42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
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import sys
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from typing import List
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from torch.utils.data import Dataset
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import torch
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from transformers import PreTrainedTokenizer
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from ndata import readNsmcRawData, NsmcRawData
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def readNsmcDataAll():
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"""
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Returns: train, test
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"""
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print("read train set", file=sys.stderr)
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train = readNsmcRawData("nsmc/nsmc-master/ratings_train.txt",use_tqdm=True,total=150_000)
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print("read test set", file=sys.stderr)
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test = readNsmcRawData("nsmc/nsmc-master/ratings_test.txt",use_tqdm=True,total=50_000)
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return NsmcDataset(train),NsmcDataset(test)
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class NsmcDataset(Dataset):
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def __init__(self, data: List[NsmcRawData]):
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self.x = data
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def __len__(self):
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return len(self.x)
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def __getitem__(self, idx):
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return self.x[idx]
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def make_collate_fn(tokenzier: PreTrainedTokenizer):
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def collate_fn(batch: List[NsmcRawData]):
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labels = [s.label for s in batch]
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return tokenizer([s.document for s in batch], return_tensors='pt', padding='longest', truncation=True), torch.tensor(labels)
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return collate_fn
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if __name__ == "__main__":
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from transformers import BertTokenizer
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print("load bert tokenizer...")
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PRETAINED_MODEL_NAME = 'bert-base-multilingual-cased'
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tokenizer = BertTokenizer.from_pretrained(PRETAINED_MODEL_NAME)
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data = readNsmcRawData("nsmc/nsmc-master/ratings_train.txt",use_tqdm=True,total=150000)
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collate = make_collate_fn(tokenizer)
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print(collate(data[0:2]))
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