def chi2_kernel(X, Y=None, gamma=1.):
    K = additive_chi2_kernel(X, Y)
    K *= gamma
    return np.exp(K, K)


# Helper functions - distance
Test to ensure the RabbitMQ VHost exists.
dataset/ETHPy150Open scikit-learn/scikit-learn/sklearn/metrics/pairwise.py/chi2_kernel--crossover with--dataset/ETHPy150Open saltstack/salt/tests/unit/states/rabbitmq_vhost_test.py/RabbitmqVhostTestCase.test_present