make_sparse_coded_signal(n_samples, n_components, n_features, n_nonzero_coefs, random_state=None)¶
Generate a signal as a sparse combination of dictionary elements.
Returns a matrix Y = DX, such as D is (n_features, n_components), X is (n_components, n_samples) and each column of X has exactly n_nonzero_coefs non-zero elements.
Read more in the User Guide.
number of samples to generate
number of components in the dictionary
number of features of the dataset to generate
number of active (non-zero) coefficients in each sample
- 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.
- dataarray of shape [n_features, n_samples]
The encoded signal (Y).
- dictionaryarray of shape [n_features, n_components]
The dictionary with normalized components (D).
- codearray of shape [n_components, n_samples]
The sparse code such that each column of this matrix has exactly n_nonzero_coefs non-zero items (X).