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Table 2 Statistics comparing BioCreative II gene normalization task (human) with BioCreative I tasks (mouse, fly, and yeast).

From: Overview of BioCreative II gene normalization

  Number of unique IDs Average synonym length in words Average synonyms per identifier Average identifiers per synonym (ambiguity) BioCreative maximum recall @ precision BioCreative maximum F-measure
Human 32,975 2.17 5.55 1.12 0.88 @ 0.50 0.81
Mouse 52,494 2.77 2.48 1.02 0.90 @ 0.43 0.79
Yeast 7,928 1.00 1.86 1.01 0.96 @ 0.65 0.92
Fly 27,749 1.47 2.94 1.09 0.84 @ 0.73 0.82
  1. Statistics on synonyms are based on lexical resources provided by the task organizers.