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Figure 3 | Algorithms for Molecular Biology

Figure 3

From: On the combinatorics of sparsification

Figure 3

(A) Sparsification of secondary structure folding. Suppose the optimal solution Li,j is obtained from the optimal solutions Li,k, Lk + 1,q and Lq + 1,j. Based on the recursions of the secondary structures, Li,kand Lk + 1,q produce an optimal solution of Li,q. Similarly, Lk + 1,q and Lq + 1,j produce an optimal solution of Lk + 1,j. Now, in order to obtain an optimal solution of Li,j it is sufficient to consider either the grouping Li,q and Lq + 1,j or Li,k and Lk + 1,j. (B) General idea of sparsification: L v is alternatively realized via L v 1 and L v 2 , or L v 1 and L v 3 . Thus it is sufficient to only consider one of the computation paths.

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