mirror of
https://github.com/deepinsight/insightface.git
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196 lines
9.3 KiB
Python
196 lines
9.3 KiB
Python
import argparse
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import logging
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import pprint
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import mxnet as mx
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from ..config import config, default, generate_config
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from ..symbol import *
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from ..core import callback, metric
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from ..core.loader import AnchorLoaderFPN
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from ..core.module import MutableModule
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from ..utils.load_data import load_gt_roidb, merge_roidb, filter_roidb
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from ..utils.load_model import load_param
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def train_rpn(network, dataset, image_set, root_path, dataset_path,
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frequent, kvstore, work_load_list, no_flip, no_shuffle, resume,
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ctx, pretrained, epoch, prefix, begin_epoch, end_epoch,
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train_shared, lr, lr_step):
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# set up logger
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logging.basicConfig()
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logger = logging.getLogger()
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logger.setLevel(logging.INFO)
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# setup config
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assert config.TRAIN.BATCH_IMAGES==1
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# load symbol
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sym = eval('get_' + network + '_rpn')()
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feat_sym = []
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for stride in config.RPN_FEAT_STRIDE:
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feat_sym.append(sym.get_internals()['rpn_cls_score_stride%s_output' % stride])
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# setup multi-gpu
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batch_size = len(ctx)
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input_batch_size = config.TRAIN.BATCH_IMAGES * batch_size
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# print config
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pprint.pprint(config)
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# load dataset and prepare imdb for training
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image_sets = [iset for iset in image_set.split('+')]
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roidbs = [load_gt_roidb(dataset, image_set, root_path, dataset_path,
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flip=not no_flip)
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for image_set in image_sets]
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roidb = merge_roidb(roidbs)
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roidb = filter_roidb(roidb)
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# load training data
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#train_data = AnchorLoaderFPN(feat_sym, roidb, batch_size=input_batch_size, shuffle=not no_shuffle,
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# ctx=ctx, work_load_list=work_load_list,
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# feat_stride=config.RPN_FEAT_STRIDE, anchor_scales=config.ANCHOR_SCALES,
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# anchor_ratios=config.ANCHOR_RATIOS, aspect_grouping=config.TRAIN.ASPECT_GROUPING,
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# allowed_border=9999)
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train_data = AnchorLoaderFPN(feat_sym, roidb, batch_size=input_batch_size, shuffle=not no_shuffle,
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ctx=ctx, work_load_list=work_load_list)
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# infer max shape
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max_data_shape = [('data', (input_batch_size, 3, max([v[0] for v in config.SCALES]), max([v[1] for v in config.SCALES])))]
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max_data_shape, max_label_shape = train_data.infer_shape(max_data_shape)
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print 'providing maximum shape', max_data_shape, max_label_shape
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# infer shape
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data_shape_dict = dict(train_data.provide_data + train_data.provide_label)
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arg_shape, out_shape, aux_shape = sym.infer_shape(**data_shape_dict)
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arg_shape_dict = dict(zip(sym.list_arguments(), arg_shape))
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out_shape_dict = zip(sym.list_outputs(), out_shape)
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aux_shape_dict = dict(zip(sym.list_auxiliary_states(), aux_shape))
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print 'output shape'
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pprint.pprint(out_shape_dict)
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# load and initialize params
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if resume:
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arg_params, aux_params = load_param(prefix, begin_epoch, convert=True)
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else:
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arg_params, aux_params = load_param(pretrained, epoch, convert=True)
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init = mx.init.Xavier(factor_type="in", rnd_type='gaussian', magnitude=2)
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init_internal = mx.init.Normal(sigma=0.01)
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for k in sym.list_arguments():
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if k in data_shape_dict:
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continue
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if k not in arg_params:
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print 'init', k
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arg_params[k] = mx.nd.zeros(shape=arg_shape_dict[k])
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if not k.endswith('bias'):
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init_internal(k, arg_params[k])
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for k in sym.list_auxiliary_states():
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if k not in aux_params:
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print 'init', k
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aux_params[k] = mx.nd.zeros(shape=aux_shape_dict[k])
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init(k, aux_params[k])
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# check parameter shapes
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for k in sym.list_arguments():
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if k in data_shape_dict:
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continue
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assert k in arg_params, k + ' not initialized'
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assert arg_params[k].shape == arg_shape_dict[k], \
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'shape inconsistent for ' + k + ' inferred ' + str(arg_shape_dict[k]) + ' provided ' + str(arg_params[k].shape)
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for k in sym.list_auxiliary_states():
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assert k in aux_params, k + ' not initialized'
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assert aux_params[k].shape == aux_shape_dict[k], \
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'shape inconsistent for ' + k + ' inferred ' + str(aux_shape_dict[k]) + ' provided ' + str(aux_params[k].shape)
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# create solver
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data_names = [k[0] for k in train_data.provide_data]
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label_names = [k[0] for k in train_data.provide_label]
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if train_shared:
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fixed_param_prefix = config.FIXED_PARAMS_SHARED
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else:
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fixed_param_prefix = config.FIXED_PARAMS
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mod = MutableModule(sym, data_names=data_names, label_names=label_names,
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logger=logger, context=ctx, work_load_list=work_load_list,
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max_data_shapes=max_data_shape, max_label_shapes=max_label_shape,
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fixed_param_prefix=fixed_param_prefix)
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# decide training params
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# metric
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eval_metric = metric.RPNAccMetric()
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cls_metric = metric.RPNLogLossMetric()
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bbox_metric = metric.RPNL1LossMetric()
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eval_metrics = mx.metric.CompositeEvalMetric()
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for child_metric in [eval_metric,cls_metric,bbox_metric]:
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eval_metrics.add(child_metric)
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# callback
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batch_end_callback = []
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batch_end_callback.append(mx.callback.Speedometer(train_data.batch_size, frequent=frequent))
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epoch_end_callback = mx.callback.do_checkpoint(prefix)
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# decide learning rate
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base_lr = lr
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lr_factor = 0.1
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lr_epoch = [int(epoch) for epoch in lr_step.split(',')]
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lr_epoch_diff = [epoch - begin_epoch for epoch in lr_epoch if epoch > begin_epoch]
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lr = base_lr * (lr_factor ** (len(lr_epoch) - len(lr_epoch_diff)))
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lr_iters = [int(epoch * len(roidb) / batch_size) for epoch in lr_epoch_diff]
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print 'lr', lr, 'lr_epoch_diff', lr_epoch_diff, 'lr_iters', lr_iters
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lr_scheduler = mx.lr_scheduler.MultiFactorScheduler(lr_iters, lr_factor)
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# optimizer
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optimizer_params = {'momentum': 0.9,
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'wd': 0.0001,
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'learning_rate': lr,
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'lr_scheduler': lr_scheduler,
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'rescale_grad': (1.0 / batch_size),
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'clip_gradient': 5}
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# train
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mod.fit(train_data, eval_metric=eval_metrics, epoch_end_callback=epoch_end_callback,
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batch_end_callback=batch_end_callback, kvstore=kvstore,
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optimizer='sgd', optimizer_params=optimizer_params,
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arg_params=arg_params, aux_params=aux_params, begin_epoch=begin_epoch, num_epoch=end_epoch)
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def parse_args():
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parser = argparse.ArgumentParser(description='Train a Region Proposal Network')
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# general
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parser.add_argument('--network', help='network name', default=default.network, type=str)
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parser.add_argument('--dataset', help='dataset name', default=default.dataset, type=str)
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args, rest = parser.parse_known_args()
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generate_config(args.network, args.dataset)
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parser.add_argument('--image_set', help='image_set name', default=default.image_set, type=str)
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parser.add_argument('--root_path', help='output data folder', default=default.root_path, type=str)
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parser.add_argument('--dataset_path', help='dataset path', default=default.dataset_path, type=str)
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# training
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parser.add_argument('--frequent', help='frequency of logging', default=default.frequent, type=int)
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parser.add_argument('--kvstore', help='the kv-store type', default=default.kvstore, type=str)
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parser.add_argument('--work_load_list', help='work load for different devices', default=None, type=list)
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parser.add_argument('--no_flip', help='disable flip images', action='store_true')
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parser.add_argument('--no_shuffle', help='disable random shuffle', action='store_true')
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parser.add_argument('--resume', help='continue training', action='store_true')
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# rpn
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parser.add_argument('--gpus', help='GPU device to train with', default='0', type=str)
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parser.add_argument('--pretrained', help='pretrained model prefix', default=default.pretrained, type=str)
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parser.add_argument('--pretrained_epoch', help='pretrained model epoch', default=default.pretrained_epoch, type=int)
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parser.add_argument('--prefix', help='new model prefix', default=default.rpn_prefix, type=str)
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parser.add_argument('--begin_epoch', help='begin epoch of training', default=0, type=int)
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parser.add_argument('--end_epoch', help='end epoch of training', default=default.rpn_epoch, type=int)
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parser.add_argument('--lr', help='base learning rate', default=default.rpn_lr, type=float)
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parser.add_argument('--lr_step', help='learning rate steps (in epoch)', default=default.rpn_lr_step, type=str)
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parser.add_argument('--train_shared', help='second round train shared params', action='store_true')
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args = parser.parse_args()
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return args
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def main():
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args = parse_args()
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print 'Called with argument:', args
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ctx = [mx.gpu(int(i)) for i in args.gpus.split(',')]
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train_rpn(args.network, args.dataset, args.image_set, args.root_path, args.dataset_path,
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args.frequent, args.kvstore, args.work_load_list, args.no_flip, args.no_shuffle, args.resume,
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ctx, args.pretrained, args.pretrained_epoch, args.prefix, args.begin_epoch, args.end_epoch,
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train_shared=args.train_shared, lr=args.lr, lr_step=args.lr_step)
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if __name__ == '__main__':
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main()
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