Table 8 Set of aspects that produced the best recall for P and I
From: Combination of conditional random field with a rule based method in the extraction of PICO elements
Aspect | Best choice of aspect | Other assessed choices |
|---|---|---|
Gaussian prior | 10 | 0.1, 1, 10, 100 |
Model training-proportion | (100, 0%) | (50, 50%), (80, 20%), (90, 10%) |
Training information layout | Standard | Information redundancy |
Testing information layout | Redundant information | Standard |
Mixing different features | All features | Part of them |
Type of feature values | Categorical | Binary, natural |
Grouping structural features | Yes | No |