mvpa2.datasets.sources.skl_data.skl_hastie_10_2

mvpa2.datasets.sources.skl_data.skl_hastie_10_2(n_samples=12000, random_state=None)

Generates data for binary classification used in Hastie et al. 2009, Example 10.2.

The ten features are standard independent Gaussian and the target y is defined by:

y[i] = 1 if np.sum(X[i] ** 2) > 9.34 else -1

Parameters:

n_samples : int, optional (default=12000)

The number of samples.

random_state : int, RandomState instance or None, optional (default=None)

If int, random_state is the seed used by the random number generator; If RandomState instance, random_state is the random number generator; If None, the random number generator is the RandomState instance used by np.random.

Returns:

X : array of shape [n_samples, 10]

The input samples.

y : array of shape [n_samples]

The output values.

See also

make_gaussian_quantiles

a generalization of this dataset approach

Notes

This function has been auto-generated by wrapping make_hastie_10_2() from the sklearn package. The documentation of this function has been kept verbatim. Consequently, the actual return value is not as described in the documentation, but the data is returned as a PyMVPA dataset.

References

[R32]

T. Hastie, R. Tibshirani and J. Friedman, “Elements of Statistical Learning Ed. 2”, Springer, 2009.