sklearn.datasets.make_sparse_uncorrelated¶

sklearn.datasets.make_sparse_uncorrelated(n_samples=100, n_features=10, *, random_state=None)[source]¶

Generate a random regression problem with sparse uncorrelated design

This dataset is described in Celeux et al [1]. as:

X ~ N(0, 1)
y(X) = X[:, 0] + 2 * X[:, 1] - 2 * X[:, 2] - 1.5 * X[:, 3]

Only the first 4 features are informative. The remaining features are useless.

Read more in the User Guide.

Parameters

n_samplesint, optional (default=100)

The number of samples.

n_featuresint, optional (default=10)

The number of features.

random_stateint, RandomState instance, default=None

Determines random number generation for dataset creation. Pass an int for reproducible output across multiple function calls. See Glossary.

Returns

Xarray of shape [n_samples, n_features]

The input samples.

yarray of shape [n_samples]

The output values.

References

1

G. Celeux, M. El Anbari, J.-M. Marin, C. P. Robert, “Regularization in regression: comparing Bayesian and frequentist methods in a poorly informative situation”, 2009.