The tenth Portuguese Conference on Artificial Intelligence, EPIA 2001 was held in Porto and continued the tradition of previous conferences in the series. It returned to the city in which the first conference took place, about 15 years ago. The conference was organized, as usual, under the auspices of the Portuguese Association for Artificial Intelligence (APPIA, http://www.appia.pt). EPIA maintained its international character and continued to provide a forum for p- senting and discussing researc h on different aspects of Artificial Intelligence. To promote motivated discussions among participants, this conference streng- ened the role of the thematic workshops. These were not just satellite events, but rather formed an integral part of the conference, with joint sessions when justified. This had the advantage that the work was presented to a motivated audience. This was the first time that EPIA embarked on this experience and so provided us with additional challenges.