Figure 2

Score distribution between the real hits and the false hits when using different algorithms for the family RF00661. The figure shows the comparison on score distribution of real hits (i.e. real members) and false hits for the family RF00661 between different algorithms. It shows that the local structural alignment algorithm with affine gap penalty can increase the difference between the scores of real hits and the scores of false hits compared with the other methods, and so it has a higher distinguishing power to identify the real ncRNA members along the long genome sequence.