本文整理汇总了Python中sklearn.linear_model.coordinate_descent.ElasticNet.score方法的典型用法代码示例。如果您正苦于以下问题：Python ElasticNet.score方法的具体用法？Python ElasticNet.score怎么用？Python ElasticNet.score使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类sklearn.linear_model.coordinate_descent.ElasticNet的用法示例。
在下文中一共展示了ElasticNet.score方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: _test_sparse_enet_not_as_toy_dataset
# 需要导入模块: from sklearn.linear_model.coordinate_descent import ElasticNet [as 别名]
# 或者: from sklearn.linear_model.coordinate_descent.ElasticNet import score [as 别名]
def _test_sparse_enet_not_as_toy_dataset(alpha, fit_intercept, positive):
n_samples, n_features, max_iter = 100, 100, 1000
n_informative = 10
X, y = make_sparse_data(n_samples, n_features, n_informative,
positive=positive)
X_train, X_test = X[n_samples / 2:], X[:n_samples / 2]
y_train, y_test = y[n_samples / 2:], y[:n_samples / 2]
s_clf = ElasticNet(alpha=alpha, l1_ratio=0.8, fit_intercept=fit_intercept,
max_iter=max_iter, tol=1e-7, positive=positive,
warm_start=True)
s_clf.fit(X_train, y_train)
assert_almost_equal(s_clf.dual_gap_, 0, 4)
assert_greater(s_clf.score(X_test, y_test), 0.85)
# check the convergence is the same as the dense version
d_clf = ElasticNet(alpha=alpha, l1_ratio=0.8, fit_intercept=fit_intercept,
max_iter=max_iter, tol=1e-7, positive=positive,
warm_start=True)
d_clf.fit(X_train.todense(), y_train)
assert_almost_equal(d_clf.dual_gap_, 0, 4)
assert_greater(d_clf.score(X_test, y_test), 0.85)
assert_almost_equal(s_clf.coef_, d_clf.coef_, 5)
assert_almost_equal(s_clf.intercept_, d_clf.intercept_, 5)
# check that the coefs are sparse
assert_less(np.sum(s_clf.coef_ != 0.0), 2 * n_informative)示例2: test_sparse_enet_not_as_toy_dataset
# 需要导入模块: from sklearn.linear_model.coordinate_descent import ElasticNet [as 别名]
# 或者: from sklearn.linear_model.coordinate_descent.ElasticNet import score [as 别名]
def test_sparse_enet_not_as_toy_dataset():
n_samples, n_features, max_iter = 100, 100, 1000
n_informative = 10
X, y = make_sparse_data(n_samples, n_features, n_informative)
X_train, X_test = X[n_samples / 2:], X[:n_samples / 2]
y_train, y_test = y[n_samples / 2:], y[:n_samples / 2]
s_clf = SparseENet(alpha=0.1, rho=0.8, fit_intercept=False,
max_iter=max_iter, tol=1e-7)
s_clf.fit(X_train, y_train)
assert_almost_equal(s_clf.dual_gap_, 0, 4)
assert s_clf.score(X_test, y_test) > 0.85
# check the convergence is the same as the dense version
d_clf = DenseENet(alpha=0.1, rho=0.8, fit_intercept=False,
max_iter=max_iter, tol=1e-7)
d_clf.fit(X_train, y_train)
assert_almost_equal(d_clf.dual_gap_, 0, 4)
assert d_clf.score(X_test, y_test) > 0.85
assert_almost_equal(s_clf.coef_, d_clf.coef_, 5)
# check that the coefs are sparse
assert np.sum(s_clf.coef_ != 0.0) < 2 * n_informative示例3: _test_sparse_enet_not_as_toy_dataset
# 需要导入模块: from sklearn.linear_model.coordinate_descent import ElasticNet [as 别名]
# 或者: from sklearn.linear_model.coordinate_descent.ElasticNet import score [as 别名]
def _test_sparse_enet_not_as_toy_dataset(alpha, fit_intercept, positive):
n_samples, n_features, max_iter = 100, 100, 1000
n_informative = 10
X, y = make_sparse_data(n_samples, n_features, n_informative,
positive=positive)
X_train, X_test = X[n_samples / 2:], X[:n_samples / 2]
y_train, y_test = y[n_samples / 2:], y[:n_samples / 2]
s_clf = ElasticNet(alpha=alpha, rho=0.8, fit_intercept=fit_intercept,
max_iter=max_iter, tol=1e-7, positive=positive,
warm_start=True)
s_clf.fit(X_train, y_train)
assert_almost_equal(s_clf.dual_gap_, 0, 4)
assert_greater(s_clf.score(X_test, y_test), 0.85)
# check the convergence is the same as the dense version
d_clf = ElasticNet(alpha=alpha, rho=0.8, fit_intercept=fit_intercept,
max_iter=max_iter, tol=1e-7, positive=positive,
warm_start=True)
d_clf.fit(X_train, y_train)
assert_almost_equal(d_clf.dual_gap_, 0, 4)
assert_greater(d_clf.score(X_test, y_test), 0.85)
assert_almost_equal(s_clf.coef_, d_clf.coef_, 5)
assert_almost_equal(s_clf.intercept_, d_clf.intercept_, 5)
# check that the coefs are sparse
assert_less(np.sum(s_clf.coef_ != 0.0), 2 * n_informative)
# check that warm restart leads to the same result with
# sparse and dense versions
rng = np.random.RandomState(seed=0)
coef_init = rng.randn(n_features)
d_clf.fit(X_train, y_train, coef_init=coef_init)
s_clf.fit(X_train, y_train, coef_init=coef_init)
assert_almost_equal(s_clf.coef_, d_clf.coef_, 5)
assert_almost_equal(s_clf.intercept_, d_clf.intercept_, 5)示例4: test_fit_simple_backupsklearn
# 需要导入模块: from sklearn.linear_model.coordinate_descent import ElasticNet [as 别名]
# 或者: from sklearn.linear_model.coordinate_descent.ElasticNet import score [as 别名]
def test_fit_simple_backupsklearn():
df = pd.read_csv("./open_data/simple.txt", delim_whitespace=True)
X = np.array(df.iloc[:, :df.shape[1] - 1], dtype='float32', order='C')
y = np.array(df.iloc[:, df.shape[1] - 1], dtype='float32', order='C')
Solver = h2o4gpu.ElasticNet
enet = Solver(glm_stop_early=False)
print("h2o4gpu fit()")
enet.fit(X, y)
print("h2o4gpu predict()")
print(enet.predict(X))
print("h2o4gpu score()")
print(enet.score(X,y))
enet_wrapper = Solver(positive=True, random_state=1234)
print("h2o4gpu scikit wrapper fit()")
enet_wrapper.fit(X, y)
print("h2o4gpu scikit wrapper predict()")
print(enet_wrapper.predict(X))
print("h2o4gpu scikit wrapper score()")
print(enet_wrapper.score(X, y))
from sklearn.linear_model.coordinate_descent import ElasticNet
enet_sk = ElasticNet(positive=True, random_state=1234)
print("Scikit fit()")
enet_sk.fit(X, y)
print("Scikit predict()")
print(enet_sk.predict(X))
print("Scikit score()")
print(enet_sk.score(X, y))
enet_sk_coef = csr_matrix(enet_sk.coef_, dtype=np.float32).toarray()
print(enet_sk.coef_)
print(enet_sk_coef)
print(enet_wrapper.coef_)
print(enet_sk.intercept_)
print(enet_wrapper.intercept_)
print(enet_sk.n_iter_)
print(enet_wrapper.n_iter_)
print("Coeffs, intercept, and n_iters should match")
assert np.allclose(enet_wrapper.coef_, enet_sk_coef)
assert np.allclose(enet_wrapper.intercept_, enet_sk.intercept_)