Some computer science issues in ubiquitous computing
ACM SIGMOBILE Mobile Computing and Communications Review - Special issue dedicated to Mark Weiser
The invisible future
Distributed and Parallel Databases
Using Case-Based Reasoning to Focus Model-Based Diagnostic Problem Solving
EWCBR '93 Selected papers from the First European Workshop on Topics in Case-Based Reasoning
Attack Plan Recognition and Prediction Using Causal Networks
ACSAC '04 Proceedings of the 20th Annual Computer Security Applications Conference
Human-centered computing: a multimedia perspective
MULTIMEDIA '06 Proceedings of the 14th annual ACM international conference on Multimedia
An Ambient Agent Model Exploiting Workflow-Based Reasoning to Recognize Task Progress
AmI '08 Proceedings of the European Conference on Ambient Intelligence
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To support human functioning, ambient intelligent agents require knowledge about the tasks executed by the human. This knowledge includes design-time information like: (i) the goal of a task and (ii) the alternative ways for a human to achieve that goal, as well as run-time information such as the choices made by a human during task execution. In order to provide effective support, the agent must know exactly what steps the human is following. However, if not all steps along the path can be observed, it is possible that the agent cannot uniquely derive which path the human is following. Furthermore, in order to provide timely support, the agent must observe, reason, conclude and support within a limited period of time. To deal with these problems, this paper presents a focusing mechanism to guide and accelerate the reasoning process in concluding the path most likely selected by the human. This mechanism is based upon knowledge about the human and the workflow to perform the task. In order to come to such an approach, a new workflow representation is introduced. The approach is evaluated by means of an extensive case study.