<s> import h5py <EOL> import numpy as np <EOL> import scipy . linalg <EOL> import argparse <EOL> from lfd . rapprentice . tps import tps_kernel_matrix <EOL> def parse_arguments ( ) : <EOL> parser = argparse . ArgumentParser ( ) <EOL> parser . add_argument ( '<STR_LIT>' , type = str ) <EOL> parser . add_argument ( '<STR_LIT>' , type = float , default = <NUM_LIT:10> ) <EOL> parser . add_argument ( '<STR_LIT>' , type = float , default = <NUM_LIT> ) <EOL> parser . add_argument ( '<STR_LIT>' , type = int , default = <NUM_LIT:20> ) <EOL> parser . add_argument ( '<STR_LIT>' , action = '<STR_LIT:store_true>' ) <EOL> return parser . parse_args ( ) <EOL> def get_lu_decomp ( x_na , bend_coef , rot_coef ) : <EOL> """<STR_LIT>""" <EOL> n , d = x_na . shape <EOL> Q = np . c_ [ np . ones ( ( n , <NUM_LIT:1> ) ) , x_na , K_nn ] <EOL> QWQ = Q . T . dot ( WQ ) <EOL> H = Q . T . dot ( Q ) <EOL> H [ d + <NUM_LIT:1> : , d + <NUM_LIT:1> : ] += bend_coef * K_nn <EOL> rot_coefs = np . ones ( d ) * rot_coef if np . isscalar ( rot_coef ) else rot_coef <EOL> H [ <NUM_LIT:1> : d + <NUM_LIT:1> , <NUM_LIT:1> : d + <NUM_LIT:1> ] += np . diag ( rot_coefs ) <EOL> A = np . r_ [ np . zeros ( ( d + <NUM_LIT:1> , d + <NUM_LIT:1> ) ) , np . c_ [ np . ones ( ( n , <NUM_LIT:1> ) ) , x_na ] ] . T <EOL> _u , _s , _vh = np . linalg . svd ( A . T ) <EOL> N = _u [ : , n_cnts : ] <EOL> p , l , u , = scipy . linalg . lu ( N . T . dot ( H . dot ( N ) ) ) <EOL> res_dict = { '<STR_LIT:p>' : p , '<STR_LIT:l>' : l , '<STR_LIT:u>' : u , '<STR_LIT:N>' : N , '<STR_LIT>' : rot_coeffs } <EOL> return bend_coeff , res_dict <EOL> def main ( ) : <EOL> args = parse_arguments ( ) <EOL> f = h5py . File ( args . datafile , '<STR_LIT:r>' ) <EOL> bend_coefs = np . loglinspace ( args . bend_coef_init , args . bend_coeff_final , args . n_iter ) <EOL> for seg_name , seg_info in f . iteritems ( ) : <EOL> if '<STR_LIT>' not in seg_info : <EOL> lu_group = seg_info . create_group ( '<STR_LIT>' ) <EOL> else : <EOL> lu_group = seg_info [ '<STR_LIT>' ] <EOL> x_na = seg_info [ '<STR_LIT>' ] [ : ] <EOL> for bend_coeff in bend_coeffs : <EOL> if str ( bend_coeff ) in lu_group : <EOL> continue <EOL> bend_coeff_g = lu_group . create_group ( str ( bend_coeff ) ) <EOL> _ , res = get_lu_decomp ( x_na , bend_coeff ) <EOL> for k , v in res . iteritems ( ) : <EOL> bend_coeff_g [ k ] = v <EOL> if args . verbose : <EOL> print '<STR_LIT>' . format ( seg_name , bend_coeff ) <EOL> f . close ( ) <EOL> if __name__ == '<STR_LIT:__main__>' : <EOL> main ( ) </s>
