示例#1
0
func (this *TrainingSet) Variance_sum(i0, i1 int, mean *Matrix.Matrix, res **Matrix.Matrix, sustract *Matrix.Matrix, done chan<- bool) {
	di := i1 - i0

	if di >= THRESHOLD {
		mi := i0 + di/2
		done2 := make(chan bool, THRESHOLD)

		res1 := Matrix.NullMatrixP(1, this.Xs.GetNColumns())
		res2 := Matrix.NullMatrixP(1, this.Xs.GetNColumns())

		go this.Variance_sum(i0, mi, mean, &res1, sustract, done2)
		go this.Variance_sum(mi, i1, mean, &res1, sustract, done2)

		<-done2
		<-done2

		SP, _ := Matrix.Sum(res1, res2)
		*res = SP

	} else {
		for i := i0; i <= i1; i++ {
			xsi := this.Xs.GetRow(i)
			Sustract, _ := Matrix.Sustract(mean, xsi)
			Square := Matrix.DotMultiplication(Sustract, Sustract)

			sustract.SetRow(i, Sustract)

			SP, _ := Matrix.Sum(Square, *res)
			*res = SP
		}
	}
	done <- true
}
示例#2
0
文件: DFT.go 项目: eddytrex/AIgo
func FFT_ct2(this *Matrix.Matrix, N, skip int, tf *[]complex128) *Matrix.Matrix {

	Xr := Matrix.NullMatrixP(N, this.GetNColumns())
	Scratch := Matrix.NullMatrixP(N, this.GetNColumns())

	var E, D, Xp, Xstart *Matrix.Matrix
	var evenIteration bool

	if N%2 == 0 {
		evenIteration = true
	} else {
		evenIteration = false
	}

	if N == 1 {
		Xr.SetRow(1, this.GetReferenceRow(1))
	}

	E = this

	for n := 1; n < N; n *= 2 {

		if evenIteration {
			Xstart = Scratch
		} else {
			Xstart = Xr
		}

		skip := N / (2 * n)
		Xp = Xstart

		for k := 0; k != n; k++ {
			for m := 0; m != skip; m++ {
				D = E.MatrixWithoutFirstRows(skip)
				D.ScalarRow(1, (*tf)[skip*k])

				sr, rr, _ := Matrix.Sum_Sustract(E.GetReferenceRow(1), D.GetReferenceRow(1))

				Xp.SetRow(1, sr)
				Xp.SetRow(N/2+1, rr)

				Xp = Xp.MatrixWithoutFirstRows(1)
				E = E.MatrixWithoutFirstRows(1)
			}
			E = E.MatrixWithoutFirstRows(skip)
		}
		E = Xstart
		evenIteration = !evenIteration
	}
	return Scratch
}
示例#3
0
文件: DFT.go 项目: eddytrex/AIgo
func FFT_aux(this, xr, RowTemp *Matrix.Matrix, N, skip int, tf *[]complex128) {

	if N == 1 {
		xr.SetRow(1, this.GetReferenceRow(1))
		return
	}

	FFT_aux(this, xr, RowTemp, N/2, skip*2, tf)
	FFT_aux(this.MatrixWithoutFirstRows(skip), xr.MatrixWithoutFirstRows(N/2), RowTemp, N/2, skip*2, tf)

	for k := 0; k < N/2; k++ {

		xr.ScalarRowIntoRowMatrix(RowTemp, k+1+N/2, (*tf)[k*skip])

		sr, rr, _ := Matrix.Sum_Sustract(xr.GetReferenceRow(k+1), RowTemp)

		xr.SetRow(k+1, sr)
		xr.SetRow(k+1+N/2, rr)

	}
}
示例#4
0
文件: DFT.go 项目: eddytrex/AIgo
func FFT_ct3(this *Matrix.Matrix, N, skip int, tf *[]complex128) *Matrix.Matrix {

	Xr := Matrix.NullMatrixP(N, this.GetNColumns())
	Scratch := Matrix.NullMatrixP(N, this.GetNColumns())

	var E, D, Xp, Xstart *Matrix.Matrix
	var evenIteration bool

	if N%2 == 0 {
		evenIteration = true
	} else {
		evenIteration = false
	}

	if N == 1 {
		Xr.SetRow(1, this.GetReferenceRow(1))
	}

	E = this

	for n := 1; n < N; n *= 2 {

		if evenIteration {
			Xstart = Scratch
		} else {
			Xstart = Xr
		}

		skip := N / (2 * n)
		Xp = Xstart

		for k := 0; k != n; k++ {

			var Aux = func(m0, m1 int, Xp, E, D *Matrix.Matrix) {

				println("-", m0)
				Xp = Xp.MatrixWithoutFirstRows(m0)
				E = E.MatrixWithoutFirstRows(m0)
				//D = E.MatrixWithoutFirstRows(skip)

				for m := m0; m < m1; m++ {
					D = E.MatrixWithoutFirstRows(skip)
					D.ScalarRow(1, (*tf)[skip*k])

					sr, rr, _ := Matrix.Sum_Sustract(E.GetReferenceRow(1), D.GetReferenceRow(1))

					Xp.SetRow(1, sr)
					Xp.SetRow(N/2+1, rr)

					Xp = Xp.MatrixWithoutFirstRows(1)

					println("E", E.ToString())
					E = E.MatrixWithoutFirstRows(1)

				}

			}

			mm := skip / 2
			m0 := 0
			//m1 := skip

			go Aux(m0, mm, Xp, E, D)
			//println("->E", E.ToString(), ">XP", Xp.ToString())
			//go Aux(mm, m1, Xp, E, D)

			//for m := 0; m != skip; m++ {
			//	D = E.MatrixWithoutFirstRows(skip)
			//	D.ScalarRow(1, (*tf)[skip*k])

			//	sr, rr, _ := Matrix.Sum_Sustract(E.GetReferenceRow(1), D.GetReferenceRow(1))

			//	Xp.SetRow(1, sr)
			//	Xp.SetRow(N/2+1, rr)

			//	Xp = Xp.MatrixWithoutFirstRows(1)
			//	E = E.MatrixWithoutFirstRows(1)
			//}
			E = E.MatrixWithoutFirstRows(skip)

		}
		E = Xstart
		evenIteration = !evenIteration
	}
	return Scratch
}