bbobbenchmarks.py 文件源码

def initwithsize(self, curshape, dim):
        # DIM-dependent initialization
        if self.dim != dim:
            if self.zerox:
                self.xopt = zeros(dim)
            else:
                self.xopt = compute_xopt(self.rseed, dim)
            self.rotation = compute_rotation(self.rseed + 1e6, dim)
            self.scales = (1. / self.condition ** .5) ** linspace(0, 1, dim) # CAVE?
            self.linearTF = dot(compute_rotation(self.rseed, dim), diag(self.scales))
            # decouple scaling from function definition
            self.linearTF = dot(self.linearTF, self.rotation)
            K = np.arange(0, 12)
            self.aK = np.reshape(0.5 ** K, (1, 12))
            self.bK = np.reshape(3. ** K, (1, 12))
            self.f0 = np.sum(self.aK * np.cos(2 * np.pi * self.bK * 0.5)) # optimal value

        # DIM- and POPSI-dependent initialisations of DIM*POPSI matrices
        if self.lastshape != curshape:
            self.dim = dim
            self.lastshape = curshape
            self.arrxopt = resize(self.xopt, curshape)