func (m Meaning) Features() []mlearning.Feature {
fs := make([]mlearning.Feature, 0)
fs = append(fs, "bias")
// if m.Predicate != "" {
// fs = append(fs, mlearning.Feature("predicate="+m.Predicate))
// }
// if m.Object != "" {
// fs = append(fs, mlearning.Feature("object="+m.Object))
// }
for i, t := range m.Tokens {
if i == 0 {
fs = append(fs, mlearning.Feature("first="+t.Lemma))
}
if i == 1 {
fs = append(fs, mlearning.Feature("second="+t.Lemma))
}
fs = append(fs, mlearning.Feature("word="+t.Lemma))
}
for _, v := range m.Vars {
fs = append(fs, mlearning.Feature("var="+v.Name))
}
return fs
}
func (f *varFeature) Features() []mlearning.Feature {
fs := map[string]struct{}{}
addFeat(fs, "bias")
if f.Pos > 0 {
addFeat(fs, "1 word", f.Sentence[0].Lemma)
addFeat(fs, "i-1 word", f.Sentence[f.Pos-1].Lemma)
}
if f.Pos > 1 {
addFeat(fs, "2 word", f.Sentence[1].Lemma)
addFeat(fs, "i-2 word", f.Sentence[f.Pos-2].Lemma)
}
if f.Action != "" {
addFeat(fs, "action", f.Action)
parts := strings.SplitN(f.Action, "/", 4)
for i := 0; i < len(parts); i++ {
addFeat(fs, strconv.Itoa(i)+" action", strings.Join(parts[0:i], "/"))
}
}
fslice := make([]mlearning.Feature, 0, len(fs))
for f := range fs {
fslice = append(fslice, mlearning.Feature(f))
}
return fslice
}