ab4d0a6e6cded5c967d601da6000b8c50b5c65ef,gpytorch/utils/toeplitz.py,,sym_toeplitz_derivative_quadratic_form,#Any#Any#,243

Before Change

    dT_dc_row = utils.reverse(left_vector)
    dT_dc_col[0] = dT_dc_row[0]
    res = res + toeplitz_matmul(dT_dc_col, dT_dc_row, utils.reverse(right_vector))
    res[0] -= left_vector.dot(right_vector)

    return res

After Change

        - vector m - a vector so that the ith element is the result of \sum_j(u[j]*(dT/dc_i)*v[j])
    
    if left_vectors.ndimension() == 1:
        left_vectors = left_vectors.unsqueeze(0)
        right_vectors = right_vectors.unsqueeze(0)
    s, m = left_vectors.size()
    dT_dc_col = torch.zeros(m)

    res = torch.zeros(m)

    for j in range(s):
        dT_dc_row = left_vectors[j]
        dT_dc_col[0] = dT_dc_row[0]
        res += toeplitz_matmul(dT_dc_col, dT_dc_row, right_vectors[j])
        dT_dc_row = utils.reverse(left_vectors[j])
        dT_dc_col[0] = dT_dc_row[0]
        res = res + toeplitz_matmul(dT_dc_col, dT_dc_row, utils.reverse(right_vectors[j]))

    res[0] -= (left_vectors * right_vectors).sum()

    return res

Instances