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Achieving GPT-4o level performance in astronomy with a specialized 8B-parameter large language model.

Tijmen de Haan1, Yuan-Sen Ting2,3, Tirthankar Ghosal4

  • 1International Center for Quantum-field Measurement Systems for Studies of the Universe and Particles (QUP-WPI), High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan. tijmen.dehaan@gmail.com.

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Summary

AstroSage-Llama-3.1-8B, an AI for astronomy, excels in astrophysics and cosmology research. It outperforms larger models, offering advanced AI for scientific education and discovery.

Keywords:
AI assistantContinued pretrainingLarge-language modelSupervised fine-tuning

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Area of Science:

  • Astronomy
  • Astrophysics
  • Cosmology

Background:

  • General-purpose AI models often lack specialized knowledge for complex scientific domains.
  • The need for accessible, high-performance AI tools in astronomical research is growing.

Purpose of the Study:

  • To develop a domain-specialized AI assistant for astronomy, astrophysics, and cosmology.
  • To evaluate the performance of this specialized AI against existing benchmarks and larger models.

Main Methods:

  • Training AstroSage-Llama-3.1-8B on a comprehensive dataset of astronomy arXiv papers (2007-2024).
  • Incorporating millions of synthetic question-answer pairs and astronomical literature into the training data.
  • Evaluating performance on the AstroMLab-1 benchmark.

Main Results:

  • AstroSage-Llama-3.1-8B achieved an 80.9% score on the AstroMLab-1 benchmark.
  • Outperformed all other 8-billion parameter models, both proprietary and open-weight.
  • Demonstrated performance comparable to GPT-4o, a significantly larger model.

Conclusions:

  • Domain specialization in AI can yield superior performance compared to general-purpose models, even at smaller parameter counts.
  • AstroSage-Llama-3.1-8B offers advanced, freely accessible AI capabilities for astronomical research and education.
  • Focused AI training enhances proficiency in specialized scientific fields like astronomy.