While significant, the improvement from the Baseline to LexFilter is quite small, which is due to the Baseline's own rather strong illegal analyses filtering heuristic.
unlike the oracle segmentation case, here the semisupervised lexical probabilities (LexProbs) have a major effect on the parser performance (∼ 69 to ∼ 73.5 F-score), an overall improvement of ∼ 6.6 F-points over the Baseline, which is the previous state-of-the art for this joint task.