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Table 6 Statistical analysis of unanswerable factoid questions

From: External features enriched model for biomedical question answering

Title Batch 1 (%) Batch 2 (%) Batch 3 (%) Batch 4 (%) Batch 5 (%) All (%)
6b Weakly unanswerable ratio 9.7 4.8 9.4 18.2 18.2 13.0
Strongly unanswerable ratio 12.9 9.5 12.5 9.1 15.9 12.4
All unanswerable ratio 22.6 14.3 21.9 27.3 34.1 25.4
7b Weakly unanswerable ratio 17.9 16.0 10.3 5.9 17.1 13.6
Strongly unanswerable ratio 12.8 4.0 13.8 5.9 5.7 8.6
All unanswerable ratio 30.7 20.0 24.1 11.8 22.8 22.2
8b Weakly unanswerable ratio 3.1 8.0 17.9 2.9 9.4 7.9
Strongly unanswerable ratio 18.8 16.0 14.3 14.7 6.2 13.8
All unanswerable ratio 21.9 24.0 32.2 17.6 15.6 21.7
  1. Bold values represent the overall percentage of unanswerable questions