Ariadne is a FORR-based program that learns to travel through grid world mazes. Its premise is that agreement among varying heuristic viewpoints is a valid decision-making principle. Ariadne minimizes search, focusing instead upon reasonable rationales and multiple learning methods. Ariadne learns during travel, and demonstrates substantial, learned expertise after relatively little training. Work with Ariadne has pioneered the ability to do situation-based search in FORR. Susan L. Epstein

Key references

Epstein, S. L. 1998. Pragmatic Navigation: Reactivity, Heuristics, and Search. Artificial Intelligence, 100 (1-2): 275-322.

Epstein, S. L. (1997). Spatial Representation for Pragmatic Navigation. In Proceedings of the Conference on Spatial Information Theory - COSIT '97, 373-388. Laurel Highlands, PA: Springer Verlag.

Epstein, S. L. (1995). On Heuristic Reasoning, Reactivity, and Search. In Proceedings of the Fourteenth International Joint Conference on Artificial Intelligence, 454-461. Montreal: Morgan Kaufmann.


Araidne was the daughter of King Minos of Crete. It was she who told Theseus how to find his way through the labyrinth containing the kingdom's treasure.

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