Today's information technology is rapidly moving small computerised consumer devices and hi-tech personal appliances from the desks of research labs into sales shelves and our daily life. Various platforms from low performance PDA, embedded computers in cameras, cars, or mobile phones, up to high performance wearable computers will become essential tools in many situations for private and professional use. These systems require new interaction metaphors and methods of control. Well-known interaction devices, such as mouse and keyboard are not necessarily available, rendering user interfaces that rely on them inappropriate. Other resources such as power or networking bandwidth may be limited or unreliable depending on time and location. Moreover, the physical environment and context are changing rapidly and must be taken into account appropriately. In the future the focus will shift from single users, using single services on single artifacts towards groups of users collaborating using a combination of different services in physical spaces equipped with personal as well as public dynamically configured artifacts (ubiquitous computing or ambient technology).

Therefore, the main challenge for the success of mobile systems is the design of smart user interfaces and software that allows ubiquitous and easy access to personal information and that is flexible enough to handle changes in user context and availability of resources. Artificial intelligence has investigated the problems of making user interfaces smart and cooperative for many years and is attacking the challenges of explicitly dealing with limited resources lately. AI methods provide a range of solutions for those problems and currently seem to be one of the most promising tools for building location and situation aware mobile systems that support users at their best and behave cooperatively in unobtrusive ways.

AIMS 2003 will be the fourth workshop in a row as a successor of AIMS 2000 (with ECAI 2000, Berlin), AIMS 2001 (with IJCAI '01, Seattle), AIMS 2002 (with ECAI '02) organised by the same persons and institutions.  In order to foster the investigation of AI methods in ubiquitous computing scenarios AIMS 2003 will be held in conjunction with Ubicomp 2003. A combination that we believe will be very fruitful for both research areas.