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Table 5 Cross-corpus results measured with F-score and thresholds based on the distribution of test set. F-score results for cross-corpus testing with the thresholds chosen according to the positive/negative distribution of the test set. Rows correspond to training corpora and columns to test corpora. Δ denote the difference between the F-score result and the result achieved with the optimal threshold.

From: All-paths graph kernel for protein-protein interaction extraction with evaluation of cross-corpus learning

  AImed Δ BioInfer Δ HPRD50 Δ IEPA Δ LLL Δ
AImed - - 44.7% 2.4% 65.6% 3.4% 63.9% 3.5% 70.1% 4.4%
BioInfer 42.6% 4.6% - - 62.0% 1.9% 66.9% 1.1% 75.6% 2.4%
HPRD50 39.1% 3.1% 40.0% 2.5% - - 63.3% 1.8% 58.5% 9.4%
IEPA 33.5% 5.6% 48.4% 3.3% 66.3% 1.2% - - 77.4% 0.2%
LLL 26.5% 6.8% 38.7% 3.8% 54.0% 5.8% 63.0% 1.9% - -
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