ActionExp_v4.py

#Update: A template version
import os, sys
project_root = os.path.join(os.path.expanduser('~'), 'Dev/NetModules')
sys.path.append(project_root)
# compared to V3, this version uses regression and augmented more positives
import argparse
import torch.nn.utils.clip_grad
import torch
print('torch veriosn:\t {}'.format(torch.__version__))
import torch.optim as optim
from torch.autograd import Variable
from torch.utils.data import DataLoader
import torch.nn.functional as F

from SDN.PointerGRU2Heads_v8 import PointerNetwork
from Devs_ActionProp.datasets.THUMOS14.dataloader_c3dd_aug4_fast import cDataset
from PtUtils import cuda_model
from Losses import h_assign as h_match
from Losses import f_assign as f_match
from Losses.losses import EMD_L2, to_one_hot, ClsLocLoss2_OneClsRegression_v2
from PyUtils.AverageMeter import AverageMeter
from PyUtils import dir_utils, log_utils
import progressbar

def str2bool(v):
      return v.lower() in ('true', '1', 'y', 'yes')


parser = argparse.ArgumentParser(description="Pytorch implementation of Pointer-Net-LSTM-2Heads")
# Data
parser.add_argument('--batch_size', default=32, type=int, help='Batch size')
parser.add_argument('--seq_len', default=90, type=int, help='clip size')
parser.add_argument('--net_outputs', default=15, type=int, help='number of intervals for lstm outputs')

# Train
parser.add_argument('--start_epoch', default=0, type=int, help='Staring epoch')
parser.add_argument('--nof_epoch', default=100, type=int, help='Number of epochs')
parser.add_argument('--lr', type=float, default=0.0001, help='Learning rate')
parser.add_argument('--eval', '-e', default='y', type=str2bool, help='evaluate only')
# GPU
parser.add_argument("--gpu_id", default='0', type=str)
parser.add_argument('--multiGpu', '-m', action='store_true', help='positivity constraint')
# Network
parser.add_argument('--input_dim', type=int, default=500, help='Number of hidden units')
parser.add_argument('--embedding_dim', type=int, default=500, help='Number of embedding units')
parser.add_argument('--hidden_dim', type=int, default=512, help='Number of hidden units')
#Other-parameters
parser.add_argument('--hassign_thres', default=0.5, type=float, help='hassignment_threshold')
parser.add_argument('--alpha', default=1.0, type=float, help='trade off between classification and localization')
parser.add_argument('--dropout', default=0.5, type=float, help='dropout rate for training a network')
parser.add_argument('--hmatch', default=0, type=int, help='hungarian matching or fix matching')
parser.add_argument('--EMD', default=1, type=int, help='Using EMD loss or cls loss ')
parser.add_argument('--dataset', default='THUMOS', type=str, help='Specify a dataset')

parser.add_argument('--resume', '-r', default=None, type=str, help='resume from previous ')
parser.add_argument('--fileid', default=1, type=int, help='the ckpt file id')
parser.add_argument('--sufix', default='N', type=str, help='suffix')
# parser.add_argument('--resume', '-r', default='/home/zwei/Dev/NetModules/ckpts/SDN_mnist_EMD_hmatch-assgin0.75-alpha0.1000-dim512-dropout0.5000-seqlen100-ckpt', type=str, help='resume from previous ')

# script_specific:


loss_type={0: 'CLS', 1: 'EMD'}
match_type = {0: 'FIX', 1: 'HUG'}

def main():
    global args
    args = (parser.parse_args())
    use_cuda = cuda_model.ifUseCuda(args.gpu_id, args.multiGpu)
    script_name_stem = dir_utils.get_stem(__file__)
    if args.resume is None:

        save_directory = dir_utils.get_dir(os.path.join(project_root, 'ckpts', '{:s}'.format(args.dataset), '{:s}-{:s}-assgin{:.2f}-alpha{:.4f}-dim{:d}-dropout{:.4f}-seqlen{:d}-{:s}-{:s}'.
                                      format(script_name_stem, args.sufix, args.hassign_thres, args.alpha, args.hidden_dim, args.dropout, args.seq_len, loss_type[args.EMD], match_type[args.hmatch])))
    else:
        save_directory = args.resume

    log_file = os.path.join(save_directory, 'log-{:s}.txt'.format(dir_utils.get_date_str()))
    logger = log_utils.get_logger(log_file)
    log_utils.print_config(vars(args), logger)

    model = PointerNetwork(input_dim=args.input_dim, embedding_dim=args.embedding_dim,
                           hidden_dim=args.hidden_dim, max_decoding_len=args.net_outputs, dropout=args.dropout, n_enc_layers=2, output_classes=1)
    logger.info("Number of Params\t{:d}".format(sum([p.data.nelement() for p in model.parameters()])))
    logger.info('Saving logs to {:s}'.format(log_file))

    if args.resume is not None:

        ckpt_idx = args.fileid
        ckpt_filename = os.path.join(args.resume, 'checkpoint_{:04d}.pth.tar'.format(ckpt_idx))
        assert os.path.isfile(ckpt_filename), 'Error: no checkpoint directory found!'

        checkpoint = torch.load(ckpt_filename, map_location=lambda storage, loc: storage)
        model.load_state_dict(checkpoint['state_dict'], strict=False)
        train_iou = checkpoint['IoU']
        args.start_epoch = checkpoint['epoch']

        logger.info("=> loading checkpoint '{}', current iou: {:.04f}".format(ckpt_filename, train_iou))


    model = cuda_model.convertModel2Cuda(model, gpu_id=args.gpu_id, multiGpu=args.multiGpu)
    train_dataset = cDataset(dataset_split='train', seq_length=args.seq_len, sample_rate=[4], rdOffset=False, rdDrop=True)#Update: set offset to false to not remvoe the ones on the bound
    val_dataset =cDataset(dataset_split='val', seq_length=args.seq_len, sample_rate=[4], rdDrop=False, rdOffset=False)


    train_dataloader = DataLoader(train_dataset,
                                  batch_size=args.batch_size,
                                  shuffle=True,
                                  num_workers=4)
    val_dataloader = DataLoader(val_dataset,
                                  batch_size=args.batch_size,
                                  shuffle=False,
                                  num_workers=4)

    model_optim = optim.Adam(filter(lambda p:p.requires_grad,  model.parameters()), lr=float(args.lr))
    optim_scheduler = optim.lr_scheduler.ReduceLROnPlateau(model_optim, 'min', patience=10)

    # cls_weights = torch.FloatTensor([0.05, 1.0]).cuda()
    # cls_weights = None

    widgets = ['Test: ', ' -- [ ', progressbar.Counter(), '|', str(len(train_dataloader)), ' ] ',
               progressbar.Bar(), ' cls loss:  ', progressbar.FormatLabel(''),
               ' loc loss: ', progressbar.FormatLabel(''),
               ' IoU : ', progressbar.FormatLabel(''),
               ' (', progressbar.ETA(), ' ) ']

    # bar = progressbar.ProgressBar(max_value=step_per_epoch, widgets=widgets)
    # bar.start()

    for epoch in range(args.start_epoch, args.nof_epoch+args.start_epoch):

            total_losses = AverageMeter()
            loc_losses = AverageMeter()
            cls_losses = AverageMeter()
            matched_IOU = AverageMeter()
            true_IOU = AverageMeter()
            model.train()
            pbar = progressbar.ProgressBar(max_value=len(train_dataloader), widgets=widgets)
            pbar.start()
            for i_batch, sample_batch in enumerate(train_dataloader):
                # pbar.update(i_batch)

                feature_batch = Variable(sample_batch[0])
                start_indices = Variable(sample_batch[1])
                end_indices = Variable(sample_batch[2])
                gt_valids = Variable(sample_batch[3])
                gt_overlaps = Variable(sample_batch[4])

                # seq_labels = Variable(sample_batch[3])

                if use_cuda:
                    feature_batch = feature_batch.cuda()
                    start_indices = start_indices.cuda()
                    end_indices = end_indices.cuda()

                gt_positions = torch.stack([start_indices, end_indices], dim=-1)


                head_pointer_probs, head_positions, tail_pointer_probs, tail_positions, cls_scores, _ = model(feature_batch)

                pred_positions = torch.stack([head_positions, tail_positions], dim=-1)
                pred_scores = F.sigmoid(cls_scores)

                if args.hmatch:
                    #FIXME: do it later
                    sys.exit(-1)
                    # assigned_scores, assigned_locations, total_valid, total_iou = h_match.Assign_Batch_v2(gt_positions, pred_positions, gt_valids, thres=args.hassign_thres)
                else:
                    assigned_scores, assigned_locations, assigned_overlaps, total_valid, total_iou = f_match.Assign_Batch_v2_repression(gt_positions, pred_positions, gt_valids, gt_overlaps, thres=args.hassign_thres)
                true_valid, true_iou = h_match.totalMatch_Batch(gt_positions, pred_positions, gt_valids)
                assert true_valid == total_valid, 'WRONG'

                if total_valid>0:
                    matched_IOU.update(total_iou / total_valid, total_valid)
                    true_IOU.update(true_iou/total_valid, total_valid)

                assigned_scores = Variable(torch.LongTensor(assigned_scores),requires_grad=False)
                assigned_overlaps = Variable(torch.FloatTensor(assigned_overlaps), requires_grad=False)
                assigned_locations = Variable(torch.LongTensor(assigned_locations), requires_grad=False)
                if use_cuda:
                    assigned_scores = assigned_scores.cuda()
                    assigned_locations = assigned_locations.cuda()
                    assigned_overlaps = assigned_overlaps.cuda()

                pred_scores = pred_scores.contiguous().view(-1)
                assigned_scores = assigned_scores.contiguous().view(-1)
                assigned_overlaps = assigned_overlaps.contiguous().view(-1)
                cls_loss = ClsLocLoss2_OneClsRegression_v2(pred_scores, assigned_overlaps)
                # cls_scores = cls_scores.contiguous().view(-1, cls_scores.size()[-1])
                # assigned_scores = assigned_scores.contiguous().view(-1)

                # cls_loss = F.cross_entropy(cls_scores, assigned_scores, weight=cls_weights)

                if total_valid>0:
                    assigned_head_positions = assigned_locations[:,:,0]
                    assigned_head_positions = assigned_head_positions.contiguous().view(-1)
                    #
                    assigned_tail_positions = assigned_locations[:,:,1]
                    assigned_tail_positions = assigned_tail_positions.contiguous().view(-1)


                    head_pointer_probs = head_pointer_probs.contiguous().view(-1, head_pointer_probs.size()[-1])
                    tail_pointer_probs = tail_pointer_probs.contiguous().view(-1, tail_pointer_probs.size()[-1])

                    assigned_head_positions = torch.masked_select(assigned_head_positions, assigned_scores.byte())
                    assigned_tail_positions = torch.masked_select(assigned_tail_positions, assigned_scores.byte())

                    head_pointer_probs = torch.index_select(head_pointer_probs, dim=0, index=assigned_scores.nonzero().squeeze(1))
                    tail_pointer_probs = torch.index_select(tail_pointer_probs, dim=0, index=assigned_scores.nonzero().squeeze(1))

                    if args.EMD:
                        assigned_head_positions = to_one_hot(assigned_head_positions, args.seq_len)
                        assigned_tail_positions = to_one_hot(assigned_tail_positions, args.seq_len)

                        prediction_head_loss = EMD_L2(head_pointer_probs, assigned_head_positions, needSoftMax=True)
                        prediction_tail_loss = EMD_L2(tail_pointer_probs, assigned_tail_positions, needSoftMax=True)
                    else:
                        prediction_head_loss = F.cross_entropy(head_pointer_probs, assigned_head_positions)
                        prediction_tail_loss = F.cross_entropy(tail_pointer_probs, assigned_tail_positions)
                    loc_losses.update(prediction_head_loss.data.item() + prediction_tail_loss.data.item(),
                                      total_valid)#FIXME
                    total_loss =  args.alpha*(prediction_head_loss + prediction_tail_loss) + cls_loss
                else:
                    total_loss = cls_loss

                model_optim.zero_grad()
                total_loss.backward()
                torch.nn.utils.clip_grad_norm_(model.parameters(), 1.)
                model_optim.step()
                cls_losses.update(cls_loss.data.item(), feature_batch.size(0))
                total_losses.update(total_loss.item(), feature_batch.size(0))

                widgets[-8] = progressbar.FormatLabel('{:04.4f}'.format(cls_losses.avg))
                widgets[-6] = progressbar.FormatLabel('{:04.4f}'.format(loc_losses.avg))
                widgets[-4] = progressbar.FormatLabel('{:01.4f}'.format(matched_IOU.avg))
                pbar.update(i_batch)


            logger.info(
                "Train -- Epoch :{:06d}, LR: {:.6f},\tloss={:.4f}, \t c-loss:{:.4f}, \tloc-loss:{:.4f}\tAvg-matched_IOU:{:.4f}\t Avg-true-IOU:{:.4f}".format(
                    epoch,
                    model_optim.param_groups[0]['lr'], total_losses.avg, cls_losses.avg, loc_losses.avg, matched_IOU.avg, true_IOU.avg))
            train_iou = matched_IOU.avg
            optim_scheduler.step(total_losses.avg)

            model.eval()

            matched_IOU = AverageMeter()
            pbar = progressbar.ProgressBar(max_value=len(val_dataloader))
            for i_batch, sample_batch in enumerate(val_dataloader):
                pbar.update(i_batch)

                feature_batch = Variable(sample_batch[0])
                start_indices = Variable(sample_batch[1])
                end_indices = Variable(sample_batch[2])
                gt_valids = Variable(sample_batch[3])
                # valid_indices = Variable(sample_batch[3])

                if use_cuda:
                    feature_batch = feature_batch.cuda()
                    start_indices = start_indices.cuda()
                    end_indices = end_indices.cuda()

                gt_positions = torch.stack([start_indices, end_indices], dim=-1)

                head_pointer_probs, head_positions, tail_pointer_probs, tail_positions, cls_scores, _ = model(
                    feature_batch)

                pred_positions = torch.stack([head_positions, tail_positions], dim=-1)

                # assigned_scores, assigned_locations, total_valid, total_iou = h_match.Assign_Batch_eval(gt_positions, pred_positions, gt_valids, thres=args.hassign_thres) #FIXME
                matched_valid, matched_iou = h_match.totalMatch_Batch(gt_positions, pred_positions, gt_valids)
                if matched_valid>0:
                    matched_IOU.update(matched_iou / matched_valid, matched_valid)

            logger.info(
                "Val -- Epoch :{:06d}, LR: {:.6f},\tloc-Avg-matched_IOU:{:.4f}".format(
                    epoch,model_optim.param_groups[0]['lr'], matched_IOU.avg, ))


            if epoch % 1 == 0 :
                save_checkpoint({
            'epoch': epoch + 1,
            'state_dict': model.state_dict(),
            'loss':total_losses.avg,
            'cls_loss': cls_losses.avg,
            'loc_loss': loc_losses.avg,
            'train-IOU':train_iou,
            'IoU': matched_IOU.avg}, (epoch+1), file_direcotry=save_directory)



def save_checkpoint(state, epoch, file_direcotry):
    filename = 'checkpoint_{:04d}.pth.tar'
    file_direcotry = dir_utils.get_dir(file_direcotry)
    file_path = os.path.join(file_direcotry, filename.format(epoch))
    torch.save(state, file_path)



if __name__ == '__main__':
    main()