odbtest/test/testnn.go

package main

import (
	"fmt"
	"git.wecise.com/wecise/common/alg/nn"
	lg "log"
	"math"
	"os"
	"path/filepath"
	"strings"
)

func main(){
	pwd, err := os.Getwd()
	if err != nil {
		lg.Fatal(err)
	}
	outFile,_ := os.OpenFile(filepath.Join(pwd, "sin.out"), os.O_CREATE | os.O_RDWR, 0777)
	defer outFile.Close()

	nn := gonn.DefaultNetwork(1, 10, 1, true)
	trainInputs := make([][]float64, 100)
	trainTargets := make([][]float64, 100)

	for i := 0; i < len(trainInputs); i++ {
		trainInputs[i] = []float64{float64(i) / 20.0}
		trainTargets[i] = []float64{math.Sin(trainInputs[i][0])}
	}

	trace, err := nn.Train(trainInputs, trainTargets, 1000)
	if err != nil {
		lg.Fatal(err)
	}
	fmt.Print(strings.TrimSpace(trace))

	for i := 0; i < len(trainInputs); i++ {
		x := []float64{float64(i) / 23.0}
		fmt.Fprintln(outFile, x[0], nn.Forward(x)[0])
	}
	//gonn.DumpNN(filepath.Join(pwd, "nn.dump"), nn)
}