func (this *Hypothesis) part_DiffH1Ys(i0, i1 int, Ts *TrainingSet, Ret *Matrix.Matrix, RetT *Matrix.Matrix, done chan<- bool) {
di := i1 - i0
if di >= THRESHOLD && runtime.NumGoroutine() < maxGoRoutines {
done2 := make(chan bool, THRESHOLD)
mi := i0 + di/2
go this.part_DiffH1Ys(i0, mi, Ts, Ret, RetT, done2)
go this.part_DiffH1Ys(mi, i1, Ts, Ret, RetT, done2)
<-done2
<-done2
} else {
for i := i0; i <= i1; i++ {
xi := Ts.Xs.GetRow(i)
Thi := Matrix.Product(xi, this.ThetaParameters.Transpose())
temp := this.H(Thi.GetValue(1, 1)) - Ts.Y.GetValue(1, i)
Ret.SetValue(i, 1, temp)
RetT.SetValue(1, i, temp)
}
}
done <- true
}