Figure 4From: Stable stem enabled Shannon entropies distinguish non-coding RNAs from random backgroundsIllustration of the application of the generic production rule. Illustration of the application of the generic production rule S → aRbT that produces a base pair between positions i and j for the query sequence x, provided that the start non-terminal S0 derives x1x2 ... x i -1Sx k +1 ... x n . Note that given i and j, the position of k can vary.Back to article page