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# Copyright 2024 Bytedance Ltd. and/or its affiliates
# Copyright 2023-2024 SGLang Team
# Copyright 2025 ModelBest Inc. and/or its affiliates
#
# 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.
"""
Preprocess the GSM8k dataset to parquet format
"""
import argparse
import os
import re
import datasets
from verl.utils.hdfs_io import copy, makedirs
def extract_solution(solution_str):
solution = re.search("#### (\\-?[0-9\\.\\,]+)", solution_str)
assert solution is not None
final_solution = solution.group(0)
final_solution = final_solution.split("#### ")[1].replace(",", "")
return final_solution
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("--local_dir", default="~/data/gsm8k")
parser.add_argument("--hdfs_dir", default=None)
args = parser.parse_args()
data_source = "openai/gsm8k"
dataset = datasets.load_dataset(data_source, "main")
train_dataset = dataset["train"]
test_dataset = dataset["test"]
instruction_following = "Let's think step by step and output the final answer after `####`."
# add a row to each data item that represents a unique id
def make_map_fn(split):
def process_fn(example, idx):
question_raw = example.pop("question")
question = question_raw + " " + instruction_following
answer_raw = example.pop("answer")
solution = extract_solution(answer_raw)
data = {
"data_source": data_source,
"prompt": [
{
"role": "system",
"content": ("You are a math expert. You are given a question and you need to solve it step by step. You should rethinking carefully if user point out your answer is wrong. Put your final answer in the format of `#### <answer>`."),
},
{
"role": "user",
"content": question,
},
],
"ability": "math",
"reward_model": {"style": "rule", "ground_truth": solution},
"extra_info": {
"split": split,
"index": idx,
"answer": answer_raw,
"question": question_raw,
"interaction_kwargs": {
"query": question,
"ground_truth": solution,
},
},
}
return data
return process_fn
train_dataset = train_dataset.map(function=make_map_fn("train"), with_indices=True)
test_dataset = test_dataset.map(function=make_map_fn("test"), with_indices=True)
local_dir = args.local_dir
hdfs_dir = args.hdfs_dir
train_dataset.to_parquet(os.path.join(local_dir, "train.parquet"))
test_dataset.to_parquet(os.path.join(local_dir, "test.parquet"))
if hdfs_dir is not None:
makedirs(hdfs_dir)
copy(src=local_dir, dst=hdfs_dir)
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