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Erschienen in:
2010 | OriginalPaper | Buchkapitel
Automated Discovery of Search-Extension Features
verfasst von : Pálmi Skowronski, Yngvi Björnsson, Mark H. M. Winands
Erschienen in: Advances in Computer Games
Verlag: Springer Berlin Heidelberg
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One of the main challenges with selective search extensions is designing effective move categories (features). Usually, it is a manual trial-and-error task, which requires both intuition and expert human knowledge. Automating this task potentially enables the discovery of both more complex and more effective move categories. The current work introduces
Gradual Focus
, an algorithm for automatically discovering interesting move categories for selective search extensions. The algorithm iteratively creates new more refined move categories by combining features from an atomic feature set. Empirical data is presented for the game Breakthrough showing that Gradual Focus looks at a number of combinations that is two orders of magnitude fewer than a brute-force method does, while preserving adequate precision and recall.