annotate deep/stacked_dae/v_youssouf/nist_sda.py @ 463:5fa1c653620c

added small information on NISTP
author Xavier Glorot <glorotxa@iro.umontreal.ca>
date Fri, 28 May 2010 19:07:14 -0400
parents 8cf52a1c8055
children
rev   line source
371
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1 #!/usr/bin/python
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2 # coding: utf-8
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3
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4 import ift6266
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5 import pylearn
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6
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7 import numpy
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8 import theano
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9 import time
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10
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11 import pylearn.version
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12 import theano.tensor as T
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13 from theano.tensor.shared_randomstreams import RandomStreams
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14
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15 import copy
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16 import sys
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17 import os
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18 import os.path
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19
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20 from jobman import DD
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21 import jobman, jobman.sql
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22 from pylearn.io import filetensor
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23
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24 from utils import produit_cartesien_jobs
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25 from copy import copy
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26
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27 from sgd_optimization import SdaSgdOptimizer
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28
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29 #from ift6266.utils.scalar_series import *
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30 from ift6266.utils.seriestables import *
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31 import tables
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32
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33 from ift6266 import datasets
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34 from config import *
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35
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36
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37
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38 '''
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39 Function called by jobman upon launching each job
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40 Its path is the one given when inserting jobs: see EXPERIMENT_PATH
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41 '''
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42 def jobman_entrypoint(state, channel):
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43 # record mercurial versions of each package
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44 pylearn.version.record_versions(state,[theano,ift6266,pylearn])
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45 # TODO: remove this, bad for number of simultaneous requests on DB
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46 channel.save()
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47
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48 # For test runs, we don't want to use the whole dataset so
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49 # reduce it to fewer elements if asked to.
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50 rtt = None
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51 if state.has_key('reduce_train_to'):
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52 rtt = state['reduce_train_to']
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53 elif REDUCE_TRAIN_TO:
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54 rtt = REDUCE_TRAIN_TO
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55
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56 if state.has_key('decrease_lr'):
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57 decrease_lr = state['decrease_lr']
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58 else :
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59 decrease_lr = 0
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60
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61 n_ins = 32*32
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62 n_outs = 36 # 10 digits, 26 characters (merged lower and capitals)
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63
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64 examples_per_epoch = NIST_ALL_TRAIN_SIZE
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65
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66 #To be sure variables will not be only in the if statement
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67 PATH = ''
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68 nom_reptrain = ''
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69 nom_serie = ""
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70 if state['pretrain_choice'] == 0:
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71 nom_serie="series_NIST.h5"
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72 elif state['pretrain_choice'] == 1:
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73 nom_serie="series_P07.h5"
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74
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75 series = create_series(state.num_hidden_layers,nom_serie)
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76
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77
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78 print "Creating optimizer with state, ", state
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79
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80 optimizer = SdaSgdOptimizer(dataset=datasets.nist_all(),
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81 hyperparameters=state, \
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82 n_ins=n_ins, n_outs=n_outs,\
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83 examples_per_epoch=examples_per_epoch, \
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84 series=series,
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85 max_minibatches=rtt)
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86
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87 parameters=[]
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88 #Number of files of P07 used for pretraining
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89 nb_file=0
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90 if state['pretrain_choice'] == 0:
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91 print('\n\tpretraining with NIST\n')
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92 optimizer.pretrain(datasets.nist_all())
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93 elif state['pretrain_choice'] == 1:
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94 #To know how many file will be used during pretraining
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95 nb_file = int(state['pretraining_epochs_per_layer'])
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96 state['pretraining_epochs_per_layer'] = 1 #Only 1 time over the dataset
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97 if nb_file >=100:
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98 sys.exit("The code does not support this much pretraining epoch (99 max with P07).\n"+
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99 "You have to correct the code (and be patient, P07 is huge !!)\n"+
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100 "or reduce the number of pretraining epoch to run the code (better idea).\n")
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101 print('\n\tpretraining with P07')
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102 optimizer.pretrain(datasets.nist_P07(min_file=0,max_file=nb_file))
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103 channel.save()
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104
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105 #Set some of the parameters used for the finetuning
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106 if state.has_key('finetune_set'):
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107 finetune_choice=state['finetune_set']
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108 else:
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109 finetune_choice=FINETUNE_SET
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110
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111 if state.has_key('max_finetuning_epochs'):
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112 max_finetune_epoch_NIST=state['max_finetuning_epochs']
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113 else:
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114 max_finetune_epoch_NIST=MAX_FINETUNING_EPOCHS
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115
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116 if state.has_key('max_finetuning_epochs_P07'):
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117 max_finetune_epoch_P07=state['max_finetuning_epochs_P07']
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118 else:
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119 max_finetune_epoch_P07=max_finetune_epoch_NIST
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120
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121 #Decide how the finetune is done
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122
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123 if finetune_choice == 0:
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124 print('\n\n\tfinetune with NIST\n\n')
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125 optimizer.reload_parameters('params_pretrain.txt')
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126 optimizer.finetune(datasets.nist_all(),datasets.nist_P07(),max_finetune_epoch_NIST,ind_test=1,decrease=decrease_lr)
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127 channel.save()
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128 if finetune_choice == 1:
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129 print('\n\n\tfinetune with P07\n\n')
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130 optimizer.reload_parameters('params_pretrain.txt')
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131 optimizer.finetune(datasets.nist_P07(),datasets.nist_all(),max_finetune_epoch_P07,ind_test=0,decrease=decrease_lr)
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132 channel.save()
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133 if finetune_choice == 2:
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134 print('\n\n\tfinetune with P07\n\n')
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135 optimizer.reload_parameters('params_pretrain.txt')
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136 optimizer.finetune(datasets.nist_P07(),datasets.nist_all(),max_finetune_epoch_P07,ind_test=20,decrease=decrease_lr)
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137 #optimizer.finetune(datasets.nist_all(),datasets.nist_P07(),max_finetune_epoch_NIST,ind_test=21,decrease=decrease_lr)
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138 channel.save()
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139 if finetune_choice == 3:
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140 print('\n\n\tfinetune with NIST only on the logistic regression on top (but validation on P07).\n\
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141 All hidden units output are input of the logistic regression\n\n')
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142 optimizer.reload_parameters('params_pretrain.txt')
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143 optimizer.finetune(datasets.nist_all(),datasets.nist_P07(),max_finetune_epoch_NIST,ind_test=1,special=1,decrease=decrease_lr)
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144
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145
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146 if finetune_choice==-1:
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147 print('\nSERIE OF 4 DIFFERENT FINETUNINGS')
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148 print('\n\n\tfinetune with NIST\n\n')
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149 sys.stdout.flush()
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150 optimizer.reload_parameters('params_pretrain.txt')
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151 optimizer.finetune(datasets.nist_all(),datasets.nist_P07(),max_finetune_epoch_NIST,ind_test=1,decrease=decrease_lr)
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152 channel.save()
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153 print('\n\n\tfinetune with P07\n\n')
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154 sys.stdout.flush()
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155 optimizer.reload_parameters('params_pretrain.txt')
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156 optimizer.finetune(datasets.nist_P07(),datasets.nist_all(),max_finetune_epoch_P07,ind_test=0,decrease=decrease_lr)
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157 channel.save()
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158 print('\n\n\tfinetune with P07 (done earlier) followed by NIST (written here)\n\n')
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159 sys.stdout.flush()
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160 optimizer.reload_parameters('params_finetune_P07.txt')
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161 optimizer.finetune(datasets.nist_all(),datasets.nist_P07(),max_finetune_epoch_NIST,ind_test=21,decrease=decrease_lr)
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162 channel.save()
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163 print('\n\n\tfinetune with NIST only on the logistic regression on top.\n\
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164 All hidden units output are input of the logistic regression\n\n')
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165 sys.stdout.flush()
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166 optimizer.reload_parameters('params_pretrain.txt')
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167 optimizer.finetune(datasets.nist_all(),datasets.nist_P07(),max_finetune_epoch_NIST,ind_test=1,special=1,decrease=decrease_lr)
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168 channel.save()
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169
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170 channel.save()
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171
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172 return channel.COMPLETE
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173
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174 # These Series objects are used to save various statistics
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175 # during the training.
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176 def create_series(num_hidden_layers, nom_serie):
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177
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178 # Replace series we don't want to save with DummySeries, e.g.
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179 # series['training_error'] = DummySeries()
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180
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181 series = {}
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182
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183 basedir = os.getcwd()
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184
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185 h5f = tables.openFile(os.path.join(basedir, nom_serie), "w")
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186
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187 # reconstruction
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188 reconstruction_base = \
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189 ErrorSeries(error_name="reconstruction_error",
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190 table_name="reconstruction_error",
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191 hdf5_file=h5f,
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192 index_names=('epoch','minibatch'),
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193 title="Reconstruction error (mean over "+str(REDUCE_EVERY)+" minibatches)")
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194 series['reconstruction_error'] = \
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195 AccumulatorSeriesWrapper(base_series=reconstruction_base,
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196 reduce_every=REDUCE_EVERY)
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197
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198 # train
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199 training_base = \
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200 ErrorSeries(error_name="training_error",
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201 table_name="training_error",
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202 hdf5_file=h5f,
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203 index_names=('epoch','minibatch'),
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204 title="Training error (mean over "+str(REDUCE_EVERY)+" minibatches)")
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205 series['training_error'] = \
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206 AccumulatorSeriesWrapper(base_series=training_base,
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207 reduce_every=REDUCE_EVERY)
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208
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209 # valid and test are not accumulated/mean, saved directly
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210 series['validation_error'] = \
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211 ErrorSeries(error_name="validation_error",
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212 table_name="validation_error",
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213 hdf5_file=h5f,
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214 index_names=('epoch','minibatch'))
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215
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216 series['test_error'] = \
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217 ErrorSeries(error_name="test_error",
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218 table_name="test_error",
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219 hdf5_file=h5f,
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220 index_names=('epoch','minibatch'))
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221
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222 param_names = []
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223 for i in range(num_hidden_layers):
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224 param_names += ['layer%d_W'%i, 'layer%d_b'%i, 'layer%d_bprime'%i]
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225 param_names += ['logreg_layer_W', 'logreg_layer_b']
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226
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227 # comment out series we don't want to save
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228 series['params'] = SharedParamsStatisticsWrapper(
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229 new_group_name="params",
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230 base_group="/",
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231 arrays_names=param_names,
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232 hdf5_file=h5f,
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233 index_names=('epoch',))
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234
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235 return series
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236
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237 # Perform insertion into the Postgre DB based on combination
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238 # of hyperparameter values above
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239 # (see comment for produit_cartesien_jobs() to know how it works)
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240 def jobman_insert_nist():
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241 jobs = produit_cartesien_jobs(JOB_VALS)
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242
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243 db = jobman.sql.db(JOBDB)
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244 for job in jobs:
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245 job.update({jobman.sql.EXPERIMENT: EXPERIMENT_PATH})
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246 jobman.sql.insert_dict(job, db)
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247
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248 print "inserted"
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249
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250 if __name__ == '__main__':
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251
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252 args = sys.argv[1:]
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253
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254 #if len(args) > 0 and args[0] == 'load_nist':
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255 # test_load_nist()
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256
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257 if len(args) > 0 and args[0] == 'jobman_insert':
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258 jobman_insert_nist()
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259
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260 elif len(args) > 0 and args[0] == 'test_jobman_entrypoint':
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261 chanmock = DD({'COMPLETE':0,'save':(lambda:None)})
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262 jobman_entrypoint(DD(DEFAULT_HP_NIST), chanmock)
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263
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264 else:
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265 print "Bad arguments"
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266