io.py 文件源码

def normalize(x, sf, logtrans=True, sfnorm=True, zeromean=True):
    if sfnorm:
        assert len(sf.shape) == 1
        x = x / (sf[:, None]+1e-8)  # colwise div

    if logtrans:
        x = np.log1p(x)

    if zeromean:
        x = scale(x)

    return x