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Table 2 Examples of EDFs and CDFs

From: Incorporating rich background knowledge for gene named entity classification and recognition

Feature type

Examples

# of features

EDF I

Name = human serotonin transporter gene,

--

EDF II

Left1 = human, Left2 = human serotonin, Left3 = human serotonin transporter, Right1 = gene, Right2 = transporter gene, Right3 = serotonin transporter gene

--

CDF I (left)

X gene, X binding sites, X is involved in ...

300

CDF I (right)

human X, kinase ( X, the expression of X...

300

CDF II

t > 0.5, t > 0.25, t> 0, t>-0.25, t > -0.5, t < -0.75, t < -1, t < -1.25, t < -1.5, t < -1.75, t < -2

11

  1. In the examples of CDF II, t is the prediction score given by a SVM trained by local context words.