Example #1
0
func (p *ActionPredictor) Train(iterations int, dataset DataSet, tokenizer *Tokenizer) {
	set := &mlearning.SimpleIterator{}
	for _, data := range dataset {
		tok := tokenizer.Tokenize(data.Sentence)
		set.FeatureSlice = append(set.FeatureSlice, &Meaning{
			Tokens: tok,
			Vars:   data.Vars,
		})
		set.ClassSlice = append(set.ClassSlice, mlearning.Class(data.Action))
	}

	for it := 0; it < iterations; it++ {
		set.Reset(true)
		c, n := p.Perceptron.Train(set)
		fmt.Printf("ActionPredictor iter %d: %d/%d=%.3f\n", it, c, n, float64(c)/float64(n)*100)
	}
}
Example #2
0
func (p *VarPredictor) dataToIterator(dataset DataSet) *mlearning.SimpleIterator {
	vs := &mlearning.SimpleIterator{}

	for _, data := range dataset {
		sen := data.CleanedSentence("[name]")
		tok := p.Tokenizer.Tokenize(sen)

		for i, t := range tok {
			if !strings.HasPrefix(t.Value, "[") {
				continue
			}

			name := strings.Trim(t.Value, "[]")
			vs.FeatureSlice = append(vs.FeatureSlice, &varFeature{
				Sentence: tok,
				Action:   data.Action,
				Pos:      i,
			})
			vs.ClassSlice = append(vs.ClassSlice, mlearning.Class(name))
		}
	}

	return vs
}
Example #3
0
func (p *ActionPredictor) ReinforceMeaning(m *Meaning, action string) {
	feats := m.Features()
	guess, _ := p.Perceptron.Predict(feats)
	p.Perceptron.Update(mlearning.Class(action), guess, feats)
}