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InternLM-Math

InternLM-Math HOT

license

State-of-the-art bilingual open-sourced Math reasoning LLMs. A solver, prover, verifier, augmentor.

📑 Paper 💻 Github 🤗 Demo 🤗 Checkpoints OpenXLab ModelScope

News

  • [2024.10.22] We release InternLM2.5-Step-Prover policy and critic models with 14k proves found in Lean-Workbook. 🤗Dataset 🤗Policy-model 🤗Critic-model 📑 Paper
  • [2024.07.25] We release Lean-Github and InternLM2-Step-Prover with 29K theorems compiled from 100+ Lean 4 repos and a 7B models fine-tuned on Lean-Github and Lean-Workbook with SOTA performance on MiniF2F-test (54.5%), ProofNet (18.1%), and Putnam (5 problems). 🤗Dataset 🤗Model 📑 Paper 📖 README
  • [2024.06.06] We release Lean-Workbook with 57K math problems formalized in Lean 4 with 5K searched proof for autoformalization and auto theorem proving. 🤗Dataset 📑 Paper
  • [2024.05.24] We release updated version InternLM2-Math-Plus with 4 sizes and state-of-the-art performances including 1.8B, 7B, 20B, and 8x22B. We improve informal math reasoning performance (chain-of-thought and code-interpreter) and formal math reasoning performance (LEAN 4 translation and LEAN 4 theorem proving) significantly.
  • [2024.02.10] We add tech reports and citation references.
  • [2024.01.31] We add MiniF2F results with evaluation codes!
  • [2024.01.29] We add checkpoints from ModelScope. Update results about majority voting and Code Interpreter. Tech report is on the way!
  • [2024.01.26] We add checkpoints from OpenXLab, which ease Chinese users to download!

InternLM2-Math-Plus

Checkpoints

Model Model Type Transformers(HF) ModelScope Release Date
InternLM2-Math-Plus-1.8B Chat 🤗internlm/internlm2-math-plus-1_8b Shanghai_AI_Laboratory/internlm2-math-plus-1_8b 2024-05-27
InternLM2-Math-Plus-7B Chat 🤗internlm/internlm2-math-plus-7b Shanghai_AI_Laboratory/internlm2-math-plus-7b 2024-05-27
InternLM2-Math-Plus-20B Chat 🤗internlm/internlm2-math-plus-20b Shanghai_AI_Laboratory/internlm2-math-plus-20b 2024-05-27
InternLM2-Math-Plus-Mixtral8x22B Chat 🤗internlm/internlm2-math-plus-mixtral8x22b Shanghai_AI_Laboratory/internlm2-math-plus-mixtral8x22b 2024-05-27

Formal Math Reasoning

We evaluate the performance of InternLM2-Math-Plus on formal math reasoning benchmark MiniF2F-test. The evaluation setting is same as Llemma with LEAN 4.

This is how to reproduce our performance on MiniF2F.

Models MiniF2F-test
ReProver 26.5
LLMStep 27.9
GPT-F 36.6
HTPS 41.0
Llemma-7B 26.2
Llemma-34B 25.8
InternLM2-Math-7B-Base 30.3
InternLM2-Math-20B-Base 29.5
InternLM2-Math-Plus-1.8B 38.9
InternLM2-Math-Plus-7B 43.4
InternLM2-Math-Plus-20B 42.6
InternLM2-Math-Plus-Mixtral8x22B 37.3

Informal Math Reasoning

We evaluate the performance of InternLM2-Math-Plus on informal math reasoning benchmark MATH and GSM8K. InternLM2-Math-Plus-1.8B outperforms MiniCPM-2B in the smallest size setting. InternLM2-Math-Plus-7B outperforms Deepseek-Math-7B-RL which is the state-of-the-art math reasoning open source model. InternLM2-Math-Plus-Mixtral8x22B achieves 68.5 on MATH (with Python) and 91.8 on GSM8K.

For tool-calling inference and evaluation, please see the agent section.

Model MATH MATH-Python GSM8K
MiniCPM-2B 10.2 - 53.8
InternLM2-Math-Plus-1.8B 37.0 41.5 58.8
InternLM2-Math-7B 34.6 50.9 78.1
Deepseek-Math-7B-RL 51.7 58.8 88.2
InternLM2-Math-Plus-7B 53.0 59.7 85.8
InternLM2-Math-20B 37.7 54.3 82.6
InternLM2-Math-Plus-20B 53.8 61.8 87.7
Mixtral8x22B-Instruct-v0.1 41.8 - 78.6
Eurux-8x22B-NCA 49.0 - -
InternLM2-Math-Plus-Mixtral8x22B 58.1 68.5 91.8

We also evaluate models on MathBench-A. InternLM2-Math-Plus-Mixtral8x22B has comparable performance compared to Claude 3 Opus.

Model Arithmetic Primary Middle High College Average
GPT-4o-0513 77.7 87.7 76.3 59.0 54.0 70.9
Claude 3 Opus 85.7 85.0 58.0 42.7 43.7 63.0
Qwen-Max-0428 72.3 86.3 65.0 45.0 27.3 59.2
Qwen-1.5-110B 70.3 82.3 64.0 47.3 28.0 58.4
Deepseek-V2 82.7 89.3 59.0 39.3 29.3 59.9
Llama-3-70B-Instruct 70.3 86.0 53.0 38.7 34.7 56.5
InternLM2-Math-Plus-Mixtral8x22B 77.5 82.0 63.6 50.3 36.8 62.0
InternLM2-Math-20B 58.7 70.0 43.7 24.7 12.7 42.0
InternLM2-Math-Plus-20B 65.8 79.7 59.5 47.6 24.8 55.5
Llama3-8B-Instruct 54.7 71.0 25.0 19.0 14.0 36.7
InternLM2-Math-7B 53.7 67.0 41.3 18.3 8.0 37.7
Deepseek-Math-7B-RL 68.0 83.3 44.3 33.0 23.0 50.3
InternLM2-Math-Plus-7B 61.4 78.3 52.5 40.5 21.7 50.9
MiniCPM-2B 49.3 51.7 18.0 8.7 3.7 26.3
InternLM2-Math-Plus-1.8B 43.0 43.3 25.4 18.9 4.7 27.1

Introduction (For InternLM2-Math)

  • 7B and 20B Chinese and English Math LMs with better than ChatGPT performances. InternLM2-Math are continued pretrained from InternLM2-Base with ~100B high quality math-related tokens and SFT with ~2M bilingual math supervised data. We apply minhash and exact number match to decontaminate possible test set leakage.
  • Add Lean as a support language for math problem solving and math theorem proving. We are exploring combining Lean 3 with InternLM-Math for verifiable math reasoning. InternLM-Math can generate Lean codes for simple math reasoning tasks like GSM8K or provide possible proof tactics based on Lean states.
  • Also can be viewed as a reward model, which supports the Outcome/Process/Lean Reward Model. We supervise InternLM2-Math with various types of reward modeling data, to make InternLM2-Math can also verify chain-of-thought processes. We also add the ability to convert a chain-of-thought process into Lean 3 code.
  • A Math LM Augment Helper and Code Interpreter. InternLM2-Math can help augment math reasoning problems and solve them using the code interpreter which makes you generate synthesis data quicker!

math256 hungarian

Models

InternLM2-Math-Base-7B and InternLM2-Math-Base-20B are pretrained checkpoints. InternLM2-Math-7B and InternLM2-Math-20B are SFT checkpoints.

Model Model Type Transformers(HF) OpenXLab ModelScope Release Date
InternLM2-Math-Base-7B Base 🤗internlm/internlm2-math-base-7b Open in OpenXLab internlm2-math-base-7b 2024-01-23
InternLM2-Math-Base-20B Base 🤗internlm/internlm2-math-base-20b Open in OpenXLab internlm2-math-base-20b 2024-01-23
InternLM2-Math-7B Chat 🤗internlm/internlm2-math-7b Open in OpenXLab internlm2-math-7b 2024-01-23
InternLM2-Math-20B Chat 🤗internlm/internlm2-math-20b Open in OpenXLab internlm2-math-20b 2024-01-23

Performance

Pretrain Performance

We evaluate pretrain checkpoints based on greedy decoding with few-shot COT. Details of pretraining will be introduced in the tech report.

Benchmark GSM8K MAJ@1 GSM8K MAJ@100 MATH MAJ@1 MATH MAJ@256
Llama2-7B 14.6 - 2.5 -
Llemma-7B 36.4 54.0 18.0 33.5
InternLM2-Base-7B 36.5 - 8.6 -
InternLM2-Math-Base-7B 49.2 75.7 21.5 35.6
Minerva-8B 16.2 28.4 14.1 25.4
InternLM2-Base-20B 54.6 - 13.7 -
InternLM2-Math-Base-20B 63.7 84.8 27.3 46.2
Llemma-34B 51.5 69.3 25.0 43.1
Minerva-62B 52.4 68.5 27.6 43.4
Minerva-540B 58.8 78.5 33.6 50.3

We evaluate pretrain checkpoints using few-shot on MiniF2F. Please see eval/pretrain/minif2f for evaluation.

Benchmark MiniF2F-test
ReProver 26.5
LLMStep 27.9
Code-Llama-7B 26.2
Code-Llama-34B 25.8
Llemma-7B 26.2
Llemma-34B 25.8
InternLM2-Math-7B-Base 30.3
InternLM2-Math-20B-Base 29.5

SFT Peformance

All performance is based on greedy decoding with COT. We notice that the performance of Hungary has a big variance between our different checkpoints, while other performance is very stable. This may be due to the problem amount about Hungary.

Model Model Type GSM8K MATH Hungary
Qwen-7B-Chat Genearl 51.7 11.6 -
DeepSeek-7B-Chat General 63.0 15.8 28.5
InternLM2-Chat-7B General 70.7 23.0 -
ChatGLM3-6B General 53.8 20.4 32
MetaMath-Mistral-7B Mathematics 77.7 28.2 29
MetaMath-Llemma-7B Mathematics 69.2 30.0 -
InternLM2-Math-7B Mathematics 78.1 34.6 55
InternLM2-Chat-20B General 79.6 31.9 -
MetaMath-Llemma-34B Mathematics 75.8 34.8 -
InternLM2-Math-20B Mathematics 82.6 37.7 66
Qwen-72B General 78.9 35.2 52
DeepSeek-67B General 84.1 32.6 58
ChatGPT (GPT-3.5) General 80.8 34.1 41
GPT4 (First version) General 92.0 42.5 68

Code Intepreter Performance

All performance is based on interacting with Python.

Model GSM8K MATH
DeepSeek-Coder-Instruct-7B 62.8 28.6
DeepSeek-Coder-Instruct-1.5-7B 72.6 34.1
ToRA-7B 72.6 44.6
MathCODER-CL-7B 67.8 30.2
InternLM2-Chat-7B 77.9 45.1
InternLM2-Math-7B 79.4 50.9
ToRA-13B 75.8 48.1
MathCODER-CL-13B 74.1 35.9
InternLM2-Chat-20B 84.5 51.2
InternLM2-Math-20B 80.7 54.3
MathCODER-CL-34B 81.7 45.2
ToRA-70B 84.3 49.7
GPT-4 Code Interpreter * 97.0 69.7

Eval

You can effortlessly evaluate InternLM2-Math across a diverse array of mathematical datasets, such as Math and GSM8K, using OpenCompass with a single command. To get started, simply execute the following in your terminal after installing OpenCompass:

python run.py --models hf_internlm2_chat_math_7b --datasets gsm8k_gen math_gen_736506

Alternatively, for a streamlined experience, you can utilize a predefined configuration file. To do this, run the command below, making sure to adjust the arguments according to your requirements:

python run.py config/eval_internlm_math_chat.py

Inference

LMDeploy

We suggest using LMDeploy(>=0.2.1) for inference.

from lmdeploy import pipeline, TurbomindEngineConfig, ChatTemplateConfig

backend_config = TurbomindEngineConfig(model_name='internlm2-chat-7b', tp=1, cache_max_entry_count=0.3)
chat_template = ChatTemplateConfig(model_name='internlm2-chat-7b', system='', eosys='', meta_instruction='')
pipe = pipeline(model_path='internlm/internlm2-math-7b', chat_template_config=chat_template, backend_config=backend_config)

problem = '1+1='
result = pipe([problem], request_output_len=1024, top_k=1)

Huggingface

import torch
from transformers import AutoTokenizer, AutoModelForCausalLM
tokenizer = AutoTokenizer.from_pretrained("internlm/internlm2-math-7b", trust_remote_code=True)
# Set `torch_dtype=torch.float16` to load model in float16, otherwise it will be loaded as float32 and might cause OOM Error.
model = AutoModelForCausalLM.from_pretrained("internlm/internlm2-math-7b", trust_remote_code=True, torch_dtype=torch.float16).cuda()
model = model.eval()
response, history = model.chat(tokenizer, "1+1=", history=[], meta_instruction="")
print(response)

Special usages

We list some instructions used in our SFT. You can use them to help you. You can use the other ways to prompt the model, but the following are recommended. InternLM2-Math may combine the following abilities but it is not guaranteed.

Translate proof problem to Lean: nl2lean3

Using Lean 3 to solve GSM8K problem: gsm8k_lean

Generate problem based on Lean 3 code: lean_problem

Play 24 point game: 24

Augment a harder math problem: augment_hard

Description Query
Solving question via chain-of-thought {Question}
Solving question via Lean 3 {Question}\nSolve this via Lean 3
Outcome reward model Given a question and an answer, check is it correct?\nQuestion:{Question}\nAnswer:{COT}
Process reward model Given a question and an answer, check correctness of each step.\nQuestion:{Question}\nAnswer:{COT}
Reward model Given a question and two answers, which one is better? \nQuestion:{Question}\nAnswer 1:{COT}\nAnswer 2:{COT}
Convert chain-of-thought to Lean 3 Convert this answer into Lean3. Question:{Question}\nAnswer:{COT}
Convert Lean 3 to chain-of-thought Convert this lean 3 code into a natural language problem with answers:\n{LEAN Code}
Translate question and chain-of-thought answer to a proof statement Convert this question and answer into a proof format.\nQuestion:{Question}\nAnswer:{COT}
Translate proof problem to Lean 3 Convert this natural langauge statement into a Lean 3 theorem statement:{Theorem}
Translate Lean 3 to proof problem Convert this Lean 3 theorem statement into natural language:{STATEMENT}
Suggest a tactic based on Lean state Given the Lean 3 tactic state, suggest a next tactic:\n{LEAN State}
Rephrase Problem Describe this problem in another way. {Question}
Augment Problem Please augment a new problem based on: {Question}
Augment a harder Problem Increase the complexity of the problem: {Question}
Change specific numbers Change specific numbers: {Question}
Introduce fractions or percentages Introduce fractions or percentages: {Question}
Code Interpreter lagent
In-context Learning Question:{Question}\nAnswer:{COT}\n...Question:{Question}\nAnswer:{COT}

Fine-tune and others

Please refer to InternLM.

Known issues

Our model is still under development and will be upgraded. There are some possible issues of InternLM-Math. If you find performances of some abilities are not great, welcome to open an issue.

  • Jump the calculating step.
  • Perform badly at Chinese fill-in-the-bank problems and English choice problems due to SFT data composition.
  • Tend to generate Code Interpreter when facing Chinese problems due to SFT data composition.
  • The reward model mode can be better leveraged with assigned token probabilities.
  • Code switch due to SFT data composition.
  • Some abilities of Lean can only be adapted to GSM8K-like problems (e.g. Convert chain-of-thought to Lean 3), and performance related to Lean is not guaranteed.

Citation and Tech Report

@misc{ying2024internlmmath,
      title={InternLM-Math: Open Math Large Language Models Toward Verifiable Reasoning}, 
      author={Huaiyuan Ying and Shuo Zhang and Linyang Li and Zhejian Zhou and Yunfan Shao and Zhaoye Fei and Yichuan Ma and Jiawei Hong and Kuikun Liu and Ziyi Wang and Yudong Wang and Zijian Wu and Shuaibin Li and Fengzhe Zhou and Hongwei Liu and Songyang Zhang and Wenwei Zhang and Hang Yan and Xipeng Qiu and Jiayu Wang and Kai Chen and Dahua Lin},
      year={2024},
      eprint={2402.06332},
      archivePrefix={arXiv},
      primaryClass={cs.CL}
}
@misc{ying2024lean,
      title={Lean Workbook: A large-scale Lean problem set formalized from natural language math problems}, 
      author={Huaiyuan Ying and Zijian Wu and Yihan Geng and Jiayu Wang and Dahua Lin and Kai Chen},
      year={2024},
      eprint={2406.03847},
      archivePrefix={arXiv},
      primaryClass={cs.CL}
}
@misc{wu2024leangithubcompilinggithublean,
      title={LEAN-GitHub: Compiling GitHub LEAN repositories for a versatile LEAN prover}, 
      author={Zijian Wu and Jiayu Wang and Dahua Lin and Kai Chen},
      year={2024},
      eprint={2407.17227},
      archivePrefix={arXiv},
      primaryClass={cs.AI},
      url={https://arxiv.org/abs/2407.17227}, 
}
@misc{wu2024internlm25stepproveradvancingautomatedtheorem,
      title={InternLM2.5-StepProver: Advancing Automated Theorem Proving via Expert Iteration on Large-Scale LEAN Problems}, 
      author={Zijian Wu and Suozhi Huang and Zhejian Zhou and Huaiyuan Ying and Jiayu Wang and Dahua Lin and Kai Chen},
      year={2024},
      eprint={2410.15700},
      archivePrefix={arXiv},
      primaryClass={cs.AI},
      url={https://arxiv.org/abs/2410.15700}, 
}