The datasets used in the paper:
  Rfold: An exact algorithm for computing local base pairing probabilities 
  Hisanori Kiryu; Taishin Kin; Kiyoshi Asai
  Bioinformatics 2007; doi: 10.1093/bioinformatics/btm591

RNA sequences are taken from Rfam7.0 database.
dataset1~4.stk correspond to Dataset1~4 in the above paper.
(see the paper for detailed descriptions of these datasets)
dataset1: 151 RNA sequences in Rfam7.0 database.
dataset2: e=100,300,500,and 1000 random bases are appended
	  to the both ends of the sequences of dataset1.
dataset3: RNA sequences of dataset1 and random sequences of length 1000
          are concatenated alternately.
dataset4: 10 random sequences of length 10 k bases.

Citation:
  Rfold: An exact algorithm for computing local base pairing probabilities 
  Hisanori Kiryu; Taishin Kin; Kiyoshi Asai
  Bioinformatics 2007; doi: 10.1093/bioinformatics/btm591	

Reference:
  Sam Griffiths-Jones, Alex Bateman, Mhairi Marshall, Ajay Khanna, and
  Sean R Eddy. Rfam: an RNA family database. 
  Nucleic Acids Res, 31(1):43941, 2003.