TypeError: _compute_once() got an unexpected keyword argument 'dpp'

[BabaUtah]

Hi!
While executing the following code given for the poisoning attack :

from cvxpylayers.tensorflow.cvxpylayer import CvxpyLayer
from sklearn.datasets import make_blobs
from sklearn.model_selection import train_test_split


tf.random.set_seed(0)
np.random.seed(0)
n = 2
N = 60
X, y = make_blobs(N, n, centers=np.array([[2, 2], [-2, -2]]), cluster_std=3)
Xtrain, Xtest, ytrain, ytest = train_test_split(X, y, test_size=.5)

Xtrain, Xtest, ytrain, ytest = map(
    tf.constant, [Xtrain, Xtest, ytrain, ytest])
m = Xtrain.shape[0]

lambda1_tf = tf.constant([[0.1]], dtype=tf.float64)
lambda2_tf = tf.constant([[0.1]], dtype=tf.float64)

a = cp.Variable((n, 1))
b = cp.Variable((1, 1))
lambda1 = cp.Parameter((1, 1), nonneg=True)
lambda2 = cp.Parameter((1, 1), nonneg=True)
X = cp.Parameter((m, n))
Y = ytrain.numpy()[:, np.newaxis]

log_likelihood = (1. / m) * cp.sum(
    cp.multiply(Y, X @ a + b) -
    cp.log_sum_exp(cp.hstack([np.zeros((m, 1)), X @ a + b]).T, axis=0,
                   keepdims=True).T
)
regularization = - lambda1 * cp.norm(a, 1) - lambda2 * cp.sum_squares(a)
prob = cp.Problem(cp.Maximize(log_likelihood + regularization))
fit_logreg = CvxpyLayer(prob, [X, lambda1, lambda2], [a, b])

I encounter the following error :

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-39-46df02174119> in <module>()
     38 regularization = - lambda1 * cp.norm(a, 1) - lambda2 * cp.sum_squares(a)
     39 prob = cp.Problem(cp.Maximize(log_likelihood + regularization))
---> 40 fit_logreg = CvxpyLayer(prob, [X, lambda1, lambda2], [a, b])

/usr/local/lib/python3.7/dist-packages/cvxpylayers/tensorflow/cvxpylayer.py in __init__(self, problem, parameters, variables, gp)
     73                 raise ValueError('Problem must be DPP.')
     74         else:
---> 75             if not problem.is_dcp(dpp=True):
     76                 raise ValueError('Problem must be DPP.')
     77         if set(parameters) != set(problem.parameters()):

TypeError: _compute_once() got an unexpected keyword argument 'dpp'

Any idea to overcome this issue ?

[akshayka]

Try upgrading your version of CVXPY