spamosaic.preprocessing.sparse_log1p_scale
- spamosaic.preprocessing.sparse_log1p_scale(X, scale=10000.0)[source]
Apply log1p transformation to sparse or dense matrix, scaled by a factor.
- Parameters:
X (Union[scipy.sparse.spmatrix, np.ndarray]) – Input expression matrix.
scale (float, default=1e4) – Scaling factor applied before log1p.
- Returns:
Transformed matrix (same type as input).
- Return type:
Union[scipy.sparse.spmatrix, np.ndarray]