23 lines
731 B
Python
23 lines
731 B
Python
import json
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import random
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input_path = "arxiv-metadata-oai-snapshot-date-len.json"
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output_path = "arxiv-metadata-oai-snapshot--random.json"
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sample_size = 10000 # 你可以改成 10000 等其他数字
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# 先将所有数据加载到内存中（30万条可以接受）
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with open(input_path, 'r') as infile:
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data = [json.loads(line) for line in infile]
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print(f"原始数据量：{len(data)} 条")
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random.seed(42) #随机数种子，可以自己随便调
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# 随机抽样
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sampled_data = random.sample(data, sample_size)
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# 保存结果
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with open(output_path, 'w') as outfile:
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for record in sampled_data:
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outfile.write(json.dumps(record) + '\n')
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print(f"已随机抽取 {sample_size} 条数据保存到 {output_path}")
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