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"""
This script provides an example to wrap TencentPretrain for regression inference.
"""
import sys
import os
import torch
import argparse
import collections
import torch.nn as nn
tencentpretrain_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))
sys.path.append(tencentpretrain_dir)
from finetune.run_regression import Regression
from inference.run_classifier_infer import *
def main():
parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
infer_opts(parser)
tokenizer_opts(parser)
args = parser.parse_args()
# Load the hyperparameters from the config file.
args = load_hyperparam(args)
# Build tokenizer.
args.tokenizer = str2tokenizer[args.tokenizer](args)
# Build classification model and load parameters.
args.soft_targets, args.soft_alpha = False, False
model = Regression(args)
model = load_model(model, args.load_model_path)
# For simplicity, we use DataParallel wrapper to use multiple GPUs.
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
model = model.to(device)
if torch.cuda.device_count() > 1:
print("{} GPUs are available. Let's use them.".format(torch.cuda.device_count()))
model = torch.nn.DataParallel(model)
dataset = read_dataset(args, args.test_path)
src = torch.LongTensor([sample[0] for sample in dataset])
seg = torch.LongTensor([sample[1] for sample in dataset])
batch_size = args.batch_size
instances_num = src.size()[0]
print("The number of prediction instances: ", instances_num)
model.eval()
with open(args.prediction_path, mode="w", encoding="utf-8") as f:
f.write("label")
f.write("\n")
for i, (src_batch, seg_batch) in enumerate(batch_loader(batch_size, src, seg)):
src_batch = src_batch.to(device)
seg_batch = seg_batch.to(device)
with torch.no_grad():
_, logits = model(src_batch, None, seg_batch)
logits = logits.cpu().numpy().tolist()
for j in range(len(logits)):
f.write(str(logits[j][0]))
f.write("\n")
if __name__ == "__main__":
main()
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