Table 1.
Performance of keyword search using unigrams, bigrams, and a combination of both
Precision | Recall | F1 score | |
---|---|---|---|
Unigrams | 0.043 (±0.02) | 0.927 (±0.04) | 0.081 (±0.03) |
Bigrams | 0.429 (±0.06) | 0.635 (±0.04) | 0.512 (±0.05) |
Unigrams + bigrams | 0.047 (±0.00) | 0.895 (±0.04) | 0.089 (±0.00) |
Note: Results are reported as mean (±95% confidence intervals) obtained from 10-fold cross-validation on the training set