It's the number of matchings in the reference structure, which are correctly predicted. This factor can be used for evaluating the homology degree for the two structures.
It's the number of present matchings in the reference structure, which are not predicted.
It's the number of present matchings in the predicted structure, which are not in the reference structure.
As defined by Gardner and Giegerich
Gardner Paul P and Giegerich RobertA comprehensive comparison of comparative RNA structure prediction approaches.BMC Bioinformatics 5:140. 2004. doi:10.1186/1471-2105-5-140
This factor evaluate the capacity of the software to find stems.
This factor evaluate the capacity of the software to find true positive stems.
This factor evaluate simultaneously the sensibility and the selectivity. The MCC requires the sequence length, in order to calculate True Negative (TN).
TN corresponds to all possible matchings:
Position paired format
Bracket format
Positions paired with the name, the sequence and the structure of the RNA.
OR
Positions paired with only the RNA structure.
Bracket format with the name, the sequence and the structure or the RNA.