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README.md
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# AstroSage-Llama-3.1-8B
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---
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# AstroSage-Llama-3.1-8B
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<INSERT PAPER LINK HERE>
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AstroSage-Llama-3.1-8B is a domain-specialized natural-language AI assistant
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tailored for research in astronomy, astrophysics, and cosmology. Trained on the
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complete collection of astronomy-related arXiv papers from 2007-2024 along with
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millions of synthetically-generated question-answer pairs and other
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astronomical literature, AstroSage-Llama-3.1-8B demonstrates remarkable
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proficiency on a wide range of questions. AstroSage-Llama-3.1-8B scores 80.9%
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on the AstroMLab-1 benchmark, greatly outperforming all models---proprietary
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and open-weight---in the 8-billion parameter class, and performing on par with
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GPT-4o. This achievement demonstrates the potential of domain specialization in
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AI, suggesting that focused training can yield capabilities exceeding those of
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much larger, general-purpose models. AstroSage-Llama-3.1-8B is freely
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available, enabling widespread access to advanced AI capabilities for
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astronomical education and research.
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## Model Details
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- **Model Type**: Astronomy-specialized LLM
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- **Base Model**: Meta-Llama-3.1-8B
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- **Parameters**: 8 billion
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- **Training Focus**: Astronomy, Astrophysics, Cosmology, and Astronomical Instrumentation
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- **License**: Llama 3.1 Community License
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- **Development Process**:
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1. Continued Pre-training (CPT) on astronomical literature
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2. Supervised Fine-tuning (SFT) on QA pairs and instruction sets
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3. Model merging with Meta-Llama-3.1-8B-Instruct (75% CPT+SFT / 25% Meta-Instruct)
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## Performance
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- **AstroMLab-1 Benchmark**: 80.9% accuracy
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- Outperforms all 8B parameter models
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- Comparable to GPT-4o (80.4%)
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- ~1000x more cost-effective than proprietary models
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- 8 percentage-point improvement over base model
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- **General Capabilities**: Maintains strong performance on standard benchmarks
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- IF-EVAL: 41.4%
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- BBH: 52.9%
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- MATH: 8.4%
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- GPQA: 31.2%
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- MUSR: 38.9%
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- MMLU-PRO: 34.6%
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## Training Data
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- **Continued Pre-training**:
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- ~250,000 arXiv preprints (2007-2024) from astro-ph and gr-qc
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- Astronomy-related Wikipedia articles
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- Selected astronomy textbooks
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- Total: 3.3 billion tokens, 19.9 GB plaintext
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- **Supervised Fine-tuning**:
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- 8.8 million curated QA pairs
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- Filtered Infinity-Instruct-7M dataset
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- Paper summaries and metadata
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- Total: 2.0 billion tokens, 9.8 GB plaintext
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## Intended Use
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- Curiosity-driven question answering
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- Brainstorming new ideas
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- Astronomical research assistance
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- Educational support in astronomy
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- Literature review and summarization
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- Domain-specific question answering
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- Scientific explanation of concepts
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## Limitations
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- As with all LLMs, hallucinations are possible
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- Limited by 8B parameter size for complex reasoning
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- Paper metadata not perfectly memorized
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- Performance primarily validated on multiple-choice questions
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- Training data cutoff: January 2024
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- English-only capabilities
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## Ethical Considerations
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- Should not be used as sole source for critical research decisions
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- Output should be verified against primary sources
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- May reflect biases present in astronomical literature
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## Technical Specifications
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- Architecture: Based on Meta-Llama 3.1
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- Training Infrastructure: ORNL OLCF Frontier
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- Hosting: Hugging Face Hub (AstroMLab/AstroSage-8B)
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## Citation and Contact
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- Corresponding author: Tijmen de Haan <tijmen.dehaan at gmail dot com>
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- Please cite the AstroMLab 3 paper when using this model.
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