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We define a motif as an expression Z1 .Z2... Zn with sets Zl, Z2, . . . , Zn of strings in a specified family $ Omega $ called the type. This notion can capture the most of the motifs in PROSITE as we...ll as regular pattern languages. A greedy strategy is developed for finding such motifs with ambiguity just from positive and negaiive examples by exploiting the probabilistic argument. This paper concentrates on describing the idea of the greedy algorit hm with its underling theory. Its experiment a1 results on splicing sites and E. coli promoters are also presented.続きを見る
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