xl-zhao/PromptCoT-DS-1.5B

PromptCoT: Synthesizing Olympiad-Level Problems for Mathematical Reasoning in Large Language Models

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🚀 Overview

The PromptCoT-DS series models are distilled mathematical reasoning models trained using more challenging problem sets generated by the PromptCoT pipeline. These models are derived from DeepSeek-R1-Distill-Qwen and benefit from an enhanced training dataset designed to improve mathematical reasoning capabilities.

✔ PromptCoT-DS-1.5B → Distilled from DeepSeek-R1-Distill-Qwen-7B (1.5B parameters)
✔ PromptCoT-DS-7B → Distilled from DeepSeek-R1-Distill-Qwen-7B (7B parameters)

For more details, refer to our paper on ArXiv: 🔗 PromptCoT: Synthesizing Olympiad-Level Problems for Mathematical Reasoning in Large Language Models.

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🔥 Quick Start: Using the Model

1️⃣ Install Dependencies

pip install transformers vllm torch accelerate

2️⃣ Load the Model with Hugging Face Transformers

You can use PromptCoT-DS models to solve mathematical problems using Hugging Face’s generate API:

from transformers import AutoModelForCausalLM, AutoTokenizer

model_name = "xl-zhao/PromptCoT-DS-1.5B"
tokenizer = AutoTokenizer.from_pretrained(model_name)
model = AutoModelForCausalLM.from_pretrained(model_name).to("cuda")

problem_statement = (
    "A robe takes 2 bolts of blue fiber and half that much white fiber.  How many bolts in total does it take?"
)

prompt = (
    "<|begin▁of▁sentence|>Please reason step by step, and put your final answer within \\boxed{{}}."
    "<|User|>" + problem_statement + "<|Assistant|>"
)

inputs = tokenizer(prompt, return_tensors="pt").to("cuda")

with torch.no_grad():
    output = model.generate(**inputs, max_length=32768, temperature=0.6)

generated_solution = tokenizer.decode(output[0], skip_special_tokens=True)
print(generated_solution)

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⚡ Using vLLM for Fast Inference

For optimized inference, use vLLM:

from vllm import LLM, SamplingParams

model_name = "xl-zhao/PromptCoT-DS-1.5B"
llm = LLM(model=model_name, tensor_parallel_size=1)

problem_statement = (
    "A robe takes 2 bolts of blue fiber and half that much white fiber.  How many bolts in total does it take?"
)

prompt = (
    "<|begin▁of▁sentence|>Please reason step by step, and put your final answer within \\boxed{{}}."
    "<|User|>" + problem_statement + "<|Assistant|>"
)

sampling_params = SamplingParams(temperature=0.6, max_tokens=32768)
outputs = llm.generate([prompt], sampling_params)

print(outputs[0].outputs[0].text)

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🔗 Full Usage & Advanced Options

For advanced usage, including batch inference and evaluation on mathematical benchmarks, refer to the full repository on GitHub:
🔹 GitHub: PromptCoT

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📜 Citation

If you use PromptCoT, please consider citing:

@article{zhao2025promptcot,
  author    = {Zhao, Xueliang and Wu, Wei and Guan, Jian and Kong, Lingpeng},
  title     = {PromptCoT: Synthesizing Olympiad-Level Problems for Mathematical Reasoning in Large Language Models},
  year      = {2025},
  journal   = {arXiv preprint arXiv:2503.02324},
  url       = {http://arxiv.org/abs/2503.02324}
}