NeuralNetwork/neuralnetwork/main.go

package main

import (
	"fmt"

	neuralnetwork "./neuralnetworkbase"
	teach "./teach"
)

func main() {
	sizes := []int{4, 8, 8, 3}
	nn := neuralnetwork.NewNeuralNetwork(sizes, 0.1, 481)

	// for i := 0; i < nn.Count; i++ {
	// 	if i > 0 {
	// 		fmt.Printf("Weights before:\n%v\n\n", mat.Formatted(nn.Weights[i], mat.Prefix(""), mat.Excerpt(0)))
	// 		fmt.Printf("Biases before:\n%v\n\n", mat.Formatted(nn.Biases[i], mat.Prefix(""), mat.Excerpt(0)))
	// 		fmt.Printf("Z before:\n%v\n\n", mat.Formatted(nn.Z[i], mat.Prefix(""), mat.Excerpt(0)))
	// 	}
	// 	fmt.Printf("A before:\n%v\n\n", mat.Formatted(nn.A[i], mat.Prefix(""), mat.Excerpt(0)))
	// }

	teacher := teach.NewTextDataReader("./iris.data")
	nn.Teach(teacher)

	// for i := 0; i < nn.Count; i++ {
	// 	if i > 0 {
	// 		fmt.Printf("Weights after:\n%v\n\n", mat.Formatted(nn.Weights[i], mat.Prefix(""), mat.Excerpt(0)))
	// 		fmt.Printf("Biases after:\n%v\n\n", mat.Formatted(nn.Biases[i], mat.Prefix(""), mat.Excerpt(0)))
	// 		fmt.Printf("Z after:\n%v\n\n", mat.Formatted(nn.Z[i], mat.Prefix(""), mat.Excerpt(0)))
	// 	}
	// 	fmt.Printf("A after:\n%v\n\n", mat.Formatted(nn.A[i], mat.Prefix(""), mat.Excerpt(0)))
	// }

	failCount := 0
	teacher.Reset()
	for teacher.Next() {
		index, _ := nn.Predict(teacher.GetData())
		expect := teacher.GetExpect()
		if expect.At(index, 0) != 1.0 {
			failCount++
			fmt.Printf("Fail: %v, %v\n\n", teacher.Index(), expect.At(index, 0))
		}
	}

	fmt.Printf("Fail count: %v\n\n", failCount)
}