text: #training parameters
  TRAIN_GPU_ID = 0
  TEST_GPU_ID = 0
  BATCH_SIZE = 200
  VAL_BATCH_SIZE = 200
  PRINT_INTERVAL = 100
  VALIDATE_INTERVAL = 5000 
  MAX_ITERATIONS = 100000
  RESTORE_ITER = 0 # iteration to restore. *.solverstate file is needed!
  # what data to use for training
  TRAIN_DATA_SPLITS = 'train'
  # what data to use for the vocabulary
  QUESTION_VOCAB_SPACE = 'train'
  ANSWER_VOCAB_SPACE = 'train' # test/test-dev/genome should not appear here
  
  #network parameters
  NUM_OUTPUT_UNITS = 3000 # This is the answer vocabulary size
  MFB_FACTOR_NUM = 5
  MFB_OUT_DIM = 1000
  LSTM_UNIT_NUM = 1024
  JOINT_EMB_SIZE = MFB_FACTOR_NUM*MFB_OUT_DIM
  MAX_WORDS_IN_QUESTION = 15
  LSTM_DROPOUT_RATIO = 0.3
  MFB_DROPOUT_RATIO = 0.1
  
  # vqa tools - get from https://github.com/VT-vision-lab/VQA
  VQA_TOOLS_PATH = '/home/yuz/data/VQA/PythonHelperTools'
  VQA_EVAL_TOOLS_PATH = '/home/yuz/data/VQA/PythonEvaluationTools'
  
  # location of the data
  VQA_PREFIX = '/home/yuz/data/VQA'
  
  feat = 'pool5'
  DATA_PATHS = {
  	'train': {
  		'ques_file': VQA_PREFIX + '/Questions/OpenEnded_mscoco_train2014_questions.json',
  		'ans_file': VQA_PREFIX + '/Annotations/mscoco_train2014_annotations.json',
  		'features_prefix': VQA_PREFIX + '/Features/ms_coco/resnet_%s_bgrms_large/train2014/COCO_train2014_'%feat
  	},
  	'val': {
  		'ques_file': VQA_PREFIX + '/Questions/OpenEnded_mscoco_val2014_questions.json',
  		'ans_file': VQA_PREFIX + '/Annotations/mscoco_val2014_annotations.json',
  		'features_prefix': VQA_PREFIX + '/Features/ms_coco/resnet_%s_bgrms_large/val2014/COCO_val2014_'%feat
  	},
  	'test-dev': {
  		'ques_file': VQA_PREFIX + '/Questions/OpenEnded_mscoco_test-dev2015_questions.json',
  		'features_prefix': VQA_PREFIX + '/Features/ms_coco/resnet_%s_bgrms_large/test2015/COCO_test2015_'%feat
  	},
  	'test': {
  		'ques_file': VQA_PREFIX + '/Questions/OpenEnded_mscoco_test2015_questions.json',
  		'features_prefix': VQA_PREFIX + '/Features/ms_coco/resnet_%s_bgrms_large/test2015/COCO_test2015_'%feat
  	},
  	'genome': {
  		'genome_file': VQA_PREFIX + '/Questions/OpenEnded_genome_train_questions.json',
  		'features_prefix': VQA_PREFIX + '/Features/genome/feat_resnet-152/resnet_%s_bgrms_large/'%feat
  	}
  }
  