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. 2009 May 27;25(12):i365–i373. doi: 10.1093/bioinformatics/btp212

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© 2009 The Author(s)

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 4. — McCaskill's algorithm: recursion for Q_i,j, the partition function for the subsequence [i, j]. Above, Q^b_i,j is the partition function for the subsequence [i, j] assuming i and j are base paired, and Q^bz_i,j is the partition function for the subsequence [i, j] assuming there is at least one arc in the region.