| Genomics 2007 | Genomics 2006 |
---|
 | document | passage | passage2 | document | passage |
---|
MAX | 0.2108 | 0.0963 | 0.0641 | 0.3529 | 0.0718 |
MIN | 0.1086 | 0.017 | 0.0094 | 0.2036 | 0.0192 |
Mean | 0.1778 | 0.0662 | 0.0346 | 0.3005 | 0.0487 |
SSD | 0.0291 | 0.0214 | 0.0136 | 0.0397 | 0.0147 |
 | (-16.37%) | (-32.33%) | (-39.17%) | (-13.20%) | (-30.18%) |
- We compute the max, min, mean and sample standard deviation (SSD) of baselines on the TREC Genomics 2007 and 2006 data sets: (1) the parameter settings of (k1, b) and the different indices effect the baseline results greatly, since there is a disparity between the max and the min values under all the measures; (2) the SSD values are calculated as a sample standard deviation of a discrete random variable; (3) the values in the parentheses are the relative rates of improvement over the means; (4) the SSD also reflects the influence of the different indices and parameter settings of (k1, b).