sessions and workshops, 41 presented papers, 8 exhibiting companies and organizations, John Fox' invited talk and an unknown number of individual discussions all in a one-track conference.

Invited talk of Prof. John Fox on "Lessons from Medicine" demonstrated how and where intelligent diagnostic assistants will be deployed in future medicine.

Sessions on information mediation, parallel programming system KLIC, optimization and simulation with constraints, constraint programming, medical systems, legal expert systems, industrial information systems were received well and sparked intensive discussions.

Proceedings of INAP98 are available at US\$70.