Method swap_index

svm.go:360–377

(i, j int)

}

func (this *Solver) swap_index(i, j int) {
	// todo
	this.Q.swap_index(i, j)
	//do {byte _=y[i]; y[i]=y[j]; y[j]=_;} while(false);
	this.y[i], this.y[j] = this.y[j], this.y[i]
	//do {float64 _=G[i]; G[i]=G[j]; G[j]=_;} while(false);
	this.G[i], this.G[j] = this.G[j], this.G[i]
	//do {byte _=alpha_status[i]; alpha_status[i]=alpha_status[j]; alpha_status[j]=_;} while(false);
	this.alpha_status[i], this.alpha_status[j] = this.alpha_status[j], this.alpha_status[i]
	//do {float64 _=alpha[i]; alpha[i]=alpha[j]; alpha[j]=_;} while(false);
	this.alpha[i], this.alpha[j] = this.alpha[j], this.alpha[i]
	//do {float64 _=p[i]; p[i]=p[j]; p[j]=_;} while(false);
	this.p[i], this.p[j] = this.p[j], this.p[i]
	//do {int _=active_set[i]; active_set[i]=active_set[j]; active_set[j]=_;} while(false);
	this.active_set[i], this.active_set[j] = this.active_set[j], this.active_set[i]
	//do {float64 _=G_bar[i]; G_bar[i]=G_bar[j]; G_bar[j]=_;} while(false);
	this.G_bar[i], this.G_bar[j] = this.G_bar[j], this.G_bar[i]
}

func (this *Solver) reconstruct_gradient() {
	// reconstruct inactive elements of G from G_bar and free variables