Mercurial > ift6266
view scripts/setup_batches.py @ 489:ee9836baade3
merge
author | dumitru@dumitru.mtv.corp.google.com |
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date | Mon, 31 May 2010 19:07:59 -0700 |
parents | 22919039f7ab |
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# -*- coding: utf-8 -*- import random from numpy import * from pylearn.io import filetensor as ft class Batches(): def __init__(self): data_path = '/data/lisa/data/nist/by_class/' digits_train_data = 'digits/digits_train_data.ft' digits_train_labels = 'digits/digits_train_labels.ft' digits_test_data = 'digits/digits_test_data.ft' digits_test_labels = 'digits/digits_test_labels.ft' lower_train_data = 'lower/lower_train_data.ft' lower_train_labels = 'lower/lower_train_labels.ft' lower_test_data = 'lower/lower_test_data.ft' lower_test_labels = 'lower/lower_test_labels.ft' upper_train_data = 'upper/upper_train_data.ft' upper_train_labels = 'upper/upper_train_labels.ft' upper_test_data = 'upper/upper_test_data.ft' upper_test_labels = 'upper/upper_test_labels.ft' test_data = 'all/all_test_data.ft' test_labels = 'all/all_test_labels.ft' print 'Opening data...' f_digits_train_data = open(data_path + digits_train_data) f_digits_train_labels = open(data_path + digits_train_labels) f_digits_test_data = open(data_path + digits_test_data) f_digits_test_labels = open(data_path + digits_test_labels) f_lower_train_data = open(data_path + lower_train_data) f_lower_train_labels = open(data_path + lower_train_labels) f_lower_test_data = open(data_path + lower_test_data) f_lower_test_labels = open(data_path + lower_test_labels) f_upper_train_data = open(data_path + upper_train_data) f_upper_train_labels = open(data_path + upper_train_labels) f_upper_test_data = open(data_path + upper_test_data) f_upper_test_labels = open(data_path + upper_test_labels) #f_test_data = open(data_path + test_data) #f_test_labels = open(data_path + test_labels) self.raw_digits_train_data = ft.read(f_digits_train_data) self.raw_digits_train_labels = ft.read(f_digits_train_labels) self.raw_digits_test_data = ft.read(f_digits_test_data) self.raw_digits_test_labels = ft.read(f_digits_test_labels) self.raw_lower_train_data = ft.read(f_lower_train_data) self.raw_lower_train_labels = ft.read(f_lower_train_labels) self.raw_lower_test_data = ft.read(f_lower_test_data) self.raw_lower_test_labels = ft.read(f_lower_test_labels) self.raw_upper_train_data = ft.read(f_upper_train_data) self.raw_upper_train_labels = ft.read(f_upper_train_labels) self.raw_upper_test_data = ft.read(f_upper_test_data) self.raw_upper_test_labels = ft.read(f_upper_test_labels) #self.raw_test_data = ft.read(f_test_data) #self.raw_test_labels = ft.read(f_test_labels) f_digits_train_data.close() f_digits_train_labels.close() f_digits_test_data.close() f_digits_test_labels.close() f_lower_train_data.close() f_lower_train_labels.close() f_lower_test_data.close() f_lower_test_labels.close() f_upper_train_data.close() f_upper_train_labels.close() f_upper_test_data.close() f_upper_test_labels.close() #f_test_data.close() #f_test_labels.close() print 'Data opened' def set_batches(self, main_class = "d", start_ratio = -1, end_ratio = -1, batch_size = 20, verbose = False): self.batch_size = batch_size digits_train_size = len(self.raw_digits_train_labels) digits_test_size = len(self.raw_digits_test_labels) lower_train_size = len(self.raw_lower_train_labels) upper_train_size = len(self.raw_upper_train_labels) upper_test_size = len(self.raw_upper_test_labels) if verbose == True: print 'digits_train_size = %d' %digits_train_size print 'digits_test_size = %d' %digits_test_size print 'lower_train_size = %d' %lower_train_size print 'upper_train_size = %d' %upper_train_size print 'upper_test_size = %d' %upper_test_size if main_class == "u": # define main and other datasets raw_main_train_data = self.raw_upper_train_data raw_other_train_data1 = self.raw_lower_train_labels raw_other_train_data2 = self.raw_digits_train_labels raw_test_data = self.raw_upper_test_data raw_main_train_labels = self.raw_upper_train_labels raw_other_train_labels1 = self.raw_lower_train_labels raw_other_train_labels2 = self.raw_digits_train_labels raw_test_labels = self.raw_upper_test_labels elif main_class == "l": # define main and other datasets raw_main_train_data = self.raw_lower_train_data raw_other_train_data1 = self.raw_upper_train_labels raw_other_train_data2 = self.raw_digits_train_labels raw_test_data = self.raw_lower_test_data raw_main_train_labels = self.raw_lower_train_labels raw_other_train_labels1 = self.raw_upper_train_labels raw_other_train_labels2 = self.raw_digits_train_labels raw_test_labels = self.raw_lower_test_labels else: main_class = "d" # define main and other datasets raw_main_train_data = self.raw_digits_train_data raw_other_train_data1 = self.raw_lower_train_labels raw_other_train_data2 = self.raw_upper_train_labels raw_test_data = self.raw_digits_test_data raw_main_train_labels = self.raw_digits_train_labels raw_other_train_labels1 = self.raw_lower_train_labels raw_other_train_labels2 = self.raw_upper_train_labels raw_test_labels = self.raw_digits_test_labels main_train_size = len(raw_main_train_labels) other_train_size1 = len(raw_other_train_labels1) other_train_size2 = len(raw_other_train_labels2) other_train_size = other_train_size1 + other_train_size2 test_size = len(raw_test_labels) test_size = int(test_size/batch_size) test_size *= batch_size validation_size = test_size # default ratio is actual ratio if start_ratio == -1: self.start_ratio = float(main_train_size - test_size) / float(main_train_size + other_train_size) else: self.start_ratio = start_ratio if start_ratio == -1: self.end_ratio = float(main_train_size - test_size) / float(main_train_size + other_train_size) else: self.end_ratio = end_ratio if verbose == True: print 'main class : %s' %main_class print 'start_ratio = %f' %self.start_ratio print 'end_ratio = %f' %self.end_ratio i_main = 0 i_other1 = 0 i_other2 = 0 i_batch = 0 # compute the number of batches given start and end ratios n_main_batch = (main_train_size - test_size - batch_size * (self.end_ratio - self.start_ratio) / 2 ) / (batch_size * (self.start_ratio + (self.end_ratio - self.start_ratio) / 2)) if (batch_size != batch_size * (self.start_ratio + (self.end_ratio - self.start_ratio) / 2)): n_other_batch = (other_train_size - batch_size * (self.end_ratio - self.start_ratio) / 2 ) / (batch_size - batch_size * (self.start_ratio + (self.end_ratio - self.start_ratio) / 2)) else: n_other_batch = n_main_batch n_batches = min([n_main_batch, n_other_batch]) # train batches self.train_batches = [] # as long as we have data left in main and other, we create batches while i_main < main_train_size - batch_size - test_size and i_other1 < other_train_size1 - batch_size and i_other2 < other_train_size2 - batch_size: ratio = self.start_ratio + i_batch * (self.end_ratio - self.start_ratio) / n_batches batch_data = copy(raw_main_train_data[0:self.batch_size]) batch_labels = copy(raw_main_train_labels[0:self.batch_size]) for i in xrange(0, self.batch_size): # randomly choose between main and other, given the current ratio rnd1 = random.randint(0, 100) if rnd1 < 100 * ratio: batch_data[i] = raw_main_train_data[i_main] batch_labels[i] = raw_main_train_labels[i_main] i_main += 1 else: rnd2 = random.randint(0, 100) if rnd2 < 100 * float(other_train_size1) / float(other_train_size): batch_data[i] = raw_other_train_data1[i_other1] batch_labels[i] = raw_other_train_labels1[i_other1] i_other1 += 1 else: batch_data[i] = raw_other_train_data2[i_other2] batch_labels[i] = raw_other_train_labels2[i_other2] i_other2 += 1 self.train_batches = self.train_batches + \ [(batch_data, batch_labels)] i_batch += 1 offset = i_main # test batches self.test_batches = [] for i in xrange(0, test_size, batch_size): self.test_batches = self.test_batches + \ [(raw_test_data[i:i+batch_size], raw_test_labels[i:i+batch_size])] # validation batches self.validation_batches = [] for i in xrange(0, validation_size, batch_size): self.validation_batches = self.validation_batches + \ [(raw_main_train_data[offset+i:offset+i+batch_size], raw_main_train_labels[offset+i:offset+i+batch_size])] if verbose == True: print 'n_main = %d' %i_main print 'n_other1 = %d' %i_other1 print 'n_other2 = %d' %i_other2 print 'nb_train_batches = %d / %d' %(i_batch,n_batches) print 'offset = %d' %offset def get_train_batches(self): return self.train_batches def get_test_batches(self): return self.test_batches def get_validation_batches(self): return self.validation_batches def test_set_batches(self, intervall = 1000): for i in xrange(0, len(self.train_batches) - self.batch_size, intervall): n_main = 0 for j in xrange(0, self.batch_size): if self.train_batches[i][1][j] < 10: n_main +=1 print 'ratio batch %d : %f' %(i,float(n_main) / float(self.batch_size)) if __name__ == '__main__': batches = Batches() batches.set_batches(0.5,1, 20, True) batches.test_set_batches()