codingutf8 c facebook inc and its affiliates c huggingface inc team licensed under the apache license version 2 0 the license you may not use this file except in compliance with the license you may obtain a copy of the license at http www apache orglicenseslicense2 0 unless required by applicable law or agreed to in writing software distributed under the license is distributed on an as is basis without warranties or conditions of any kind either express or implied see the license for the specific language governing permissions and limitations under the license finetuning the library models for multimodal multiclass prediction on mmimdb dataset import argparse import glob import json import logging import os import random import numpy as np import torch from sklearn metrics import f1score from torch import nn from torch utils data import dataloader randomsampler sequentialsampler from torch utils data distributed import distributedsampler from tqdm import tqdm trange from utilsmmimdb import imageencoder jsonldataset collatefn getimagetransforms getmmimdblabels import transformers from transformers import weightsname adamw autoconfig automodel autotokenizer mmbtconfig mmbtforclassification getlinearschedulewithwarmup from transformers trainerutils import ismainprocess try from torch utils tensorboard import summarywriter except importerror from tensorboardx import summarywriter logger logging getloggername def setseedargs random seedargs seed np random seedargs seed torch manualseedargs seed if args ngpu 0 torch cuda manualseedallargs seed def trainargs traindataset model tokenizer criterion prepare optimizer and schedule linear warmup and decay multigpu training should be after apex fp16 initialization distributed training should be after apex fp16 initialization train save model checkpoint loop to handle mnli double evaluation matched mismatched note that distributedsampler samples randomly multigpu eval eval required parameters other parameters setup distant debugging if needed distant debugging see https code visualstudio comdocspythondebuggingattachtoalocalscript setup cuda gpu distributed training setup logging set the verbosity to info of the transformers logger on main process only set seed load pretrained model and tokenizer setup model training saving bestpractices if you use defaults names for the model you can reload it using frompretrained save a trained model configuration and tokenizer using savepretrained they can then be reloaded using frompretrained good practice save your training arguments together with the trained model load a trained model and vocabulary that you have finetuned evaluation coding utf 8 c facebook inc and its affiliates c huggingface inc team licensed under the apache license version 2 0 the license you may not use this file except in compliance with the license you may obtain a copy of the license at http www apache org licenses license 2 0 unless required by applicable law or agreed to in writing software distributed under the license is distributed on an as is basis without warranties or conditions of any kind either express or implied see the license for the specific language governing permissions and limitations under the license finetuning the library models for multimodal multiclass prediction on mm imdb dataset train the model prepare optimizer and schedule linear warmup and decay multi gpu training should be after apex fp16 initialization distributed training should be after apex fp16 initialization train added here for reproductibility model outputs are always tuple in transformers see doc mean to average on multi gpu parallel training update learning rate schedule only evaluate when single gpu otherwise metrics may not average well save model checkpoint take care of distributed parallel training loop to handle mnli double evaluation matched mis matched note that distributedsampler samples randomly multi gpu eval eval model outputs are always tuple in transformers see doc required parameters other parameters setup distant debugging if needed distant debugging see https code visualstudio com docs python debugging _attach to a local script setup cuda gpu distributed training initializes the distributed backend which will take care of sychronizing nodes gpus setup logging set the verbosity to info of the transformers logger on main process only set seed load pretrained model and tokenizer make sure only the first process in distributed training will download model vocab setup model make sure only the first process in distributed training will download model vocab training saving best practices if you use defaults names for the model you can reload it using from_pretrained save a trained model configuration and tokenizer using save_pretrained they can then be reloaded using from_pretrained take care of distributed parallel training good practice save your training arguments together with the trained model load a trained model and vocabulary that you have fine tuned evaluation
import argparse
import glob
import json
import logging
import os
import random

import numpy as np
import torch
from sklearn.metrics import f1_score
from torch import nn
from torch.utils.data import DataLoader, RandomSampler, SequentialSampler
from torch.utils.data.distributed import DistributedSampler
from tqdm import tqdm, trange
from utils_mmimdb import ImageEncoder, JsonlDataset, collate_fn, get_image_transforms, get_mmimdb_labels

import transformers
from transformers import (
    WEIGHTS_NAME,
    AdamW,
    AutoConfig,
    AutoModel,
    AutoTokenizer,
    MMBTConfig,
    MMBTForClassification,
    get_linear_schedule_with_warmup,
)
from transformers.trainer_utils import is_main_process


try:
    from torch.utils.tensorboard import SummaryWriter
except ImportError:
    from tensorboardX import SummaryWriter


logger = logging.getLogger(__name__)


def set_seed(args):
    random.seed(args.seed)
    np.random.seed(args.seed)
    torch.manual_seed(args.seed)
    if args.n_gpu > 0:
        torch.cuda.manual_seed_all(args.seed)


def train(args, train_dataset, model, tokenizer, criterion):
    
    if args.local_rank in [-1, 0]:
        tb_writer = SummaryWriter()

    args.train_batch_size = args.per_gpu_train_batch_size * max(1, args.n_gpu)
    train_sampler = RandomSampler(train_dataset) if args.local_rank == -1 else DistributedSampler(train_dataset)
    train_dataloader = DataLoader(
        train_dataset,
        sampler=train_sampler,
        batch_size=args.train_batch_size,
        collate_fn=collate_fn,
        num_workers=args.num_workers,
    )

    if args.max_steps > 0:
        t_total = args.max_steps
        args.num_train_epochs = args.max_steps // (len(train_dataloader) // args.gradient_accumulation_steps) + 1
    else:
        t_total = len(train_dataloader) // args.gradient_accumulation_steps * args.num_train_epochs

    
    no_decay = ["bias", "LayerNorm.weight"]
    optimizer_grouped_parameters = [
        {
            "params": [p for n, p in model.named_parameters() if not any(nd in n for nd in no_decay)],
            "weight_decay": args.weight_decay,
        },
        {"params": [p for n, p in model.named_parameters() if any(nd in n for nd in no_decay)], "weight_decay": 0.0},
    ]

    optimizer = AdamW(optimizer_grouped_parameters, lr=args.learning_rate, eps=args.adam_epsilon)
    scheduler = get_linear_schedule_with_warmup(
        optimizer, num_warmup_steps=args.warmup_steps, num_training_steps=t_total
    )
    if args.fp16:
        try:
            from apex import amp
        except ImportError:
            raise ImportError("Please install apex from https://www.github.com/nvidia/apex to use fp16 training.")
        model, optimizer = amp.initialize(model, optimizer, opt_level=args.fp16_opt_level)

    
    if args.n_gpu > 1:
        model = nn.DataParallel(model)

    
    if args.local_rank != -1:
        model = nn.parallel.DistributedDataParallel(
            model, device_ids=[args.local_rank], output_device=args.local_rank, find_unused_parameters=True
        )

    
    logger.info("***** Running training *****")
    logger.info("  Num examples = %d", len(train_dataset))
    logger.info("  Num Epochs = %d", args.num_train_epochs)
    logger.info("  Instantaneous batch size per GPU = %d", args.per_gpu_train_batch_size)
    logger.info(
        "  Total train batch size (w. parallel, distributed & accumulation) = %d",
        args.train_batch_size
        * args.gradient_accumulation_steps
        * (torch.distributed.get_world_size() if args.local_rank != -1 else 1),
    )
    logger.info("  Gradient Accumulation steps = %d", args.gradient_accumulation_steps)
    logger.info("  Total optimization steps = %d", t_total)

    global_step = 0
    tr_loss, logging_loss = 0.0, 0.0
    best_f1, n_no_improve = 0, 0
    model.zero_grad()
    train_iterator = trange(int(args.num_train_epochs), desc="Epoch", disable=args.local_rank not in [-1, 0])
    set_seed(args)  
    for _ in train_iterator:
        epoch_iterator = tqdm(train_dataloader, desc="Iteration", disable=args.local_rank not in [-1, 0])
        for step, batch in enumerate(epoch_iterator):
            model.train()
            batch = tuple(t.to(args.device) for t in batch)
            labels = batch[5]
            inputs = {
                "input_ids": batch[0],
                "input_modal": batch[2],
                "attention_mask": batch[1],
                "modal_start_tokens": batch[3],
                "modal_end_tokens": batch[4],
            }
            outputs = model(**inputs)
            logits = outputs[0]  
            loss = criterion(logits, labels)

            if args.n_gpu > 1:
                loss = loss.mean()  
            if args.gradient_accumulation_steps > 1:
                loss = loss / args.gradient_accumulation_steps

            if args.fp16:
                with amp.scale_loss(loss, optimizer) as scaled_loss:
                    scaled_loss.backward()
            else:
                loss.backward()

            tr_loss += loss.item()
            if (step + 1) % args.gradient_accumulation_steps == 0:
                if args.fp16:
                    nn.utils.clip_grad_norm_(amp.master_params(optimizer), args.max_grad_norm)
                else:
                    nn.utils.clip_grad_norm_(model.parameters(), args.max_grad_norm)

                optimizer.step()
                scheduler.step()  
                model.zero_grad()
                global_step += 1

                if args.local_rank in [-1, 0] and args.logging_steps > 0 and global_step % args.logging_steps == 0:
                    logs = {}
                    if (
                        args.local_rank == -1 and args.evaluate_during_training
                    ):  
                        results = evaluate(args, model, tokenizer, criterion)
                        for key, value in results.items():
                            eval_key = "eval_{}".format(key)
                            logs[eval_key] = value

                    loss_scalar = (tr_loss - logging_loss) / args.logging_steps
                    learning_rate_scalar = scheduler.get_lr()[0]
                    logs["learning_rate"] = learning_rate_scalar
                    logs["loss"] = loss_scalar
                    logging_loss = tr_loss

                    for key, value in logs.items():
                        tb_writer.add_scalar(key, value, global_step)
                    print(json.dumps({**logs, **{"step": global_step}}))

                if args.local_rank in [-1, 0] and args.save_steps > 0 and global_step % args.save_steps == 0:
                    
                    output_dir = os.path.join(args.output_dir, "checkpoint-{}".format(global_step))
                    if not os.path.exists(output_dir):
                        os.makedirs(output_dir)
                    model_to_save = (
                        model.module if hasattr(model, "module") else model
                    )  
                    torch.save(model_to_save.state_dict(), os.path.join(output_dir, WEIGHTS_NAME))
                    torch.save(args, os.path.join(output_dir, "training_args.bin"))
                    logger.info("Saving model checkpoint to %s", output_dir)

            if args.max_steps > 0 and global_step > args.max_steps:
                epoch_iterator.close()
                break
        if args.max_steps > 0 and global_step > args.max_steps:
            train_iterator.close()
            break

        if args.local_rank == -1:
            results = evaluate(args, model, tokenizer, criterion)
            if results["micro_f1"] > best_f1:
                best_f1 = results["micro_f1"]
                n_no_improve = 0
            else:
                n_no_improve += 1

            if n_no_improve > args.patience:
                train_iterator.close()
                break

    if args.local_rank in [-1, 0]:
        tb_writer.close()

    return global_step, tr_loss / global_step


def evaluate(args, model, tokenizer, criterion, prefix=""):
    
    eval_output_dir = args.output_dir
    eval_dataset = load_examples(args, tokenizer, evaluate=True)

    if not os.path.exists(eval_output_dir) and args.local_rank in [-1, 0]:
        os.makedirs(eval_output_dir)

    args.eval_batch_size = args.per_gpu_eval_batch_size * max(1, args.n_gpu)
    
    eval_sampler = SequentialSampler(eval_dataset)
    eval_dataloader = DataLoader(
        eval_dataset, sampler=eval_sampler, batch_size=args.eval_batch_size, collate_fn=collate_fn
    )

    
    if args.n_gpu > 1 and not isinstance(model, nn.DataParallel):
        model = nn.DataParallel(model)

    
    logger.info("***** Running evaluation {} *****".format(prefix))
    logger.info("  Num examples = %d", len(eval_dataset))
    logger.info("  Batch size = %d", args.eval_batch_size)
    eval_loss = 0.0
    nb_eval_steps = 0
    preds = None
    out_label_ids = None
    for batch in tqdm(eval_dataloader, desc="Evaluating"):
        model.eval()
        batch = tuple(t.to(args.device) for t in batch)

        with torch.no_grad():
            batch = tuple(t.to(args.device) for t in batch)
            labels = batch[5]
            inputs = {
                "input_ids": batch[0],
                "input_modal": batch[2],
                "attention_mask": batch[1],
                "modal_start_tokens": batch[3],
                "modal_end_tokens": batch[4],
            }
            outputs = model(**inputs)
            logits = outputs[0]  
            tmp_eval_loss = criterion(logits, labels)
            eval_loss += tmp_eval_loss.mean().item()
        nb_eval_steps += 1
        if preds is None:
            preds = torch.sigmoid(logits).detach().cpu().numpy() > 0.5
            out_label_ids = labels.detach().cpu().numpy()
        else:
            preds = np.append(preds, torch.sigmoid(logits).detach().cpu().numpy() > 0.5, axis=0)
            out_label_ids = np.append(out_label_ids, labels.detach().cpu().numpy(), axis=0)

    eval_loss = eval_loss / nb_eval_steps
    result = {
        "loss": eval_loss,
        "macro_f1": f1_score(out_label_ids, preds, average="macro"),
        "micro_f1": f1_score(out_label_ids, preds, average="micro"),
    }

    output_eval_file = os.path.join(eval_output_dir, prefix, "eval_results.txt")
    with open(output_eval_file, "w") as writer:
        logger.info("***** Eval results {} *****".format(prefix))
        for key in sorted(result.keys()):
            logger.info("  %s = %s", key, str(result[key]))
            writer.write("%s = %s\n" % (key, str(result[key])))

    return result


def load_examples(args, tokenizer, evaluate=False):
    path = os.path.join(args.data_dir, "dev.jsonl" if evaluate else "train.jsonl")
    transforms = get_image_transforms()
    labels = get_mmimdb_labels()
    dataset = JsonlDataset(path, tokenizer, transforms, labels, args.max_seq_length - args.num_image_embeds - 2)
    return dataset


def main():
    parser = argparse.ArgumentParser()

    
    parser.add_argument(
        "--data_dir",
        default=None,
        type=str,
        required=True,
        help="The input data dir. Should contain the .jsonl files for MMIMDB.",
    )
    parser.add_argument(
        "--model_name_or_path",
        default=None,
        type=str,
        required=True,
        help="Path to pretrained model or model identifier from huggingface.co/models",
    )
    parser.add_argument(
        "--output_dir",
        default=None,
        type=str,
        required=True,
        help="The output directory where the model predictions and checkpoints will be written.",
    )

    
    parser.add_argument(
        "--config_name", default="", type=str, help="Pretrained config name or path if not the same as model_name"
    )
    parser.add_argument(
        "--tokenizer_name",
        default="",
        type=str,
        help="Pretrained tokenizer name or path if not the same as model_name",
    )
    parser.add_argument(
        "--cache_dir",
        default=None,
        type=str,
        help="Where do you want to store the pre-trained models downloaded from huggingface.co",
    )
    parser.add_argument(
        "--max_seq_length",
        default=128,
        type=int,
        help=(
            "The maximum total input sequence length after tokenization. Sequences longer "
            "than this will be truncated, sequences shorter will be padded."
        ),
    )
    parser.add_argument(
        "--num_image_embeds", default=1, type=int, help="Number of Image Embeddings from the Image Encoder"
    )
    parser.add_argument("--do_train", action="store_true", help="Whether to run training.")
    parser.add_argument("--do_eval", action="store_true", help="Whether to run eval on the dev set.")
    parser.add_argument(
        "--evaluate_during_training", action="store_true", help="Rul evaluation during training at each logging step."
    )
    parser.add_argument(
        "--do_lower_case", action="store_true", help="Set this flag if you are using an uncased model."
    )

    parser.add_argument("--per_gpu_train_batch_size", default=8, type=int, help="Batch size per GPU/CPU for training.")
    parser.add_argument(
        "--per_gpu_eval_batch_size", default=8, type=int, help="Batch size per GPU/CPU for evaluation."
    )
    parser.add_argument(
        "--gradient_accumulation_steps",
        type=int,
        default=1,
        help="Number of updates steps to accumulate before performing a backward/update pass.",
    )
    parser.add_argument("--learning_rate", default=5e-5, type=float, help="The initial learning rate for Adam.")
    parser.add_argument("--weight_decay", default=0.0, type=float, help="Weight deay if we apply some.")
    parser.add_argument("--adam_epsilon", default=1e-8, type=float, help="Epsilon for Adam optimizer.")
    parser.add_argument("--max_grad_norm", default=1.0, type=float, help="Max gradient norm.")
    parser.add_argument(
        "--num_train_epochs", default=3.0, type=float, help="Total number of training epochs to perform."
    )
    parser.add_argument("--patience", default=5, type=int, help="Patience for Early Stopping.")
    parser.add_argument(
        "--max_steps",
        default=-1,
        type=int,
        help="If > 0: set total number of training steps to perform. Override num_train_epochs.",
    )
    parser.add_argument("--warmup_steps", default=0, type=int, help="Linear warmup over warmup_steps.")

    parser.add_argument("--logging_steps", type=int, default=50, help="Log every X updates steps.")
    parser.add_argument("--save_steps", type=int, default=50, help="Save checkpoint every X updates steps.")
    parser.add_argument(
        "--eval_all_checkpoints",
        action="store_true",
        help="Evaluate all checkpoints starting with the same prefix as model_name ending and ending with step number",
    )
    parser.add_argument("--no_cuda", action="store_true", help="Avoid using CUDA when available")
    parser.add_argument("--num_workers", type=int, default=8, help="number of worker threads for dataloading")
    parser.add_argument(
        "--overwrite_output_dir", action="store_true", help="Overwrite the content of the output directory"
    )
    parser.add_argument(
        "--overwrite_cache", action="store_true", help="Overwrite the cached training and evaluation sets"
    )
    parser.add_argument("--seed", type=int, default=42, help="random seed for initialization")

    parser.add_argument(
        "--fp16",
        action="store_true",
        help="Whether to use 16-bit (mixed) precision (through NVIDIA apex) instead of 32-bit",
    )
    parser.add_argument(
        "--fp16_opt_level",
        type=str,
        default="O1",
        help=(
            "For fp16: Apex AMP optimization level selected in ['O0', 'O1', 'O2', and 'O3']. "
            "See details at https://nvidia.github.io/apex/amp.html"
        ),
    )
    parser.add_argument("--local_rank", type=int, default=-1, help="For distributed training: local_rank")
    parser.add_argument("--server_ip", type=str, default="", help="For distant debugging.")
    parser.add_argument("--server_port", type=str, default="", help="For distant debugging.")
    args = parser.parse_args()

    if (
        os.path.exists(args.output_dir)
        and os.listdir(args.output_dir)
        and args.do_train
        and not args.overwrite_output_dir
    ):
        raise ValueError(
            "Output directory ({}) already exists and is not empty. Use --overwrite_output_dir to overcome.".format(
                args.output_dir
            )
        )

    
    if args.server_ip and args.server_port:
        
        import ptvsd

        print("Waiting for debugger attach")
        ptvsd.enable_attach(address=(args.server_ip, args.server_port), redirect_output=True)
        ptvsd.wait_for_attach()

    
    if args.local_rank == -1 or args.no_cuda:
        device = torch.device("cuda" if torch.cuda.is_available() and not args.no_cuda else "cpu")
        args.n_gpu = 0 if args.no_cuda else torch.cuda.device_count()
    else:  
        torch.cuda.set_device(args.local_rank)
        device = torch.device("cuda", args.local_rank)
        torch.distributed.init_process_group(backend="nccl")
        args.n_gpu = 1

    args.device = device

    
    logging.basicConfig(
        format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
        datefmt="%m/%d/%Y %H:%M:%S",
        level=logging.INFO if args.local_rank in [-1, 0] else logging.WARN,
    )
    logger.warning(
        "Process rank: %s, device: %s, n_gpu: %s, distributed training: %s, 16-bits training: %s",
        args.local_rank,
        device,
        args.n_gpu,
        bool(args.local_rank != -1),
        args.fp16,
    )
    
    if is_main_process(args.local_rank):
        transformers.utils.logging.set_verbosity_info()
        transformers.utils.logging.enable_default_handler()
        transformers.utils.logging.enable_explicit_format()
    
    set_seed(args)

    
    if args.local_rank not in [-1, 0]:
        torch.distributed.barrier()  

    
    labels = get_mmimdb_labels()
    num_labels = len(labels)
    transformer_config = AutoConfig.from_pretrained(args.config_name if args.config_name else args.model_name_or_path)
    tokenizer = AutoTokenizer.from_pretrained(
        args.tokenizer_name if args.tokenizer_name else args.model_name_or_path,
        do_lower_case=args.do_lower_case,
        cache_dir=args.cache_dir,
    )
    transformer = AutoModel.from_pretrained(
        args.model_name_or_path, config=transformer_config, cache_dir=args.cache_dir
    )
    img_encoder = ImageEncoder(args)
    config = MMBTConfig(transformer_config, num_labels=num_labels)
    model = MMBTForClassification(config, transformer, img_encoder)

    if args.local_rank == 0:
        torch.distributed.barrier()  

    model.to(args.device)

    logger.info("Training/evaluation parameters %s", args)

    
    if args.do_train:
        train_dataset = load_examples(args, tokenizer, evaluate=False)
        label_frequences = train_dataset.get_label_frequencies()
        label_frequences = [label_frequences[l] for l in labels]
        label_weights = (
            torch.tensor(label_frequences, device=args.device, dtype=torch.float) / len(train_dataset)
        ) ** -1
        criterion = nn.BCEWithLogitsLoss(pos_weight=label_weights)
        global_step, tr_loss = train(args, train_dataset, model, tokenizer, criterion)
        logger.info(" global_step = %s, average loss = %s", global_step, tr_loss)

    
    if args.do_train and (args.local_rank == -1 or torch.distributed.get_rank() == 0):
        logger.info("Saving model checkpoint to %s", args.output_dir)
        
        
        model_to_save = (
            model.module if hasattr(model, "module") else model
        )  
        torch.save(model_to_save.state_dict(), os.path.join(args.output_dir, WEIGHTS_NAME))
        tokenizer.save_pretrained(args.output_dir)

        
        torch.save(args, os.path.join(args.output_dir, "training_args.bin"))

        
        model = MMBTForClassification(config, transformer, img_encoder)
        model.load_state_dict(torch.load(os.path.join(args.output_dir, WEIGHTS_NAME)))
        tokenizer = AutoTokenizer.from_pretrained(args.output_dir)
        model.to(args.device)

    
    results = {}
    if args.do_eval and args.local_rank in [-1, 0]:
        checkpoints = [args.output_dir]
        if args.eval_all_checkpoints:
            checkpoints = [
                os.path.dirname(c) for c in sorted(glob.glob(args.output_dir + "/**/" + WEIGHTS_NAME, recursive=True))
            ]

        logger.info("Evaluate the following checkpoints: %s", checkpoints)
        for checkpoint in checkpoints:
            global_step = checkpoint.split("-")[-1] if len(checkpoints) > 1 else ""
            prefix = checkpoint.split("/")[-1] if checkpoint.find("checkpoint") != -1 else ""
            model = MMBTForClassification(config, transformer, img_encoder)
            model.load_state_dict(torch.load(checkpoint))
            model.to(args.device)
            result = evaluate(args, model, tokenizer, criterion, prefix=prefix)
            result = {k + "_{}".format(global_step): v for k, v in result.items()}
            results.update(result)

    return results


if __name__ == "__main__":
    main()