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IxTeT [Laborie GhallabLaborie Ghallab1995] is well known for having been one of the first planners to reason about time and resource intensive domains. The version that participated in parts of the competition is a reimplementation of the original system described by Ghallab and Laruelle [Ghallab LaruelleGhallab Laruelle1994]. As mentioned above, IxTeT experienced a number of difficulties in the competition making it difficult to evaluate its performance. However, seen in the broader context of planning research and application IxTeT has made many important contributions to the development of temporal and resource-intensive planning approaches and, with its powerful plan representation language, is suited to certain applications for which the simplified plan representation used in the competition is inadequate.

Derek Long 2003-11-06