double [ ] [ ] function ( ) { return projection ; }
returns the projection matrix . when gha converges , the column of projection matrix are the first p eigenvectors of covariance matrix , ordered by decreasing eigenvalues . the dimension reduced data can be obtained by y = w x. concode_field_sep int p concode_elem_sep double r concode_elem_sep double[] wy concode_elem_sep double[] y concode_elem_sep double[][] projection concode_elem_sep int n concode_field_sep double learn concode_elem_sep double getLearningRate concode_elem_sep double[] project concode_elem_sep double[][] project concode_elem_sep GHA setLearningRate